Railway Equipment 955, Operating Manual

Page: 37 / 82

P/N R9550-0100 37 © 2018 RAILWAY EQUIPMENT CO.
REV I
11/18
a. Check snow detector head # 1 and wiring.
b. Check Gas pressure sensor and wiring.
c. Check Duct pressure sensor and wiring.
d. After problem is corrected, leave power off for 30 seconds and fuse will
reset.
11. CHECK FUSE # 7 SNOW HEAD # 2:
Fuse # 7 is tripped. Check the following circuits:
a. Check snow detector head # 2 and wiring.
b. Check Sail switch and wiring.
c. After problem is corrected, leave power off for 30 seconds and fuse will
reset.
12. CHECK FUSE # 9 ANALOG 5VDC:
Fuse # 9 is open. Check the following circuits:
a. Check 5V supply for pressure sensor.
b. After problem is corrected, FUSE 9 (P/N 51209) 500ma fuse must be
replaced.
13. CHECK FUSE # 10 PRESSURE/BAT CHARGER:
Fuse # 10 is tripped. Check the following circuits:
a. Check pressure sensor.
b. Check 24V supply for battery backup.
c. After problem is corrected, leave power off for 30 seconds and fuse will
reset.
14. OVERTEMP FIX PROBLEM PRESS DECREASE:
Overtemp sensor has tripped. If the temperature inside the Tie duct exceeds 375 degrees
F, it will cause the ductwork overtemp circuit to trip, shutting down the HAB system.
Only pushing the decrease value push button will reset the unit, giving opportunity to
check the cause of the overtemp condition.
15. OVERTEMP FIX PROBLEMPRESS DECREASE ___ MIN:
The overtemp sensor has tripped. The HAB system will shut down for some time period
then it will reset the unit. NOTE: AUTO OVERTEMP RESET must be enable in order
to see this fault.
16. OVERTEMP WARNING RESTART IN ___ SEC:
If the temperature is close to overtemp value, the unit will restart in a certain time period.
17. OVERTEMP MISSING INSTALL OVERTEMP:
Caused my missing overtemp sensor.
18. MOTOR VOLTAGE LOW: