TMG -HW41T Product Manual page 28

PROBLEM
From inlet
From low pressure (inlet)
line fittings
From float tank(option)
From pressure fittings
From quick connects
From pump
From trigger gun
From nozzle
From unloader
From variable pressure
Lance(option)
Unloader will not unload
From pressure relief valve
WW W . T M G I ND U S T R I A L . C O M
FLUID SYSTEM DIAGNOSTICS- Leaking
ANY LEAKS SHOULD BE REPAIRED ASAP TO
PREVENT DAMAGE TOTHE SYSTEM.
POSSIBLE CAUSE
Garden hose washer
Loose clamps or connections
Float tank full of water or stuck
Fittings not tightened or taped, or
cracked
Bad o-rings
Bad packing
Bad rod o-ring
Stripped connectors
Weep gun (optional)
Damage gun valve ball or seat
Bad o-rings oe selas
Bad o-rings at adjusting knob
Debris in unloader
Sever leak on the outlet of unit
System over pressure
Clogged nozzle
Trigger gun valve not working
Excessive pressure spike
Wear or damage to ball or seal
Improper relief valve adjustment Adjust valve properly.
SOLUTION
Ensure the washer is present and in good condition.
Low pressure line should be properly sealed on barb and
tightly clamped.
If float is not floating above water, check the float to see if it
has filled up with water. If necessary, drain and seal.
Usually metal to metal fittings should be taped with Teflon tape
or lock tight to provide a tight seal.
If quick connect o-ring shows wear or damage, replace it.
If the seal leak is detected under the pump manifold, packing
may be worn and in need of
replacement.
If o-rings show wear or damage, they may need replaced.
Physical damage may not be apparent, but unseen warping
from freezing or extreme pressure
can still cause leakage.
If a weep gun has been installed, check the gun valve seat to
ensure it is functioning properly.
Inspect trigger gun valve assembly for damage or ware to ball
or seat. Lodged debris can stop
valve from closing. Repair with kit or replace.
If quick connect o-ring shows wear, damage or improper
seating.
Inspect o-rings for ware or damage and replace as necessary.
Take bottom nut off unloader, identify ball, spring and seat.
Clean out any debris and
reassemble.
Check for leaks and repair.
See pressure and flow diagnostics to find the cause of the
excessive pressure and correct it.
Spray pattern will be distorted if nozzle is clogged, clean out.
If trigger gun valve action is not correct, repair or replace.
If water spurts from valve when trigger is released, check
unloader adjustment. Pressure spike
should be below the level where pressure relief valve is
activated.
Inspect ball and seal for damage and adjust as necessary.
P2 8 / 4 1 T ol l Fr e e : 1 - 8 7 7 - 7 6 1 - 2 8 1 9