17
B20352 ECN-12354
Trouble-Shooting
SYMPTOM
PROBABLE CAUSE
REMEDY OR CHECK
PRIMARY REGULATOR
Venting at relief valve.
Over pressure due to creeping or
Replace regulator seat
faulty regulation of primary regulator.
and nozzle components.
Gas leakage around
Loose bonnet.
Tighten bonnet.
regulator body and bonnet
Diaphragm leak.
Replace diaphragm.
Required gas flow not available.
Line regulator not set correctly.
Set delivery pressure per
specifications.
Flow capacity too high.
Reduce flow capacity.
LINE PRESSURE REGULATOR
Gas leakage around regulator
Loose bonnet.
Tighten bonnet.
body/bonnet.
Pipeline not at desired pressure.
Line regulator not set correctly.
Set delivery pressure per
specifications.
SOLENOID VALVES
Gas leakage through a closed
Solenoid faulty.
Replace solenoid.
solenoid.
Power not reaching the solenoid.
Check all wiring connections.
Electrical System
No indicator lights or displays
Power Input.
Check electrical power supply.
on front panel come on when
power is hooked up.
Internal wiring disconnected.
Check all wiring connections.
Manifold controller PCB defective.
Replace manifold controller PCB.
Red indicator light(s) on but
Master valve, header valves, or
Slowly open valves.
both banks are full. (green light
cylinder valves on bank are closed.
on one bank is on)
Bank pressure below minimum inlet
Replace cylinders.
pressure
requirements.
Solenoid not actuating
Power not reaching the solenoid.
Check all wiring connections.
properly (not “clicking”
during power-up—v4.0.x
PCB not driving the solenoid.
Component failure on PCB.
and up).
Replace PCB.
PCB configured for HGM2.
Check DIP switch settings.
Solenoid faulty
Replace solenoid.
