Vanair ADHD Powertech - Page 42

TROUBLESHOOTING Section 7 - Pg 02
7.2 Troubleshooting Guide (Continued)
SYMPTOM
PROBABLE CAUSE
REMEDY
COMPRESSOR WILL NOT
BUILD UP FULL
DISCHARGE
(CONTINUED)
Dirty Air Filter
Check the filter and change element if required. element if required
Pressure Regulator Out of
Adjustment
Adjust regulator according to control adjustment
instructions in the Maintenance section.
Defective Pressure
Regulator
Check diaphragm and replace if necessary.
Incorrect Compressor Speed
Check & adjust to proper speed.
IMPROPER UNLOADING
WITH AN EXCESSIVE
PRESSURE BUILD-UP
CAUSING PRESSURE
RELIEF VALVE TO OPEN
Pressure Regulating Valve
is Set Too High
Readjust.
Leak in Control System
Causing Loss of Pressure
Signal
Check control lines.
Defective Pressure
Regulating Valve
Repair valve.
Inlet Valve Jammed
Free or replace valve.
Defective Pressure Relief
Valve
Replace pressure relief valve.
INSUFFICIENT AIR
DELIVERY
Plugged Air Filter
Replace.
Plugged Air/Fluid Separator
Replace separator element and also change
compressor fluid and fluid filter at this time.
Defective Pressure
Regulator
Adjust or repair.
Engine Speed Too Low
Readjust engine speed.
EXCESSIVE
COMPRESSOR FLUID
CONSUMPTION
Clogged Return Line
Clear orifice.
Defective Shutdown
Blowdown Valve
Diaphragm
Replace diaphragm.
Leak in the Lubrication
System
Check all pipes, connections and components.
Separator Element
Damaged or Not
Functioning Properly
Change separator element.
Fluid Sump Overfilled
Drain to proper level.
COMPRESSOR
OVERHEATING
Dirty Fluid Cooler Core
Clean core thoroughly.
Plugged Fluid Cooler Tube
(Internal)
Clean tube thoroughly.
Low Sump Fluid Level
Fill.
Plugged Compressor Fluid
Filter
Change element.
Electric Fan is Not
Functioning
Check wires, fan motor, & fan switch for fault &
replace faulty part.