![background image](http://html.mh-extra.com/html/graco/therm-o-flow-t7-series/therm-o-flow-t7-series_instructions-manual_2251693022.webp)
Troubleshooting
22
309832D
Low or no flow of material from unit.
No power to tank.
Plug in unit. Turn on/off switch ON.
Front panel settings not properly set. See
Adjusting panel controls
, page
Not enough material in tank.
Add material. Material should not be
higher than 1.5 in. (4 cm) from the top
of the tank. See
Adding material to
tank
, page 13.
Pressure adjuster is set too low.
Adjust pressure adjuster, see
Dis-
pensing material
, page 18.
Set screw on pump/motor coupler is
loose.
Tighten set screw (32) on shaft flat of
pump/motor coupling.
Viscosity of material too high.
Increase temperature settings. Refer-
ence material manufacturer’s instruc-
tion and follow
Adjusting panel
controls
, page 15.
Increase orifice size.
Gun nozzle plugged.
Clean nozzle or replace. See appro-
priate applicator manual.
Hose is kinked or bent.
Check for kinks in hose, replace if
damaged. See
page 23.
Pump damaged.
Replace pump, see
Replacing
pump
, page 28.
Material leaks from hose connection. Threads at hose connection not
seated properly.
Tighten connection. Clean threads by
heating or using purging compound
118090.
Applicator not heating.
Front panel control not properly set.
See
Adjusting panel controls
, page
Tank has not yet reached set temper-
ature.
See
Adjusting panel controls
, page
Applicator heater is damaged.
See appropriate gun manual.
Applicator thermistor is damaged.
See appropriate gun manual.
Problem
Cause
Solution