Waterous 200-B, Installation & Maintenance Manual, Page: 33 / 54

Waterous 200-B Belt-Driven Installation Guide Rev-
Page 33 of 54
Observed
Symptom
Probable Cause Suggested Remedy
Compressor locked
up
High oil level
(compressor is flooded) Check oil level, adjust level to half of the sight glass with vehicle
parked on a level surface
Sump fire Check system and repair
Low oil level or no oil Check system and repair
Air flow meter stuck
at "0" CFM Magnet uncoupled in
meter
Turn air flow on and off to re-couple
Air flow meter stuck
at high CFM Move large amounts of air out discharge and turn air flow on
and off to re-couple
Poor foam (wet or
dry) or no foam
(assuming air
pressure to
discharges is OK)
Using wetting agent and
not foam concentrate.
Use foam concentrate
Foam proportioning
control turned too low. Increase amount of concentrate delivered to manufacturer
recommended amount.
Foam proportioning
control OFF or turned
too low, foam tank
empty.
Make sure proportioner is turned on, foam supply valve is open,
foam tank has concentrate, Y strainer is clean, and supply line is
connected to injector.
Discharge hose
shaking (slug flow)
Foam proportioner ON,
setting correct, and tank
has foam concentrate,
but not providing foam
solution.
Refer to foam proportioner manufacturer's instructions for
detailed calibration and troubleshooting instructions
Foam in the water
system (when
proportioner turned
off)
Foam concentrate was
poured into the on-board
water tank
Flush tank and pump with clean water, refill
Foam manifold drain
lines not isolated from
water drain lines
Isolate to separate drain valve
Cooler line plumbed
from foam manifold
Relocate line to discharge side of pump
Foam manifold check
valve defective
Rebuild/replace check valve
Water in
compressor oil/air
Leaking inside cooler
Freeze damage Isolate cooler and check for leaks, replace if needed, check
drain
Defective air check
valves
Replace or check
Missing air check valves
for discharges
Install check valves