8 | Repair
Spectron Gas Control Systems GmbH
22
G56-SP_0520
Detect and assess causes of malfunction
Rectify faults and restore operational readiness
Repairs to the product may only be performed by the manufacturer or specialist personnel in-
structed on the system.
Work on electrical system parts may only be performed by a qualified electrician.
Before beginning work, the pressure control panel must be purged (see "Flushing through to the
process"). After completing the works, a re-commissioning process must be carried out (see
"
8.2 Troubleshooting and fault rectification
Fault
Possible cause
Remedy
Outlet pressure too low
Process gas source empty
Check inlet pressure on the
pressure regulator and change
the process gas source if ne-
cessary
Vibration noises in the pres-
sure regulator
Pressure regulator faulty
Replace pressure regulator
Pressure regulator frozen
Flow rate too high
Reduce flow rate or use gas
preheater if possible
System pressure cannot be set
to the desired value
Pressure regulator faulty
Replace pressure regulator
System pressure outside the
intended system pressure
Only operate the system at the
intended range
Flow insufficient or fluctuating
Inlet pressure of the process
gas too low
Increase inlet pressure
Valve faulty
Replace faulty valve
Filter loaded
Change filter
Relief valve, over-pressure
valve, safety valve or burst
disc are discharging gas
Impermissible pressure rise in
the outlet pressure range
Close all valves and check
pressure control panel
HPI valve cannot be opened or
closed
Pneumatic pressure too low
Check pneumatic pressure
Compressed air hose ripped
Replace compressed air hose
out
Leak
Connection leaking
Flush pressure control panel
clear and perform pressure
test and leak test