Procedure 8.18: REPLACE FAN UNIT AIR FILTERS IN ISLU DRAWER-TYPE UNITS
OVERVIEW
This procedure replaces the UAF235 filter in the ISLU (integrated service line unit) drawer-type fan unit. The unit
contains three fans and one UAF235 filter. The filter is accessed from the rear of the drawer unit.
NOTE 1:
Service air filters at least every 6 months per equipment test list or more often if conditions
dictate.
NOTE 2:
The Model UAF235 air filter replacements can be ordered from:
Universal Air Filter Company, Sauget, IL 62206
PROCEDURE
1.
CAUTION:
Do not vacuum the used air filters UAF235. The used air filters should be replaced
with new air filters.
2.
Open the cabinet rear door.
3.
NOTE 1:
The upper cable assembly serves the fan alarm CP which monitors the fans in the
drawer unit. The state of the alarm circuit is normally open. Unplugging the cable assembly will not
be detected by the
5ESS
®
-2000 switch.
NOTE 2:
It is not necessary to use a fan blocker when replacing the fan unit air filter in a drawer because all
three fans stop when the upper cable assembly is unplugged from the 256A fan alarm CP.
Unplug the upper cable assembly from the 256A fan alarm CP. Apply gentle outward pressure on both sides
of the latching block. Carefully unplug the cable assembly using caution to pull the assembly straight off. See
Figure 8.18-1 .
Response:
All 3 fans stop.
4.
Remove the old air filter by sliding the filter back until it clears the mounting channel.
5.
Insert the new air filter in the mounting channel.
6.
Slide the filter forward until it is fully seated.
7.
CAUTION:
Be careful not to bend the pins on the 256A CP.
Plug in the upper cable assembly that was unplugged in Step 3. Gently push the cable assembly on until it is
locked.
Response:
All 3 fans run.
8.
Repeat Steps through 7 for each drawer in the cabinet, and continue with the next step.
9.
Close the rear cabinet door.
10.
Dispose of the old air filters per local procedures.
235-105-210
October 1999
Copyright © 1999
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Страница 516: ...Figure 10 24 1 KS 23483 L13 Disk Drive Cable Connection Rear View 235 105 210 October 1999 Copyright 1999 Page 2 ...
Страница 517: ...Figure 10 24 2 KS 23483 L21 Disk Drive Cable Connection Rear View 235 105 210 October 1999 Copyright 1999 Page 3 ...
Страница 518: ...Figure 10 24 3 KS 23841 L15 Disk Drive Cable Connection Rear View 235 105 210 October 1999 Copyright 1999 Page 4 ...
Страница 523: ...Figure 10 24 6 Top View of DUP Showing Internal Cabling 235 105 210 October 1999 Copyright 1999 Page 9 ...
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Страница 628: ...a SM inhibited Response OK 2 STOP YOU HAVE COMPLETED THIS PROCEDURE 235 105 210 October 1999 Copyright 1999 Page 8 ...
Страница 653: ...Response OK 2 STOP YOU HAVE COMPLETED THIS PROCEDURE 235 105 210 October 1999 Copyright 1999 Page 16 ...
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Страница 799: ...Figure 11 36 3 1 Cleaning Points 235 105 210 October 1999 Copyright 1999 Page 7 ...
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Страница 1008: ...Figure 11 55 1 CTSNS DIP Switch Settings 235 105 210 October 1999 Copyright 1999 Page 2 ...
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Страница 1165: ...Procedure 14 14 RESERVED FOR FUTURE USE PROCEDURE 1 Reserved For future use 235 105 210 October 1999 Copyright 1999 Page 1 ...
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Страница 1187: ...Procedure 14 18 RESERVED FOR FUTURE USE PROCEDURE 1 Reserved For future use 235 105 210 October 1999 Copyright 1999 Page 1 ...
Страница 1284: ...Figure 15 15 1 PARADYNE Paradyne Corporation 3810 Modem Diagnostic Control Panel 235 105 210 October 1999 Copyright 1999 Page 6 ...
Страница 1287: ...Figure 15 16 1 153A Adapter Connection Figure 15 16 2 AMATPS Block Diagram 235 105 210 October 1999 Copyright 1999 Page 3 ...
Страница 1289: ...Figure 15 17 2 AMATPS Data Link 235 105 210 October 1999 Copyright 1999 Page 2 ...
Страница 1290: ...Figure 15 17 3 Single Housing B25A Cable Assembly 235 105 210 October 1999 Copyright 1999 Page 3 ...
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Страница 1294: ...Figure 15 17 8 201C to TN82 Data Set Cable Drawing 235 105 210 October 1999 Copyright 1999 Page 7 ...
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Страница 1324: ...11 Type and enter q 12 STOP YOU HAVE COMPLETED THIS PROCEDURE 235 105 210 October 1999 Copyright 1999 Page 2 ...
Страница 1342: ...Figure 15 40 1 SCANS II Dial Up Data Set Installation Diagram 235 105 210 October 1999 Copyright 1999 Page 2 ...
Страница 1344: ...Figure 15 40 4 59A1 Mounting Front in Slot J3 Figure 15 40 5 2048A Data Set Front 235 105 210 October 1999 Copyright 1999 Page 4 ...
Страница 1345: ...Figure 15 40 6 Berg Connector Terminations and Layout 235 105 210 October 1999 Copyright 1999 Page 5 ...
Страница 1346: ...Figure 15 40 7 B25A Cable 4 STOP YOU HAVE COMPLETED THIS PROCEDURE 235 105 210 October 1999 Copyright 1999 Page 6 ...
Страница 1360: ...Figure 15 47 2 Typical SCANS III Link Diagram 235 105 210 October 1999 Copyright 1999 Page 2 ...
Страница 1368: ...Response FA or OK appears 17 STOP YOU HAVE COMPLETED THIS PROCEDURE 235 105 210 October 1999 Copyright 1999 Page 2 ...
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Страница 1376: ...Figure 15 55 6 201C to TN83 Data Set Cable Drawing 235 105 210 October 1999 Copyright 1999 Page 6 ...
Страница 1418: ...Figure 15 56 1 PARADYNE 3810 Modem Diagnostic Control Panel 235 105 210 October 1999 Copyright 1999 Page 4 ...
Страница 1421: ...Table 1 1 O M Checklist 235 105 210 October 1999 Copyright 1999 Page 3 ...