OPERATING AND MAINTENANCE MANUAL MODEL mB CATALOG NO. 3413, 115V, 50/60 Hz 3414, 230V, 50/60 Hz 3411, 115V, 50/60 H2/275 HEAD 3412, 230V, 50/60 Hz/275 HEAD IM-116A February 1, 1971 DAMON/IEC DIVISION e 300 SECOND AVE:, NEEDHAM HTS, MASS. 02194, TEL; (17) 448-6700| 1 THE INTERNATIONAL MODEL MB CENTRIFUGEPage 1.0 Im16a, OPERATING AND MAINTENANCE MANUAL. MODEL MB INTRODUCTION The Model MB centrifuge provides the medical profession with a means of providing a substantial saving in time and labor. The results are accurate, only a micro quantity of blood is necessary and the inexpensive capillary tubes can be used once and discarded, thus eliminating the cleaning of expensive glassware, The machine is equipped for automatic operation. Turning the timer knob turns the machine on as it sets the running time. The centrifuge shuts off automatically and sounds a bell. The unit is finished in beige, baked enamel with contrasting control panel. The 118V 50/60 Hz Model is UL and CSA approved. INSTALLATION The centrifuge, as shipped from the factory, has been tested and is ready to use as received. It is equipped with a universal motor for use on 115 volt, 50/60 Hz or 230 volts, 50/60 Hz as indicated on the data plate on the bottom of the base. MAKE SURE THAT THE AVAILABLE ELECTRICAL SUPPLY IS OF THE VOLTAGE SHOWN ON THE CENTRIFUGE NAME PLATE. When in operation, the minimum speed and q's are as follows: a) 275 head 11,500 rpm, 13,000 9Page 2.0 IM1168, OPERATING INSTRUCTIONS a. 31 3.2 3.3 Placing a Head on the Unit If the machine is shipped without a head on the shaft, place @ No. 275 head on the shaft after removing the cover. Then tighten the head lock-nut with the spanner wrench No. 30881 attached to the beaded chain, Loading of the Head Place the sealed capillary tubes containing the blood samples in the numbered slots in the head with the sealed end of the tube at the periphery. If the tubes are sealed with clay or plasticene, use the rubber cushion, IEC Part No. 1505. It is necessary to line the inner side of the flange of the head with the rubber cushion, making a smooth butt joint with the ends. Position the joint so that it is not opposite @ groove in the head. (It will be necessary to cut off a short piece of excess material to obtain the correct length.) A thin layer of silicone grease on the outer side of the rubber will provide sufficient adhesion to hold it in place and will facilitate replacement. Occasional shifting of the rubber will be necessary as it will eventually become punctured. When loading the head, be sure that the tubes are touching the rubber cushion, and that the ends of the tubes do not protrude into the center recess in the head where the head lock-nut fits. Spin the head by hand and observe that the tubes are properly seated. Operation Replace the head cover and tighten the cover nut onto the head, finger-tight. Close and latch the centrifuge cover. Turn the timer switch on (clockwise) and then on past the desired running time, to about the 10 minute mark and return to desired setting, usually 4 to § minutes. When the timer switch returns to zero, a signal bell sounds and the head will coast to a stop. If faster stopping is desired press the spring-loaded brake switch and hold until the head has almost come to rest and then release. The head will reverse direction of rotation if the brake switch is held down after head stops.Page 3.0 m1 When the centrifuge stops, lift the centrifuge cover and unscrew the head cover. The capillary tubes may easily be removed by tilting them at the peripheral end. They should be removed promptly and placed in a vertical position, If the head cover sticks, loosen the nut with the spanner wrench, IEC Part No. 30881, furnished with the machine. Keep the interior of the head free from abrasive material such as broken glass particles and spilled blood to avoid excessive vibration. Be careful of possible corrosion. GUARANTEE International centrifuges and accessories are guaranteed against defective materials and workmanship for a period of one year from the date of their receipt, provided that the equipment is used according to International Equipment Company recommendations, ‘The basic recommendations are as follows: 4a 42 Maintenance requirements as indicated in Section 6 of this manual must be carried out. The centrifuge owner should not use IEC centrifuge accessories on centrifuges manu: factured by others and IEC does not recommend the use of another manufacturers’ accessories on their centrifuges, Such use of the products would naturally nullify the IEC guarantee and absolve IEC from normal manufacturer's product liability. OPERATION OF READERS 54 Illuminated Micto-Capillary Tube Reader, Model CR, No. 2202 ‘The following method is used to operate the Model CR reader, Swing the magnifier up and out of the way. a) Loosen the lock-nut on the right end of the scale and move the scale to the top of the arc and lock in place. This will give room to load the capillary tube. b) Move the Lucite tube holder to the 100 position on the scale, (Always move the tube holder slide by grasping the two black-rubber grips.) ©) Place the capillary tube in the V-slot of the Lucite holder with the sealed end down, and in contact with the stop on the holder.Page 4.0 me1i6a, 5.2 d) Then loosen the lock-nut on the seale and move the scale down as far as it will go and lock in place. e} Drop the magnifier down into a reading position, ) Turn the knurled adjustment screw located at the bottom of the holder until the bottom edge of the red cells lies directly under the edge of the scale. 4} Again loosen the lock-nut on the scale, Move the scale end tube holder simu taneously until the left edge of the plasma meniscus meets the 100 mark on the scale. Lock the scale in place. h) Move the tube holder to the left until the left edge of the red blood-cell meniscus meets the edge of the scale. i) Read the hematocrit at this point in percentage directly from the scale, Circular Micro-Capillary Tube Reader, No. 2201 ‘The following method is used to operate the circular reader. a) Place the contrifuged capillary tube in the groove of the plastic indicator so that the bottom of the column of red cells coincides with the black fine near ‘the center on the plastic indicator. b}_ Rotate the bottom plate so that the 100 per cent line is directly beneath the red line on the plastic indicator; then hold the bottom plate in this position. Now, using the finger-hole, rotate the top plate so that the spiral line intersects ‘the capillary tube at the plasma-air interface. c} Rotate both discs together until the spiral line intersects the capillary tube at the red-cell white-cell interface. d) The hematocrit is read in percentage from the point on the scale directly be- neath the red line on the plastic indicator. NOTE: The design of the plastic Indicator is such that when the eye of the person reading is in the correct location, the spiral line appeers continuous as it passes beneath the plastic indicator. Should the spiral line appear broken, then the reader should re- adjust his position until the line appears continuous.@) Page 5.0 IM1164, MAINTENANCE OF MODEL MB 61 62 63 64 Lubrication No lubrication is necessary as the motor is equipped with lubricated sealed bearings. Brushes The brushes, IEC Part No. 43653, should be examined every 2 months under normal conditions. Remove the three screws from the underside of the base plate, unscrew the motor brush caps and remove the brushes. Replace them if they are worn-to less. than 5/16-inch, Removing the Head To remove the centrifuge head, unscrew the head cover and, using the spanner wrench supplied with the machine, loosen and remave the head lock nut. The head may then be removed from the motor shaft, Latch Adjustment A nylon adjustment screw has been incorporated into the latch to compensate for gasket compression. Periodically, this screw should be checked and adjusted to maintain a snug fit of the latch to prevent air leakage around the gasket. In order to adjust: a) Raise the cover. b) Remove the set screw from the bottom of the latch. ¢} Tighten adjusting screw a slight amount and check adjustment. NOTE: When properly adjusted, the cover when closed will compress the gasket slightly Also, the latch will be snug when locked. d) Reinstall the set screw. If latch is snug but a gap still exists between the gasket and the caver when closed, the gasket must be replacedPage 7.0, IM1164, BOLOW ViI0e1OW S3NOP HIM 3W_7300W S1LWW3HOS sen Roesne abd Gay Srae woLon owsrow aN 2 24 u :S f ‘heel me SOF prer iy t woswos > —G5qr; 4 we 3 z was aaa TZEOITS] . ZIDENdIpey ee4) 5) 7) 8) (9) (10) (uty (12) ( { 16 { ‘ (4) (15) (6) a7 (1g) (19) (20) (21) (22) (23) (2a) (25) (26) (27) (28) (29) Description Vent Screen Acorn Nut, 4+ 20-NC- 2(2) Headless Slotted Screw, Cone Pt. Y%4 - 20- NC 2x 7/8 inch (2) Butt Splice, API #34070 Cover Knob Friction Washer Lock Nut Drive Stud (2) Head Cushion Gasket Faston Terminal, API #41274 Brake Resistor Assembly Jumper Wire Wire Head Assembly Faston Connector, API #41450 Wire Load Assembly Stud Hex Nut Metal Cap, ESNA #22 K2.02 Hex Nut, #10-32 NF-2 (3) Lock Washer, Shakeproof #10 (2) Wire Lead Assembly Insulation Bushing Screen Face Spanner Wrench Bead Chain Coupling, Bead #10 AD, Type A (2) Truss Head Slotted Screw, #10-32-NF-2 x 1%" long (3) Cord Set, 115 volt Cord Set, 230 volt IEC Part No. 30900 50 50 50 7913 30897 30894 7984 278 1505 1511 50 41313 42413 42287 50 43763 30898 50 50 50 43764 9660 30889 30881 30901 50 38805 38806Page 8.0 IM-116A 7 PARTS LIST on i) (3) (4) (9) (6) 7 (a) (9) (10) (14) (12) (14) (15) (16) an (18) a9) (20) (21) (22) (23) (24) (25) (26) (27) (28) (29) Description Vent Seren Acorn Nut, %- 20. NC-2(2) Headless Slotted Screw, Cone Pt. 4 -20-NC 2x 7/8 inch (2) Butt Splice, API #34070 Cover Knob Friction Washer Lock Nut Drive Stud (2) Head Cushion Gasket Faston Terminal, API #41274 Brake Resistor Assembly Jumper Wire Wire Head Assembly Faston Connector, API #41450 Wire Load Assembly Stud Hex Nut Metal Cap, ESNA #22 K2-02 Hex Nut, #10-32 NF-2 (3) Lock Washer, Shakeproof #10 (2) Wire Lead Assembly Insulation Bushing Screen Face Spanner Wrench Bead Chain Coupling, Bead #10 AD, Type A (2) Truss Head Slotted Screw, #10-32-NF-2 x 4%" Long (3) Cord Set, 115 volt Cord Set, 230 volt IEC Part No. 30900 50 50 50 7913, 30897 30894 7954 278 1505 1511 50 41313 42413 42287 50 43763 30898 50 50 50 43764 9860 30889 30881 30901 50 38805 38806 vePage 10.0 IM11BA, Unit (30) (31) (32) (33) (39) (42) (43) (44) (45) (46) (48) (49 (50) (52) (53) (54) (55) (87) (59) (60) (61) (62) (63) (64) (65) (67) (68) (69) (71) (72) (7a) (75) Description Washer, 130" 1D x 1" OD x 3/64” thick (4) Washer, .130" 1D x %" OD x 3/64" thick (4) Pop Rivet, SD 48 BS (4) Bead Chain, 14’ long Vibration Dampener (4) Washer (4) Washer (6) Base Plate Timer Motor, 115V, 50/60 Ha Motor, 230V, 50/60 He Slotted Set Screw, 5/16-18.NC-2 x %” long Nylon Set Screw Sleeve Spacer (3) Latch Pin Latch Pin Lock N.'3) Flat Head Slotted Screw %4-20 NC 2x 1%" (3) Head Adapter Disk Cover Retaining Ring Cover Base Control Panel Switch Double Pole, Double Throw Pointer S-Hook Fiber Glass Liner Insulation Serial Data Plate Round Head Drive Screw, Parker-Kalon #0 x 3/16" Motor Dampener (3) Round Head Slotted Screw, #8-32 UNC-2A x .26 Ig JEC Part No. 42125 42126 50 7907 1884 1885 30888 30877 768 43650 43649 50 7932 30882 30887 30878 50 7915 7912 50 30875 30876 43728 42958 30839 30902 31674 31675 41240 50 30992 50Se | Motor Parts Description Spring Lockwasher Ground Head Assembly Strain Relief, Heyco, SR-6L-1 Plate Adaptor Cord Switch Face Nut, Knurled Screw Pan Hd, J-40 UNC-2A x .3819 Armature, 115V 230V Bearing (2) Brush Assembly Brush Holder and Cap Poge 11.0 IM116A, 1EC Part No. 50 33790 50 38803 42958 42011 43651 43654 43652 43653 43638