Technical Support
Subject
RAPTAIR-MF Error Codes and Symptoms
Document
Version
Department
Revision Details
Revised by
Tech
Engineering
Implemented
EXT-MF-015
B
Tech
Update Systems affected
MSP
N/A
N/A
25 June 2018
Page
5
of
7
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Trouble Shooting Table
Symptom
Possible Cause
Corrective Action
Frequent relief valve
operation
Pressure control line plugged
or frozen
Remove and clear the line
System still at high pressure
Wait for system blow-down or
bleed off all system pressure
Defective relief valve
Replace the valve
Compressor does not run
High system pressure
system will not start with
more than 10 psi system
pressure
High oil temperature
See “frequent over-
temperature shut-
down”
Frequent over-temperature
shut-down
Low oil level
Check oil level with
equipment on level ground
Restricted oil lines
Check for kinked or pinched
lines
Plugged oil filter
Replace oil filter
Cooler not functioning or
plugged
Replace or clean oil cooler
Engine cooling system failure
(high engine temperature)
Correct problem
High ambient temperatures
Reduce duty cycle
Oil temperature sensor failure Replace if defective
Excessive oil in the air
Coalescing separator failure
Replace element
Clogged scavenge line
screen
Clean or replace
High oil level
Check oil level with equipment
on level ground
Operating angle in excess of
15 degrees from horizontal
Reduce operating angle
Air operated equipment is
faulty, or not correctly
connected to supply valve
Test air operated equipment
for proper operation and
connect to supply valve
Incorrect start-up/ shutdown
procedures
Observe start-up/ shutdown
procedures detailed in the
Owner’s Manual
Objectionable noise level
Excessive gear wear
Replace gearbox assembly
