6.16
Maintenance
Problem Cause Solution (go sequentially)
No control air supply to solenoid valve Replace / connect
Loading/unloading
Problem
Solenoid valve malfunctioning
1. Replace the solenoid valve assembly
2. Clean the orifice
No electrical supply for energising the
solenoid valve
Replace the Neuron microcontroller
Intake valve malfunctioning Check and replace the intake valve kit.
Blow-down valve malfunctioning
1. Clean or change BDV assembly.
2. Clean the orifice.
MPV malfunctioning
1. Check and change the MPV kit.
2. Check and change the MPV assembly
Pressure regulator (applicable only to EG 55
to EG 250) setting lower than working
pressure
1. Check and reset the pressure regulator setting to
working pressure+0.3 bar (4.35 psi).
2. Change the pressure regulator assembly.
Actuator failure (applicable only to EG 55 to
EG 250)
Check and change the actuator / kit / assy.
1. Air requirement is more than compressor
capacity
1. Replace the compressor
2. Arrest all pipeline leakages.
2. Working pressure is lower than required
application pressure.
3. Excess pressure drop in pipe line.
Pressure transmitter malfunction
1. Tighten the lap cable
2. Replace the lap cable
3. Replace the pressure transmitter
4. Replace the Neuron microcontroller
Malfunction of R04 relay (loading/ unloading
relay) in Neuron microcontroller
Replace the Neuron microcontroller
Unload mode enabled in Neuron
microcontroller
Disable 'unload mode' in operator settings of the
Neuron microcontroller
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