Electric Chain Hoists Models: EC4, ECT4 and ECC4 Trolleys (Mechanical Joining Type) models: EET6, EGTS5 ang EPTS Operating Instructions Booklet @ Thoroughly read this operating instructions booklet before oO operating the trolley and electric chain hoist. @ Carefully store this operating instructions booklet after reading it. This operating instructions booklet contains important information that will be necessary when inspecting and maintaining the trolley and electric chain hoist. @ The hoist operator must receive this operating instructions booklet ! @ The hoist operator must read this operating instructions booklet! Customer's notes:- Model Serial No. Date Purchased NB. ‘The above information will be required when purchasing spare parts and when making inquiries. Copy them from the name plate on the hoist and save them for future reference.PREFACE NITCHI products are made of the best selected materials, and processed through up-to-date streamlined production facilities by skilled NITCHI engineers under severe quality control Tested in are accordance with our own standards and a rigid final inspection before leaving the plant are carried out on the NITCHI products to assure absolute safety, dependable and satisfactory perfomance. WARRANTY NITGHI products are guaranteed to be free from any defects in materials or workmanship. If any part or parts proves defective within six months from the date of purchase, we will replace the part no-charge, f.0.b. Osaka, Japan, provided the part claimed defective is returned to our factory through authorized NITCHI Distributors and or Agents with transportation prepaid. However, we reserve the right to decline responsibility for. these which repairs are made or attempted by others or misused or carelessly operated or maintained. 0 SAFETY PROCEDURES In this operating instructions booklet, precautions are listed under two categories, "DANGER" and "WARNING". <> DANGER Situations in which improper use can lead to death or serious injuries. AX WARNING Situations that can cause property damage or light to intermediate injuries. Some situations listed as A\" WARNING " may lead to serious conditions. Precautions must be obeyed no matter which category they come under. (© Mark indicating a procedure that is prohibited. @Q Mark indicating a procedure that must be carried out by the operator. @ Mark specifying that the electric chain hoist must be grounded. oO @ Mark warning of the possibility of electrical shocks. % For future reference, store this operating instructions booklet where it can be easily obtained by the operator. 1. OVERALL HANDLING: <} DANGER The unit (electric chain hoist and trolley) must be operated only by people who fully understand the operating instructions booklets and the precautions on the waming name plates. People without the necessary qualifications must not operate the unit or carry out hook and sling connecting operations. Inspect the unit before operating it, and carry out periodical inspections.2. IMPORTANT!! The following warning and safety procedures are essential for avoiding possible bodily injury and property damage. 2.1 Basic Safety Procedures AX WARNING NEVER lift more than the rated load marked on the hoist. ————_" NEVER use the hoist to lift, support or transport people. ff] NEVER lift or transport loads over or near people. i Onways read the operation and safety instructions. 2.2 Safety Procedures Prior To Use: | AX WARNING ALWAYS the operator of the hoist must be a person who is completely familiar with all safety and operation procedures. ALWAYS check the hoist before use and confirm that the load chain is well ————} 9 lubricated - ALWAYS check the brake before use. ALWAYS chack the safety latches to see if they work properly. Broken and missing | oO safety latches must be replaced immediately. ALWAYS use genuine NITCHI parts and chains. NEVER modify the hoist. NEVER use modified or deformed hooks. NEVER use a hoist when malfunction, unusual performance, damage or extensive wear are found. NEVER abuse the over-hoisting/over-lowering limit switch mechanism by using it regularly. NEVER remove or obscure the warnings and nameplate on the hoist.Safety Procedures During Operation: 4X WARNING ALWAYS set the load properly in the hook. ALWAYS confirm that the safety latch has closed compietely. ALWAYS take up the slack of the load chain and sling carefully, and make the initial load liftott shock as small as possible. ALWAYS use a hoist within the “Duty rating” , ED % or time rating. ALWAYS avoid excessive inching and make sure that the hoist motor completely stops before reversing the operating direction. NEVER allow your attention to be diverted when operating the hoist and never © leave a suspended load unattended. NEVER operate the hoist unless the load is centered underneath it. NEVER use the hoist with twisted, kinked, damaged or worn chain and never attempt to lengthen tne load chain. NEVER use the toad chain as a sling and never apply the load to the tip of the —4) hook. NEVER use the load chain so that it comes in to contact with an edge. NEVER allow the chain or hook to be used as a ground for welding and never touch them with live welding electrodes. NEVER abuse the friction clutch by using it frequently. Improper use can severely damage the hoist and lead to serious injuries. NEVER pull on the pendant control cable. o Maintenance Safety Procedures: AX WARNING ALWAYS have a qualified service person inspect the hoist periodically. ALWAYS clean the hoist thoroughly and keep the load chain well lubricated. ALWAYS only allow the friction clutch to be adjusted at an authorized NITCHI Service Shop . NEVER attempt to extend, repair or weld the load chain. NEVER touch live electrical parts.3. CONDITIONS OF USE: The EC4 Series electric chain hoists and trolleys are designed for the vertically lifting, lowering and horizontal transportation of loads by operating the pendant push button switch, and must be used within the following conditions:- 1. Power source : As specified on name plate of the electric chain hoist, and motorized trolley. 2. Trolley beam : Trolley to be used only on the designated beams. 3. Temperature : -20~40°C 4, Humidity : Under 90% 5. Protection : |P54 (Do not use in rain or dusty environments.) 6. Enclosure status: Do not use in ambient conditions that contain steam or explosive gases. 7, Rating: ModelEC4 30 minutes Model ECT4 10/30 minutes ( Slow / Fast ) © Model ECC4 15 minutes Model EET6 30 minutes 8. Grade: Model EC4,EET6 = 1Am Model ECT4, ECC4 1Bm Loe SS STANDARD SPECIFICATIONS INSTALLATION .. Connecting the Chain bucket . Lubrication .... Circuit breakers .. Power source cable Adjusting the Trolley width . Number of Spacer washers Connecting the Hoist to the Motorized trolley . Connecting the Hoist to the Trolley Oo Setting the Trolley onto the beam Connecting the Power source cable Connecting the Quick coupling Inspection After Installation: INSPECTION & MAINTENANCE INSPECTION BEFORE USE ... MONTHLY AND ANNUAL INSPECTIONS INSPECTION POINTS Hook & Chain Inspection Care after Installation .. ADJUSTING THE BRAKE Adjusting the electromagnetic brake CIRCUIT DIAGRAM Warning . POWER SOURCE CABLE SPECIFICATIONS SPARE PARTS TABLE AND SPARE PARTS CODE TABLE ...STANDARD SPECIFICATIONS Hook Suspended Type Electric Chain Hoist 4 Ay, EC4 250kg * 500kg + it ECU4 tw - 2t Uiting speed] Motor ouput oad chan [Cable Length | Minimum | ~ Net ttom | ated} ut (enn wy ating Power [Pendant |Heedo0m| welght no. | toad | tm (nin) Nos.of | cource| xs | |! soe | corte | sonr | ootte We | ate | emi | im | mm | Geko) ‘Eca00e6 | 250k 30 a7 10.9 04 05 28 485, 38 a 60 1 8s 38. 30 28 7 osoaso| sooxe [22 a6 | 10. ores se] 2 +S 1 Vs 30 43 5 “ " 30, 2 BO 28 680 $8 Fao “ 60 56 49 iT 1 so be 66 1 28 670 2 woe ‘ 60 ww 7 or7t 5s Ss ‘30 . is 26 58 ye como] 2 | 22-1 20 | 39 2 22) 735 | 22 1 7 Ff wm | race) "9% Major Dimensions (nm) : lock 7 "e fen ‘woight (kg) A 8 Do e Fr eP *«O canoes | 250K8 o7 v37 149 20 660 198 e20060 | Soke 20s 208 ns sevowe] iw | 2a 167 ne zs 225 2s sewioo] 1 | 09 150 168 710 200 255 255, ecuanz00| 20 50 191 1e7 30 770) 240, 390 1. Values marked % will ifr in accordance wih the height of Ft. 2. The spealications Inthe above table are subject to change without notice,Electric Chain Hoist with Motorized Trolley ECE4 250kg + 500kg + it ECJES ttw + 2t Traversing 9663 | your | | Breadth | Minimum | - Cable Lenath tiem | Rated | Lit (evn) | pt | att tadlus tor | Power | Pendant No. | toad | (m) (riry | Beams | cure | source | 3S Sore | soe | ew) Bem | ty | cm | em 30) 30 eons | 2soea | 2 zo coen| soos | 22 23 30 20 a4 02 eter 3.0 7 © eesroroo) ew 60 ao) ae) 90 page-9 0 0 60 p80 7 lw 132 30 76 cea = se] es |S 30 30 107 a 60 oa 60 760 na Hook . Dien hom Hook Majo Dimensions (rm) No. | load (ka) A 8 oD — Fi H 1 K Lt M P wal} u fceanes] 25008 7 vs | 14a | 20 670 | 198 kcss0080 | 50086 as | 208 we | we ae | o- <3 280 | ¥240/ 24 | “2 | ae fap ve rcisoioo| ww | 29 153 | 119 Te 22s 2 eceaioo] tt | 09 136 | 168 70s | 200 205 | 255 ae eeu] a | so 77 | ver | 30 | 24] 24%) soo | 22] tL] ano | 1a 1, Values marked 3a differ in accordance wih the height of it. 2, The specications inthe above table are subject to change without notice, 3. The spectications inthe () are for electric trolleys with hall speed. 4. Please refer to the beam drawing on the right for dimensions b and b. 5, Please refer to page-1 forthe specifications ofthe hoist (ECA). bo:Electric Chain Hoist with Geared Trolley or Plain Trolley ECG4 250kg + 500kg - It ECJG4 tw + 2t Jereaain)irimum] Cable Length [strum ‘Common spectioaions ser of fs of Power Pendanthes! . No. | toad} (rm | Beams | curve:| source |S] ‘Major Dimensions (mm) ‘ poo} my | im) | | ord Fa Ta [ole [mn] i [x]e[m[ae[ea]u Jecoaones| 30 28 Jecreooes | *5°M# [60 es | ee s os 197) 149] 20 650) 195 S008 sio | 245} 24s ecrsooso 60 56 2a | o- 0 efor 105 | 208 01010 sy L224 wo | io | so LEE oto 167] 119 we) 62 1608) 5)" erwie| '™ [60 | 56 oo fee) [so 28 | sco veo) 68) 695| 200 ecPaor00| 60 56 2ss| ens eter 30. 28 20 | = [77 49 | 102 cea! 2 [ee Se] 785 181] 127| 20 | 28 262] 28 ) 8 PPE 240] 102 @ tom | rites | Hook Bock ‘Geared Wotey Plan wolley Now | load | woight ha) | Hand chain gees 4 T ‘Not woight| H ‘Net weight tomy [RRL S| (rem) ae cieigy | (om) | RE KGD cosas) 30 a7 a ecoaoas| | 80 83 a5 e028 30) 49 aa ecraooso| SOOM 60 200 we ” 55 10s a7 ese], 80 +80 +e $5 50 cranico) (| *S 60 6 55 oa 30 0 55 scouarool_"* oe 50. 67 59 vewe00 30 ve ns 80 7 ee at 50 = 198 nea us o 1a a 1, Values marked #wil afer in accordance withthe height of it 2. Tha specifcatons inthe above table are subject to change without novice. 23, Please refer to Une beam drawing on the right for mensions b and t. 4 Please fofer to page-t fr the specifications ofthe hoist (ECs). heedSuspended Type 2-Speed Electric Chain Hoist ECT4 250 kg + S00kg + It ECTU4 ttw + 2t vom | raze | un | trasreecinmay, | wowrcurr an [RAE Troaacrain]| Caio toran man) wa | Pane en rm | welt no. | toad | (ny [Fast [sow [fot [Sow | Ta, source] oes. |G ‘ori | brie | sorte | cor [Sone] eoHz| SoH eor ye Shs cm) [ced [cm] Ko) 30 28 a7 4 ecranes| as0ce | 22] 7 |103| 22 | 26 | 04 | 08 | 01 foro : 221 aes | ectaoose | 500! 30 86 [101 | 22 | 26 | o9| 1.1 6: 26 ‘820 at *¢ Teo ‘023 Jo28 5a 44 }ectsaor00 | tw 30 43] 61) 11] 13] 09] 10 30 | 10 2 50 28 eco | 2 60 56 8 2 soo) x L2}e8| erfafr| fia 1 28 Tome 2 o27 lose bra se s xveeo| a [22] 26] a5] 07 | 00] 11] 19 2 28 Tres | oo a ten | rats | vooketer | Ma Omer ny ‘ a. | toad | weigntrg) | 8 ° e fi P 0 eases esoke 07 187 148 20 660 195 sco] socks 24s 24s 78 exwoico] ww] 20 187 ne. zs 225 2s cro] 1 | 09 180 168 710 200 285 258 770 jeuwcem| 2 | so 181 27 20 240 290 1. Values marked #wil for in accordance withthe helght of Ii 2. The spectications in the above table are subject to change without notice.Supended type Single-Phase Electric Chain Hoist se xs a. ea ECC4 300 kg - 500 kg ECCJ4 ttw Litieg speed | Motor ouput veedchon [oobi erath Mian] yy emf Rated | uit (in) Co Ratiog Power [Pendant | M82 | weight No. | toad | -(m) (ray No.of | source | ms | "S % soe | eae : sora | She TeV iats |) | cm | cam | 0 ext} soca sa | 64 40s | 98 1 |eo040080] 600Ks | 3.0 32 38 o4 18 cT-63 60 26 520 38 yy exacrco} ew ve | 19 2 eso | ae Tat - - ‘on Aalor mensions (nm an | nee | Bo 498 aan (ko) A 8 o e A oe 0 coon | 200k 07 197 149 20 60 15 eovens0| soos ass | eas fesucies| ow | 23 167 ue 2 ns 2s 1. Values marked 3 wit cfr in accordance with the height of lt. 2. The specications in the above table are subject to change without natica. 5i ALLATION Connecting the Chain bucket <} DANGER @ Do not modify the chain bucket assembly. @ Always attach the chain bucket assembly before raising the hoist into position. e @ Connect the chain bucket assembly with the chain bucket pins. @ Feed the load chain into the chain bucket gradually and neatly from the end. @ The load chain may tangle and the hoist may not operate correctly when the load chain is placed into the chain bucket assembly in one bundle. @ The inside of the chain bucket assembly must be cleaned periodically when the hoist is used in an area where dust and foreign matter can enter the chain bucket assembly. Table 4 code | Dimension A Open the split pin as shown in the i) drawing. on 80 2 380 A Oe 09 480 Chain bucket application table: sable2 Fiype of chain tiny faold | Frames’ oa 25014 900g 500K | GTESXI Dr 02 03 Tw creaxe | ot | _oa 1 orzaxt O1 oe 0a 2 ope | or ve | 0Lubrication @ Lubricate the toad chain before use with machine oil or gear oil. @ When the gear section of the hoist is disassembled, always change the grease within the gear case. Use heavy duty (disulfide molybdenum) grease. @® When the gear box section of the Motorized trolley is disassembled,add an extra coat of heavy duty grease (disulfide molybdenum grease) to the gears. The gear box section normally does not need to be regularly lubricated. Paint the gear teeth section of the Gear wheel and Pinion with cup grease. Circuit. breakers @® Always install a circuit breaker. 2 The circuit breaker must be exclusively for the hoist and independent from other machinery. @® Select an adequate capacity circuit breaker from Table 3. Table ypocthoit | Ratediond | Litramotor fe) | Teaveraing ctor | Ctout breaker |. Sobas60H2 (Kn Capacity (A) 04 705 ‘Hele with 200Ke | 0.1/0.4/0.1808 3 ‘600K 087i. o2 motorized yew [29/087028/1.1 5 trolley it WAS a joe7i.1vosan. oa Hook 04705 260k — 2 suspension 0.10.4/0.13/05 hoist and ‘600k 087i 3 holst with vw foesosvozena; eared or ic WAS plein wolloy at J027/1.17033/1.3 | —_ 5 ‘300ke Single-phase | BOOK. 04 — 10 Yew “The values Inthe () are for 200 to 240 vot hoists.Power source cable @® With electric chain hoists that use the electrical cable power feeding method, always be sure to use the appropriate sized cabtyre cable {tough-rubber sheathed cable). @® Use a larger size cabtyre cable when the cable length is long, and when there is a possibility that the hoist and the motorized trolley will be operated together at the same time. @® Please refer to Table 12 for the specifications of long cabtyre cables. Adjusting the Trolley width Adjust the width between the trolley wheels as follows:- @ Remove the Hexagonal nuts, and remove the side-plate. @ Adjust the width by increasing or decreasing the number of inner ‘spacer washers. Refer to Tables 4 and 5 for the appropriate combination of inner and outer Spacer washers. @ Tighten the Hexagonal nuts for the Stay bolts. @ Confirm that the Top holder is positioned directly under the center of the trolley beam. Incorrect installation of the Adjusting Spacer washers Side-plate Siecle ‘Spacer whashersNumber of Spacer washers Quantity and location. ratio BEAM SIZE 250kg ~ It = at - wef wetem|alse|,elolalele« lo 12 eiufele{u{[—/-|[—-[— 2 | e«]of +) +fof—|— |—|— 4 wi) of:i!e2efo«/—-f—-|;-|/= 6 ~w|e|2)e!fe«{—[-|—[— wf wm] of 2; sfsaf—-f—-/-|[= 16 m{ef2{|e{s/—-{|—-|;—|/— we || #!7i[«f«!7[efof[ole 20 w]e] s{e6{/sf7{sf[al7 wl a) e/s{|o«{/sf7{sfs|7 2 we] s{|e[7|4|[e6]ej]2|e. 2 [10] +|7[7]+|e«]2i2|e 2 we [| 2} el|e|sfe|le,al|s wz [wi] sa|e[s*|2{s[salals 28 wfe2{|s{[s|e2|sfaf« ls 20 w | 1) o fol] +f«f«fal as zw [wo] 1f{of[o]s|«]«fa]a 0 wi{o{[s|]n|[o|s|s|s |e 32 w]-|[-{[-|—-l:]s|[« 2 7 fw) —|—-|—-|—-|2[e«l«l|e2 % wil—{—-|—|—[e]elfel]|e2 26 w}—[—-[-[-|+1][7 [74 28 wif—{[—-f-f—-[f:1l7f[el|e wo | wof—|—-;/-;/—-|:|7]a«|o «0 vw |—-[-|[—|]—]e][eleleoNumber of Spacer washers HE | In Tables 24 20 18 18 16 6 15 4 8 7 1 10 10 10 10 " 1" e GTS 0 10 rn @ a 10 a 1 1% PTS 10 10 " 2 "1 " 10 28 Ea 8 18 18 2 2 10 10 70 1 1 2 18 4 14 8 16 16 17 Eats 1 "1 12 3 13 14 5 16 16 7 ait a 20 D " 1 1 8 4 4 6 16 16 7 Dh | cal EPTS 1 1 ® 18 13 4 6 16 16 7 A 7 7 16 16 6 4 4 13 1 1" 10 10 Quantity and location. 86 6 70 73 74 a 100 106 110 118 18 120 125, 131 135) 137 143 149 150 5 155 160 169 170 1PE | mm 10 BEAM SIZE INP 7% 4 16 18 20 a 2 33 72 1“ 15 16 18 28 32 38 «0 22% 45 10Connecting the Hoist to the Motorized trolley Motorized trolley Electric chain hoist chain hoist to the ‘motorized trolley are corect. B. inser tne Top hook pin ‘2s shown inthe drawing, ‘and be sure to use the Conn ‘section of Peraant cape 2 Se seve ‘Ainge the Spit in ito the Top hook pin. B.Open he Spit pin as ‘A.Connect the electric tralley and motorizd chain hoist ‘connecting cable. B. Inger tho Plug (Plug housing) completely tt its locked. ‘©. Next secure the Gasket and Connector cover postive Plug housing Fastening scrow Receptacle housing ‘Connéctor cover gasket Connecting the Pendant cable: ‘Loosen the Fastening serows Wire hanger ‘and datach ono-side ofthe 8 ‘Wee hangor as showninthe {5 drawing ‘Insert ine Pendant cable wie, reassemble and firmly tighten the Fastening serens. correct hole. shown in the drawing. @ ® Connecting the Cables: ‘A.Contirm thatthe cables are connacted as shown inthe ‘rawng. B. Frm screw in the Tightening cap ® Connecting 1 tw and 2t ‘A. The shape ofthe Top holder pin is as shown in tho drawing 8. Inger the Top holder pin and set the Washer ono ©. Lightly tohten the Nut by hand and insort the Spit pin. "Connecting the Hoist to the Geared trolley (plain trolley) Geared troley (Plain toley) Connect the tratoy tothe lactic chain hoist as shown inthe drawing.and be sure that the trolley and eleatio chain holst are both facing the correct direction. Inger into the note “Top hook pin Ingo tho Split pin into tho foe ofthe Top hook pin ‘Open the Spit pin as shown, inthe drawing. The connecting method of a plain trolley is basically the same as the above.Setting the Trolley onto the beam @ The trolley must be installed onto the trolley beam only by qualified people with the S necessary knowledge. @ Inserting an assembled trolley from the end of the trolley beam: + Remove the Stoppers at the end of the trolley beam, and insert the trolley. + Replace and positively secure the stoppers. @ How to install the trolley when the assembled trolley can not be inserted from the end of the trolley beam: + Remove the Hexagonal nuts from the Stay bolts. + Dismount the Plain-side plate. + Set the Geared wheels on to the tread section of the trolley beam. + While holding the Geared wheels in position, insert the Plain-side plate so that the Plain wheels will be in position on the tread section of the trolley beam. + Firmly tighten the Hexagonal nuts of the Plain-side plate side of the Stay bolts. “Tha designs of the actual roeys fra cteran kom what are shown inthe photograpne ene crewing Pl side pate Stay bolt ‘Appearance of trolley correctly jear wheel on the tread installed on to trolley bear. ‘section of the trolley beam @® When the trolley beam is curved, install the trolley so that the geared wheels are on the outside of the curve. Motorized Trolley Geared Trolley f> 13,Connecting the Power source cable % @ The hoist must be efficiently grounded, @ and an independent circuit breaker of the appropriate capacity must be installed in the power source system. ® ‘The power source systems of hoists connected to trolleys are as follows:- @ Install a messenger wire ( 6 6 mm steel cable) parallel to the trolley beam. Hang the power source cable from the messenger wire with cable carriers, and be careful not to twist the power source cable. Tr i \Trotey beam ger") Way I Power source switch 4 oY @ Install cable carriers at every 1.5 meters length of the power source cable, @ The connections of the Power source cable must only be made at the Hoist, Terminal box and Power source switch. Do not use Power source cables that are lengthened with connections. @ The following power source feeding method can be used in place of the Messenger wire method. Please consult an electrician for the most appropriate method for your hoist: CABLE CARRIER METHOD, TROLLEY DUCT METHOD & TROLLEY WIRE METHOD 14Connecting the Quick coupling Disconnecting and Connecting the Quick coupling:- Disconnecting: Loosen the Tightening cap. Remove the Fastening screws from the Connector cover. Slide the Connector cover gasket and Connector cover out of the way. Disconnect the Plug (Plug housing). Pull the Plug (Plug housing) out while Pull the Plug (Plug housing) out while pressing the } section down. pressing the | section down. Inner lock type Outer lock type Connecting: @ The connecting procedures are the opposite of the disconnecting procedures. @ Insort the Plug (Plug housing) positively. ‘ While holding the cable and preventing it from rotating, screw in the Tightening cap. @ Screw in the Tightening cap by hand, and do not use any tools. Over-tightening will damage the Tightening cap, 15“Inspection After Installation: : as @ Check the following immediately after installation: Proceduras to be carried out before the power source switch is turned “ON”. @ The load chain must always be free from twists. When the hoist lifts on two or more falls of load chain, twist can arise from the bottom hook being accidentally turned over through the load chain. ® While the hoist is not under a load, lubricate the whole length of the load chain with machine oil, and be sure to give the contact points between the links extra coatings. Extra coating of machine cllat contact points Holst wah two fas of fad chain Procedures to be carried out after the power source switch is turned “ON”. @® The hoist is equipped with a negative phase protector. When the hoist does not function when the pendant push buttons are depressed, the negative phase protector is functioning, if this happens, interchange the position of two wires of power source cable. ® As shown in the lower drawing, a reverse connection can be corrected by interchanging two (wires “S" and “T*) of the three wires of the power source cable. Power source switch Power source switch = Power source cable connection Power source cable connection (a) {b) ‘When "Power source connection (a) " is a reverse connection, the reverse connection can be ‘corrected by interchanging wires “ S" and “T'" as shown in "Power source cable connection (b) ” 16INSPECTION & MAINTENANCE @When inspecting the hoist, turn the power source “OFF” and hang out a sign that distinctly indicates that it is under inspection. Oo Inspect the hoist while it is not under a load. Consult the authorized NITCHI dealer or distributor from where the hoist was purchased when repairs or replacement parts are required. Daily, monthly and annual inspections are essential for ensuring a long and safe lifetime of the hoist. €> All inspections and repairs must be carried out by competent responsible peopleauthorized by the person in charge of the hoist. Always check the following safety procedures when inspection and maintenance work are carried out on the hoist- INSPECTION BEFORE USE While the hoist is not under a load, confirm that the whole length of the load chain is well lubricated. When the load chain requires lubrication, be sure to give the contact points between the links extra coatings of machine oil. The load chain must not be deformed and elongated and it must be free of twists and kinks. Check especially carefully when the hoist lifts on two or more falls of load chain. The hooks must not be elongated and deformation must be within the limits indicated in Table 9. The safety latches must all be in good condition and moving smoothly. ‘The pendant push button switch must function properly and smoothly. While the hoist is not under a load, confirm that the limit switch and brake systems are functioning correctly. The trolley and/or crane must be free of faults that prevent smooth and safe operation. fi MONTHLY AND ANNUAL INSPECTIONS The components of the hoist will eventually wear from use, Tables 6 and 7 give inspection points that are essential for insuring a long and safe liftime of the hoist. MONTHLY INSPECTION Inspect the hoist once a month, and keep a record of all inspections and repairs on file. ANNUAL INSPECTION Check all sections of the hoist especially carefully once a year, and keep detailed records of the inspections and repairs on file. 17INSPECTION POIN EC4 SERIES HOISTS ebiee ——_- Section Check points Proper condition External view No crack or deformation. Abnormal sound Motor and other parts sound normal, Body Side-plates No wearing and deformation. Gears and bearings No wearing and crack. Well lubricated with grease. Load sheave No wearing and crack. Opening ‘Same as recorded dimension “A” of new hook. Holders: No crack and deformation. Hooks: Bottom swivel hook Rotates smoothly on a thrust ball bearing Rivets for holder No wear or deformation. —__|" Dimensions Rotor to the Table 10. Load chain Visual condition No rust, cracks, wear or deformation. Gear teeth ‘Sufficient grease. Lubricant Load chain Well lubricated with machine oil along the whole length, particularly at the contact points. | Limit switch Motor stops when handle is pushed up. Limit Test iting and lowering without a foad. mechanism Stop-holder _[ Botts anc nuts fimly tightened. No crack. Brake “Tho brake must function positively. When the rated Brake toad is lied, the amount of slippage of the brake must mechanism bbe within 1% of the distance the hoist can lift in 1 minute E') (Refer to the “Lifting speed”on Page-1.) Power source cable and | No breakage and damage of the rubber-covered cables. pendant control cable No disconnection. Push-button switch | Contact points functioning positively Electrical Switch box Limit switch, electromagnetic contactor functioning components correctly. Motor: No humming and over-heating. Insulation resistance Insulation resistance exceeds 2M N by DC S00V Megger, Bearings Properly and smoothly engaging with shafts. Chain collecting bucket inside of the chain bucket free of rust, dint, grease and thers I other foreign matter. Bolts, nuts, etc. All in good condition and securely in position. Name-plate (mark-plate) | Cloarly observable. 18INSPECTION POINT: TROLLEYS ( PLAIN / GEARED / MOTORIZED ) Table 7 ‘and snap-rings etc, Section ] Check points Proper condition Side-plates No bending, crack and other deformations. Bolts, nuts, cotter-pins No looseness, breakage and missing. All Trolleys Trolley wheels T” No excessive wear on tread and goar sections. Well lubricated and rotating smoothly. Bearings Property engaged with shafts and rotating smoothly. Capacity mark Distinctly observable. Handwheels ‘Correctly meshing with hand chain. No cracks, breakage or extensive wear. Geared Trolleys | Shaft area of handwheels | Well lubricated and rotating smoothly. Hand chain: No excessive elongation and deformation that can al prevent the smooth meshing with the hand chain. Reduction gear section | No flaw, crack and excessive wear. Woll lubricated. No backlash in the gears and bearings. Brake mechanism ‘Stops smoothly without coasting too long. Motorized Power source cable and | No breakage and damage of the rubber-covered cables Trolleys pendant control cable and no disconnection. Motor No humming and overheating insulation resistance: Insulation resistance exceeds 2M 9 by DC 500-volt Megger. TEST RUNNING AFTER PERIODIC INSPECTION Test points Check points Shades L Test running ‘Operate the hoist and confirm that itruns smoothly. Limit switch function First, test without a toad. Next, test with a load within rated capacity. Test running with a load within the rated capacity ‘Check for noise and vibration when hoisting and lowerir Check the amount of the brake slippage. Over-loading test Test run with a 125 % overload, raveal 19 ©Hook & Chain Inspection aes ee Repeated use over a long period of time will cause the hooks and load chain to wear or elongate, and corrosion and/or cracks may arise depending on the place and method of use, The hooks and load chain are vital components of the hoist that must be within the Permissible limits of the following tables. Hooks Measure dimension reference. The hook must be replaced immediately when one of the following limits are exceeded: @ When deformation is visually noticeable (elongation, twists, cracks, etc.) @ When the limits of Table 9 are exceeded and when dimension “H” has worn down more than 95%. @ When dimension “A” differs from the above recorded value of the new hook. of the new hook with a slide calipers, and write it down for future Table 9 “Top hook Bottom hook Rated ‘ea A H a K 3 Nowmat”| Normal | Limit, ‘Notmal |. iow: a 250K9 soo | 28 | a7 | asz | as | as | ze 500kg twit [ae | ar | 205 | 2 | a | a7 2 vo | a [ss | os | 5 | ons (eimensions fa ram) Load chain Measure the sections of the load chain that come into contact with the load sheave with a slide calipers. Replace the toad chain when the limits of Table 10 are exceeded. The whole load chain must be replaced even if one link is extensively worm or deformed. able 10 7 ated Type | Granda], Stands] Ut a load gd(mm) | Pl) | r0.inKs"(m) LD “250k eD) as cT-63 63 181 198 [| “ = wea | orz | m4 22 20 | Tainensons in mm)Care after Installation @ NEVER attempt to disassemble or readjust oe the Friction clutch (O.L.P.)! The Friction clutch will malfunction when it is incorrectly adjusted. Friction clutch (0.L.P.) ‘The hoist is equipped with a friction clutch mechanism, which will slip and cause the motor to run idle when the hoist is overloaded, The friction clutch is adjust before the hoist leaves the factory, and will normally not require further adjusting. Emergency stop device During an emergency, depress the mushroom shaped Emergency stop button (the topmost button on the pendant push button switch) to immediately stop the hoist and trolley. When depressed the Emergency stop button will automatically lock and cut off the electricity. After the emergency, the Emergency stop button can be reset to its normal position by 21JUSTING THE BRAKE @ The brake must be adjusted only at a NITCHI Service Shop or by a qualified person with the 0 appropriate knowledge. @ The power source must be turned off before ® the brake is adjusted. @ There must be no load on the hoist when ) adjusting the brake. @ Adjust the brake after lowering the hoist to the floor. © Aways test the electromagnetic brake system before operating the holst. When the hoist has been in service for a long time, the Brake linings (Brake wheel ) will eventually wear, and the braking torque will become unstable. Test the hoist by lifting the load a little and stopping. Repeat this operation 2 to 3 times. Adjust the brake system when the load slips down 5 to 10 cm during the test. Adjusting the electromagnetic brake ‘A. Remove the Switch cover The structure of the Electromagnetic brake is as shown in the drawings on the right. When clearance "A exceeds 5 mm ( over 8 mm for ECC4), adjust the Electromagnetic brake as follows so that clearance * A“ becomes 2.5 mm (4 mm for ECC4). @ Loosen the Nut with a spanner. @ Screw in the Adjusting screw with a @ hexagon wrench. NB. Screw the Adjusting screw in till the AC solenoid plunger touches the AC solenoid coil, and next loosen the Adjusting screw to obtain the necessary clearance. @ After adjusting clearance "A" to 2.5 mm (4mm for ECC4), tighten the nut. @ The permissible limits of use of the Brake linings are as shown in Table 11: Table 11 ‘Brake ining ‘Brake wo! sae 7 De07e Pecrigete 265 0971CIRCUIT DIAGRAM Warning Remove the P/N093 switch cover. Then connect the lead wire referring to f the COIL JOINT instructions correctly. a — The unused lead wires get broken ao sometimes when they are accidentally <=? > oa caught in the brake. Bind them together con sont eases) and make sure that they do not get caught in the brake. @ Be sure to turn off the power source before changing the lead wire. ©) EC4 250kg + 500kg + ttw + tt 2t Suspended Type 1-Speed electric chain hoist | ower, Sis fa a Soiee Sar Ee MC ver el 1 “al act tg a time! pet || Fa Le age i tH u be or] on 2% ts = lees 7 Bow oon is lag {Ce a3 i ower Sous. 099°.) odo Daron Voge — ACTER 2a RatedLous eso) 9] 3b ver Ta [ Liege) [04 08 [4 V2omme at | EMContsoor MU ou, EMCancor FICO TF Turloeet “Teen BS | Past Outen Swish 0882 is ‘i Swick Lssi 30L soe 380 F Fine TSF S16) % S| Oecomeeing Swick | T5116 PR | Negave Prose Protector | PR Im NAME TYPE 23ECE4 250kg - 500kg + ttw: it- 2t Motorized Trolley 1-Speed electric chain hoist y a ag Noo. 2 ECT4 250kg - 500kg- 1tw> t+ 2t Suspended Type 2-Speed electric chain hoist 24 Power Source ‘Oparaon VoRage Negative Phase Potato: ‘Gonnocing Ciena) ‘Connecing Cabla{Con NAME Power Sowos Te on NC: NG MCs TF 1s. PR vac Tegatvo Prato ProtectECTE4 250kg + 500kg « 1tw: it 2t Motorized Troley Type 2-Speed electric chain hoist vet 12m <76 3 a Power Source on “$9800 . pas atags Agios | a . YL arxat Rated Load (soe te| [= nt we Ti] — Lg vaya faastozr sas \ mmx 7° iw | titiag tetera “Tos oa] 11_|e)) ime [Traversing MotorgkW) 2 [oa We | Einconasie ro Wo [EN Sanat uo. tig Ents TCO We | EW ste 16 | Tansomar TEoat 28_| Auth Buton Swick | — cond is [uri Se iss 3. | Siena 0 = a fase TarSHT8aA en [Raul Pate Pisecter| PR aia ae He ECC4 300kg « 500kg + 1tw Suspended Type Single-phase electric chain hoist ver =e Boner f , wo. faloerle Jy, gore, wah Pratehu j ? saoe te i Bly L sof} fash ° st cache 4 ale J | € 5 J i ‘ 98 1 “ “| ‘| ‘Down UalaTsaTatztal a al] i Powersowce — AG1 | azoy [Speen Vokage AC om | 207 ver Rated Lond 2004 080 .B5inm’xa* 7 TW | citing Motor aa —S iG —Eitconas, UE ‘6, ——ESconacr uD. pce | — Tarde “Psoin | 2, BS_| Push Buton Sich cose one ts] Un Sach si . Los) | — Gardener | Syria) Soc | ‘Sarid aio 3s F Tuas Tesi eT soa Tyee 25POWER SOURCE CABLE SPECIFICATIONS Motorized trolleys are supplied with 1 M long power source cables and manually operated trolleys are supplied with 5 M long power source cables. Please select the appropriate sized cable from Table 12 when lengthening the power source cable. Table 1 Type of hoist | Rated load Jom — oable length 250ks. ' 1 ' H 1-Speea} pas pop Hoist with Bt ‘ ' ' ' Motorized 250Kg : : 1 : trolley BOOke + Nw : : ! : e 2-Speed) The 1.25mm* (standard) power source cable at can be used for lengths up to 50 meters. 250ke ' ' : ' Hook — /1-Speed| 600ke » Tw 1 ' 1 ' suspension Wt: at Hl ‘ ' ' hoist and 260ke ' : ‘ ' hoist with |2-Speed| 500ke « 1tw : ' ' : geared or Wt: 2t : t ' t plain trolley | Single- | a00Kg - Sooke 2.0rrim® ' 8.6mm?! Phase | 1tw (Standard)! ' : PARE PARTS CODE TABL @ Only use genuine NITCHI spare parts. S + When ordering spare parts, specify the model, capacity, serial number, code number, and the quantity. + 341 specify the height of length. + 3K2 Refer to page-9, 10 @ How to use the spare parts table Model ye Eo 4 Rated load —-{> 260K | S00kg | 1tw Code number —> DEC4001 26S é oz01S 2201s 0201S 22015, oz01s t dd - Buy Sumeiey eis 0201s 02015 L edhig - Guy Buoy zs oe 9 rmaen ene [Ui YNZZS009_ ~ §NZZs0z9° YNZZSO08 8NZZ9029 YNZZSO08 t ‘Suueeq wes 80S sz01s, 2015 ‘S201S 62015 S201s t 3dh.9 - Buy Buweiey ‘SOS. SNZZS003 YNZzZ9029 ‘YNZZSOOS 4NZz90z9_ 4NZZS009 t Suueed weg ‘vos: HNZZ2029 BNZZE0ES UNZze029_ YINZZBOES eNzze029 L Suyeeq ee 80s uNzzioes eRzz2029 wzzi029 whaz20e8 whzziG28 i Sayeea ea | 208 ‘Nzzv008 wnzzs008 wzzv008 ehaz75008 wnzzro08 1 aveeqea| 108 1seas00re 1ssec009a0 1szasoo7w vest Tippi is | tet naar eee near rare nara 1 ‘aig g | Bet BeBe] srcosvores | 222.4] arcoorore | urzosoonis | 242.4] srcooior | ssvoscoms | 1 | gqyQeouwaiesed | jo, 4pLo 403) Ea | srcooiome ncosionun 1rco0\ont avcostorni ecooioms | 1 2) | gai 1SreR0or TevesooraH avOBOor i moanawvewe | Sl OWE ft erst .eae| "SEI | x900, | MIELE [esr .cno]rei eos] ELLE ] (¥800, | MOELIElyorieoslacitensa, msi | Aauessesnouucna | sii | g motte) paises | xoutr | aur Faveite | rgicoss | OL” | xo fae] ngrieoso | seat paworreyeouser | ott BORE ro awa nar aes 1 per eantona rome | e0t [or Ineo oar neo wwoan eo" near 1 tudes ug | ~e01 coWwear Inco NoWoH oir ncouresn t tied dos uma | 201 ed Sore soivose so.onr soives0 z aiomnaueu | sor “ead un aR unRTOAD TDN UD HO wei haute wera asia [901 oan] (yoaresa —[aecirar] weaves qin] —_(oorvesn | @oows"] wooier [este] —@oowaaa Om wwdyeou de | 004 s60roH0 S6re50 2607080 t ‘sluea arm | eo 200030 eaves Boone eer eemve3 i ‘pea ews | 680 isov08d eaves eOre5 ‘ aad turessone [160 Suase0vass Ssseora20 35207030 Toei | eon’ stones | S60 ‘SOaP80r033 ‘$37807030 ‘837800030 381_| (epss880} sweurdwco woune3 780 ae0ve30 Ed wera Bano weore30 i rarcosoon | 380 mei [ es [moe [ef [ ae | emo [eee [wf me] 0s [2 Tom | com ey vmaurn “ yooa eioa oa ON ved7 & eB ii- #4 lajajala|sletals|sEGTS + EPTS [a Nes, ooo a(t oe ee [Panama cere) 250@ | 008 |. sone |) tw paras 1 | _Paanwnesi asemey | @ | a JaTs0orT arco TEN 2 | eee wheal aserbty |e | — ~seTeo0eT lLeTs0cersN eo _| sey bots 2 [2 sTs008 LsTé0O8=N 7A | Sty pee A a [4 SESOO7ASN lLoesoo7aenl 7a_|_ Ste pes 2 [2 =1GE600766N l.ceso07asnl | Fan sige eae vpe JBTEOOBTSN | ersooersn] | Geersie pte op J3TS008TSN iereoosrsnl 11 | Seecer washer ma [me neo LoTEONSN 12 | — Teo hacer vp aesoi2sN SEeOTERH| LaesOV28N 19 non sna Tbe Joeso7@ toes01e 22 | Pinon shot metal p= uee6022 Lses0se 23 | Hand wheat f= woTe023 Lsrs0es 2a | ~ Hane eran se Tp= voTe024 LsTs024 43 | Hare chan p= we a 21s | Ton pater pia po = cevsor8 | —— | verso1e a1] _Comentng sta ho — ceeveoe1 | ——_| tereoer 108 | ~ Reta cra-coee | a | a 51018 61020 32EET6 eat 33EET6 33neater Part Name Nos,used | 250km 500ke aw t at omar EI | Gearbox i ‘BEMGOOTU ‘eweooTu 2 | Gearsde ats 1 BETSOO2USN LETSOO2USN £3 | Paine sa 1 BETSOOGUSN Lersoosusn| 5 | Suppontormeortnge 1 ‘BETSOOS LETEOOS, E6__| Gearvbeel assentiy 2 ‘BETSOOSTEN LETEOOSTSN | €7 | Prin whe ascersbiy 2 ‘BETSOO7TN [LETSOO7TSN | 9 | Stay bots 2 ‘BETSOOSSN LeTsoo9eN E10A | Stay p65 2 ‘BETSOTOASN, £108 | Sty snes 4 BETEOTOBSN E15 _ | Phion gow 1 BETSOIS LETSO1S, E16 | Phen i BETEOIS LETSON6 E161 | Pirin coter 1 BETEOIG! 1ETSO16) E17 | Spacer washor we PWIEO LeTs01 18h E19 | Tophoier nin 1 — (GETSOI9 LETEOS, £20 _| Tephoter v BETEOeOTH jsereo2oTsN| LeTSo2OTH Geet | comesinare 1 —= ‘JEME0RY Ueme02) 4G | Bote tor E62 4 BETSOA6SN E62 _| smonnoer 1 ‘oeMa062 6d | Baoe pate 1 ‘DEMGOBSUSN 65 | swich over 1 BETSOBS E501 _| Wor 1 DEMGEOTE LEuGSOTE 502 | Banbearng 1 00az 6205z E504 | Retaining ing Cope o 50082 50082 E505 | Retenig ng - Cpe 1 51020 51025 E507_| Petiing ng -Cypo 4 51015 51026 E519 | Bat beetng 1 ‘00a. 2051LU E594 | Gasket ore i DEMESSE £596 _| Cacromagnetic cota 7 HMauie%4 E551_| Push ton itch 1 Florio card aibos shown nthe Grout diagram abe. E552 _| Power eoure cable 1 DEMB5S2 ESSS_| Trolley cao 7 DEMBEES TENSES E655 | Push tion cable sserbiy 1 ‘Spec fm ype posh eto sich 2d eng ohn parca cabin [EGEB | Conactng cabletoonen) 1 DEMBESESN LEMeB5ESN €559_ | Comecing cational) 1 DEMB5SESN LEMBES9SN {E669 _| Comecor cover gasket 7 DECASSS 607 | Coleck 2 ‘oA.we2i6 509 _| Const 2 Ka E611 | Gate ores 1 OENGET eNes11 34