Waterous Arizona Operations
500-100 & 120-P Operations
Rev 1
Page 17 of 30
Observed
Symptom
Probable Cause
Suggested Remedy
System overheating
Inadequate water flow
through cooler
Ensure adequate water flow through pump. Check Y strainer for
obstruction, clean and reinstall Drain and flush cooler water tubes
Adequate water flow
through cooler.
On-board tank used for cooling for a prolonged period - water too hot to
effectively cool the compressor. Locate source of lower temperature water.
Check oil level -
Adjust level to half of the sight glass on level surface.
Low compressor oil
level:
Check the hydraulic lines for kinks
Change oil filters
Temperature sending
unit and or gauge circuit
malfunction.
Check wire connections at sending unit
High Oil
Consumption
Overfull compressor oil
Adjust level to half of the sight glass on level surface.
Excess of 200 CFM air
flow (on 200 CFM
systems)
Back down RPM's and flow CAFS to relieve pressure, then recheck
Replace Air/Oil Separator Filter
Air/oil Separator Filter
torn or damaged (could
be caused by air flow of
higher than 200CFM)
System being operated at higher than capacity
"Excessive"
compressor bleed
down time on
shutoff
Systems vary in bleed
down time.
If Auto-Sync is operating correctly, and compressor output is within spec,
do nothing.
Engine stalls upon
compressor
engagement
Engaging compressor
while under load
Allow compressor to bleed down before re-engagement
Running system without
flowing air causes oil to
accumulate in
compressor acting like
hydraulic pump
Bleed down air, restart compressor, and move air
Underrated engine
horsepower
Raise engine RPM
Auto-Sync in FIXED /
RUN setting
Engage in AUTO/UNLOAD, then switch to FIXED/RUN
High oil level
Check oil level, adjust level to half of the sight glass with vehicle parked on
a level surface
Compressor locked up
Repair/replace compressor
