ELGi EG 22 - Page 47

6.15
Maintenance
Problem Cause Solution (go sequentially)
High oil carry over
High oil level
Drain excess oil and maintain the recommended oil
level.
Oil is milky Replace oil and maintain the recommended level.
Scavenge return line non return valve
(NRV)/ orifice clogged
1) Remove the return line NRV/orifice and clean it
thoroughly.
2) Change/clean the air filter.
Scavenge return line tube clogged
Remove and clean the clogged scavenge return line
tube.
Scavenge return line tube gap not
maintained (not applicable EG11 to EG22)
Remove the return line tube from
the separator and correct it.
The spin-on separator internal pipe thread
damaged (applicable to EN series)
Replace the internal pipe.
High discharge oil temperature (DOT) Refer to the diagnosis procedure for high DOT.
Improper grade of oil Use ELGi recommended Air lube oil.
Separator punctured/collapsed (not
applicable to EG11 to EG22 units)
Replace with new separator.
Separator element bonding ruptured
(not applicable to EG11 to EG22 units)
Replace with new separator.
Compressor runs at lower pressure than
normal pressure.
1) Use suitable higher capacity compressor or match
demand to compressor capacity.
2) Arrest all line leakages.
Minimum pressure valve (MPV) opening
earlier than at the specified opening
pressure* 4.5 bar.g (65.26psi.g).
* 3.5 bar.g ( 50.8 psi.g) for compressors
with working pressure 4.5 bar.g
Replace MPV kit/assembly.
High tank pressure
Neuron microcontroller pressure settings:
1) Unload pressure set value is above
specification.
2) High tank pressure set value is below
specification.
Check and correct the unload pressure and high tank
pressure values in Neuron micro-controller
Intake valve malfunction
1) Check and replace intake valve kit if required.
2) Check the solenoid valve and clean or replace if
required.
3) Check and replace the actuator kit if required.
BDV malfunction Check/replace
Compressor started with air outlet ball
valve closed
Open the outlet ball valve.
Solenoid valve malfunction
Check the solenoid valve and clean or replace if
required.
Neuron microcontroller malfunction Replace the Neuron microcontroller
Pressure transmitter malfunction Replace the pressure transmitter
MPV stuck up (check with pressure gauge in
AOS tank )
Replace the MPV kit.
Separator element choked
Replace the separator element