508NCE/512NCE Escalator Spare Parts Leaflet
Safety Devices, Switches, 50-DAA26204LP
Start-Stop Station Sep. 12, 2017 / Page 1 of 15
Unpublished Work—© Otis Elevator Co. ESCALATOR ENGINEERING
Safety First! Otis Elevator Company
SIT GUANGZHOU
50-DAA26204LP History
Leaflet Description
508NCE/512NCE_ANSI Escalator Safety Device
DAA26204LP REPLACES DAA26204F
Leaflet Revisions
Date Revised Subject Matter Expert Reason for Revision
May 11, 2009 Zhou, Wei Original document
Sep. 23, 2009 Liang, Ye Key (DAA194K1) added on page 7.
GAA177KR1 & GAA233Z1 added on page 5.
Oct. 30, 2009 Liang Ye AAA629AG11 replaced GAA629AC2 & AAA629AG12
replaced GAA629AC3 on page 8.
SPL code 10 changed to 50. GBA26803A2 changed to
GBA26803A1 and GCA26803B2 changed to
Nov. 30, 2009 Zhou Wei
GCA26803B1 on page 3. Safety switch codes are added
on pages 4-7. DAA174ADE71 added on page 10.
Broken main drive chain switch changed to GBA177HA1
Mar. 05, 2010 Liang Ye
on page 4; AAA608D22 added on page 10.
May 20, 2011 Guo, Huajia Ref . no. 33 added.
1. Add Part No. GAA177FD5 for Broken main drive
chain switch on page 14.
2. Part No. f or Emergency stop box were changed to
DAA308DQ1/2 on page 8
Jan 13, 2013 Deng, Wenke
3. Page 12: add GBA177HL1/2 for MMS control device.
4. Page 13: add GAA177GZ1 for dual Dual Piezo
Electric Contact Mat.
5. Page GOA177AM3 for auxiliary brake.
1. Add REF.No. 11a & 11b on page 8, and REF. No. 44 &
Dec. 30, 2013 Deng, Wenke
45 on page 15.
Oct. 15, 2015 Guo, Huajia 1. DAA26220CR1/2 replaces GAA26220BV16.
April 12, 2017 Guo, Huajia 1. Ref . No. 8A: DAA608D2 changed to DAA608L3.
April 30, 2017 Guo, Huajia 1. Ref . No. 46/47: DAA174CCJ3/4 added.
1. Ref . No. 42: GAA177FD5 changed to DAA177FR1;
Sep. 12, 2017 Guo, Huajia
2. Ref . No. 43: DAA385NNY1 changed to XAA26220DE3.
Related Drawings
Drawing No. Title Drawing No. Title
DAA27076LP Saf ety Device (ODS) GAA27076FW Attached parts (ODS)
Page 2 Sep. 12, 2017 Unpublished Work—Otis Elevator Co.
Related Documents
Document ID Title
ODS DAA27076LS Saf ety device – mechanical part
Subject Matter Expert
Name Department
Guo, Huajia SIT-GUANGZHOU
About Spare Parts Leaflets…
This document lists the lowest replaceable units (LRUs) for the standard version of the product. The LRUs are
chosen by a team of Otis associates representing engineering and manufacturing.
While goal of this document is to make parts identification as easy as possible, the document cannot be all-
inclusive. Elevator and escalator contracts classified as “special” or “custom” are not addressed here. For
such contracts, please refer to specified information, the contract folder, TIPs, Field Education Articles,
Construction Letters, etc. for further information.
If you have any suggestions about this document, please contact the subject matter expert listed on this page.
508NCE/512NCE Escalator
50-DAA26204LP
Safety Device
DAA26204LP
REF. No. PART No. OR M.L. DESCRIPTION
1 GBA26803A1 RS4R BOARD
2 GCA26803B1 RSFF BOARD
Page 4 Sep. 12, 2017 Unpublished Work—Otis Elevator Co.
508NCE/512NCE Escalator
50-DAA26204LP
Safety Device
DAA26204LP
REF. No. PART No. OR M.L. DESCRIPTION
3 GBA177HK1 Broken step & chain wheel switch (S10, S20)
4 GBA177HL2 Broken step chain switch (S14, S15)
Unpublished Work—Otis Elevator Co. Sep. 12, 2017 Page 5
508NCE/512NCE Escalator
50-DAA26204LP
Safety Device
Skirt obstruction switch
Step upthrust switch
5
6A
6
DAA26204LP
REF. No. PART No. OR M.L. DESCRIPTION
5 GBA177HA1 Comb plate safety switch (S1, S2, S16, S17, S1.1, S2.1, S16.1, S17.1)
Skirt obstruction switch (S3, S4, S18, S19)
Step upstrust switch (S12, S13)
6 GAA177KH1 Floor plate safety device (S5, S6)
6A GAA177KR1 Floor plate safety magnetic switch(S5, S6)
GAA233Z1 Floor plate safety magnetic switch accessories--- magnet
Page 6 Sep. 12, 2017 Unpublished Work—Otis Elevator Co.
508NCE/512NCE Escalator
50-DAA26204LP
Safety Device
8 & 8A
9 & 9A
10
DAA26204LP
REF. No. PART No. OR M.L. DESCRIPTION
7 GBA177HM1 Step chain wheel safety switch (S94, S95)
8 DAA608A3 Handrail speed monitoring device (B8, B9) for ECS-ANSI control system
8A DAA608D2 Handrail speed monitoring device (B8, B9) for GCS-ANSI control system
DAA608L3
9 DAA608A2 Missing step device sensor (B25, B26) for ECS-ANSI control system
9A DAA608B3 Missing step device sensor (B25, B26) for GCS-ANSI control system
10 GCA177GF1 Handrail entry safety switch without reset button (S21, S22, S23, S24)
Unpublished Work—Otis Elevator Co. Sep. 12, 2017 Page 7
508NCE/512NCE Escalator
50-DAA26204LP
Safety Device
17 16 14
15
11-11b
12-13
18
19
DAA26204LP
REF. No. PART No. OR M.L. DESCRIPTION
11 GAA26220BV16 Emergency stop box, for NYC
DAA26220CR1 Emergency stop box, for NYC, upper landing
DAA26220CR2 Emergency stop box, for NYC, lower landing
11a DAA26220NNV21 Emergency stop box with hole for DT connector, upper landing
11b DAA26220NNV11 Emergency stop box, lower landing
12 DAA308DQ1 Emergency stop box with hole for DT connector assembly, upper landing
Including these components: DAA177NPJ1, DAA194K1, GAA269V1,
DAA177NPT1, DAA177NPS1, label on cover.
13 DAA308DQ2 Emergency stop box assembly, lower landing. Including these
components: DAA177NPJ1, DAA194K1, GAA269V1, DAA177NPT1,
DAA177NPS1, label on cover.
14 DAA177NPJ1 Key switch & key (S63, S63.1)
DAA194K1 Key
15 GAA269V1 Buzzer
16 DAA177NPT1 Stop button (S25, S26)
17 DAA177NPS1 Cover switch
18 GAA176HN1 DT connector
19 GAA176DS1 DT connector cover
Page 8 Sep. 12, 2017 Unpublished Work—Otis Elevator Co.
508NCE/512NCE Escalator
50-DAA26204LP
Safety Device
20, 21 20A
22
24
23
DAA26204LP
REF. No. PART No. OR M.L. DESCRIPTION
20 GAA629AC2 OPTO transmitter for ETA-PLUS
AAA629AG11
20A DAA174AKE2 Cable f or ETA-PLUS sensor
21 GAA629AC3 OPTO receiver f or ETA-PLUS
AAA629AG12
22 DAA424NPE2 Traf f ic flow light for glass balustrade
23 DAA424E2 Traf f ic flow light for opaque balustrade
24 DAA424Q3 Truss interior lighting
Unpublished Work—Otis Elevator Co. Sep. 12, 2017 Page 9
508NCE/512NCE Escalator
50-DAA26204LP
Safety Device
26
25
27-30
DAA26204LP
REF. No. PART No. OR M.L. DESCRIPTION
25 DAA26220AD2 Power supply box for comb lighting and under step lighting
26 DAA424P11 Lamp f or under step lighting
27 DAA424H21 Lamp f or comb lighting, green
28 DAA424H22 Lamp f or comb lighting, blue
29 DAA424H23 Lamp f or comb lighting, orange
30 DAA424H24 Lamp f or comb lighting, white
Page 10 Sep. 12, 2017 Unpublished Work—Otis Elevator Co.
508NCE/512NCE Escalator
50-DAA26204LP
Safety Device
31
33
32
DAA26204LP
REF. No. PART No. OR M.L. DESCRIPTION
31 DAA174ADE71 Inspection blind plug assembly
32 AAA608D22 Flooding Level Sensor(B17)
33 DAA424V2 Traf f ic flow light
Unpublished Work—Otis Elevator Co. Sep. 12, 2017 Page 11
508NCE/512NCE Escalator
50-DAA26204LP
Safety Device
34 35
DAA26204LP
REF. No. PART No. OR M.L. DESCRIPTION
34 GBA177HL1 Machine movement switch (S28.1)
35 GBA177HL2 Machine movement switch (S28.1)
Page 12 Sep. 12, 2017 Unpublished Work—Otis Elevator Co.
508NCE/512NCE Escalator
50-DAA26204LP
Safety Device
36
37 & 39
38
DAA26204LP
REF. No. PART No. OR M.L. DESCRIPTION
36 GAA177GZ1 Piezo Electric Contact Mat
37 DAA174AKE5 Cable f or Piezo Electric Contact Mat
38 DAA608C3 STEP SPEED SENSOR (CONTRINEX DW-AS-633-M12)
39 DAA174AKE3 Cable f or STEP SPEED SENSOR (CONTRINEX DW-AS-633-M12)
Unpublished Work—Otis Elevator Co. Sep. 12, 2017 Page 13
508NCE/512NCE Escalator
50-DAA26204LP
Safety Device
41
40
43
42
DAA26204LP
REF. No. PART No. OR M.L. DESCRIPTION
40 GOA177AM3 Auxiliary brake switch (S53)
41 GBA177HA1 Broken main drive chain switch (S28) for ECS-ANSI control system
42 GAA177FD5 Broken main drive chain switch (S28) for GCS-ANSI control system
DAA177FR1 Broken main drive chain switch
43 DAA385NNY1 Broken main drive chain tension box for GCS-ANSI control system
XAA26220DE3 Broken chain device assembly
Page 14 Sep. 12, 2017 Unpublished Work—Otis Elevator Co.
508NCE/512NCE Escalator
50-DAA26204LP
Safety Device
44
45
46-47
DAA26204LP
REF. No. PART No. OR M.L. DESCRIPTION
44 GAA27000A1 Diagnostic tool
45 DAA26220BT1 Inspection box
46 DAA174CCJ3 Cable, f or Missing Step Device, lower landing w/o truss extension
47 DAA174CCJ4 Cable, f or Missing Step Device, lower landing w/ truss extension; and for
Handrail Speed Monitoring Device.
Unpublished Work—Otis Elevator Co. Sep. 12, 2017 Page 15
