TMG -HW41T Product Manual page 25

PROBLEM
Excessive pressure
Pump chatters, caviataion,
vibration
Inlet line vibrates
Outlet line vibrates
Inlet and outlet lines vibrate
WW W . T M G I ND U S T R I A L . C O M
POSSIBLE CAUSE
Small spray nozzle
Faulty pressure gauge
Improperly adjusted unloader
Faulty unloader
Air in system
Chemical line not submerged
Inlet line restricted
Inadequate water supply
Float valve stuck (optional)
Turbulence in float tank (optional) Excessive turbulence allows the pump to draw air into the
Inlet or inlet strainer clogged
Water supply to hot
Air in system
Debris in inlet check valves
Air in system
Debris in inlet check valves
Pump packing bad
Inlet and outlet check valves
fouled
SOLUTION
Nozzle must be properly sized for the rated flow and pressure.
Reset unloader or pressure relief
if nozzle size is changed.
Check the pressure gauge using a properly calibrated
pressure gauge on quick connects at the
equipment outlet.
Adjust to the proper pressure using pressure gauge.
Check the unloader action. If it is not working properly, it may
need repaired or replaced.
Inspect places where air can enter the system. i.e. fittings,
hose, connections etc.
If the chemical valve is on, ensure that the chemical line is
fully submerged in the chemical
All inlet connections should be snug and not kinked to reduce
the chances of pump starvation.
Water supply to the system must meet or exceed the rated
flow (GPM) on the serial number
plate. Faucet must be completely opened or water above the
tank outlet in a gravity fed system.
If float valve is stuck in the up position, water can not enter
the float tank. Unstick valve if possible of replace if necessary.
system. Correct excessive turbulence.
Regularly clean the inlet and inlet strainer to keep debris from
entering the float tank
Inlet temperature should not exceed 140F - 160F range.
Inspect places where air can enter the system, i.e.; fittings,
hose, connections etc.
If there is no float tank and the outlet line does no vibrate, the
inlet check valve may be clogged.
Remove debris. Check o-rings under valves.
Inspect places where air can enter the system, i.e.; fittings,
hose, connections etc.
If there is no float tank and the outlet line does no vibrate, the
inlet check valve may be clogged.
Remove debris.
If they show signs of ware or damage, replace them.
Look for the source of debris in the inlet and discharge check
valves and remove.
P2 5 / 4 1 T ol l Fr e e : 1 - 8 7 7 - 7 6 1 - 2 8 1 9