 |
|||
|
|
|||
|
Page Title:
FAN DOES NOT OPERATE AT HIGH SPEED. (Cont) |
|
||
| ||||||||||
|
|
 TM 9-2320-364-34-1
6. FAN DOES NOT OPERATE AT HIGH SPEED (CONT).
5.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Voltage test.
Unit Troubleshooting
on Page 2-233
STE/ICE-R #89.
tasks completed.
Fan operates at low speed.
REASON FOR QUESTION
EPAC controller OK.
Are 22 to 28 vdc measured on
Wire 1734 OK.
wire 1733 at high speed fan
If 22 to 28 vdc are present, wire
LHS supply solenoid valve OK.
1733 is shorted and fan will not
lockout solenoid connector,
LHS differential pressure
operate at high speed.
sensing valve OK.
terminal 2 with hydraulic
selector switch off?
POSSIBLE PROBLEMS
Wire 1733 faulty.
High speed fan lockout solenoid
valve faulty.
High speed fan lockout
Go to Step 6 of this
differential pressure
NO
Fault.
sensing valve faulty.
Low speed fan differential
pressure sensing valve faulty.
YES
Repair wire (see
schematic Fig 2-3) or
replace chassis wire
harness (Para 6-29).
Verify repair, go to
Step 10 of this Fault.
2-232
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals