Troubleshooting
20
3A4349B
Troubleshooting
Problem
Cause
Solution
The rotor/stator pump oper-
ates, but output is low
Pump pressure is too low, stator
is too loose.
Tighten stator to achieve suitable pumping
pressure.
Pump pressure is too high, stator
is too tight.
Loosen stator to achieve suitable pumping
pressure.
Stator is worn or damaged.
Tighten stator. If low output continues,
replace stator.
Rotor is worn or damaged.
Tighten stator. If low output continues,
replace stator.
Material hose is clogged.
Clean or replace the material hose.
Applicator or tip is dirty or
clogged.
Clean or replace the applicator or tip.
Large pressure drop in material
hose.
Reduce hose length and/or increase
diameter.
Pump does not operate
Stator sleeve is too tight.
Evenly loosen the stator bolts to reduce pres-
sure. If the pump still does not operate when
bolts are loose, engage the jacking screw (JS)
to further open the stator sleeve. This should
reduce pressure enough to allow the pump to
run. Once running, re-tighten the stator bolts
to achieve appropriate pump pressure.
VFD overload fault.
Turn power disconnect switch to OFF and
wait one minute for VFD to reset. See “VFD
overload fault,” below, for possible causes.
Material hose or applicator is
obstructed.
Clean or replace the hose or applicator.
Dried material in pump assem-
bly.
Clean or replace the pump assembly.
WLD
-6
Summary of Contents for ToughTek MP40
Page 37: ...Notes 3A4349B 37 Notes...
