24
4111-0068 — Oct. 2018
© 2018 Systems, LLC
Symptom
Possible Cause
Solution
Barrier will not raise.
Load on barrier arm.
Remove load. Unit is designed to raise no more than
its own weight
4 way valve stuck in
“lower” position
Remove coil from cartridge valve and cartridge valve
from valve block.
-Check valve for contaminants and/or damage.
-Replace valve if damaged.
-Carefully wipe valve with clean rag (do not damage
“O” rings on valve).
NOTE:
Do not over-tighten coil on valve. Max torque is 10
in. lbs. (just over finger tight). Do not over-tighten valve
into block. Max torque is 15 ft. lbs. which will compress
O-ring and prevent leakage.
Operate unit. Replace valve if problem persists after
all other troubleshooting procedures.
Barrier will not lower.
Faulty spool valve.
Remove coil from cartridge valve and cartridge valve
from valve block.
-Check valve for contaminants and/or damage.
-Replace valve if damaged.
-Carefully wipe valve with clean rag (do not damage
“O” rings on valve).
NOTE:
Do not over-tighten coil on valve. Max torque is 10
in. lbs. (just over finger tight). Do not over-tighten valve
into block. Max torque is 15 ft. lbs. which will compress
O-ring and prevent leakage.
Operate unit. Replace valve if problem persists after
all other troubleshooting procedures.
4 way solenoid valve not
being energized.
Locate solenoid (see pages 28 & 29).
Coil must be energized when barrier is in lowering
mode.
Check valve for magnetism at the coil.
TROUBLESHOOTING
