Troubleshooting Guide - MIRKA PBS 10NV Manual De Instrucciones

Troubleshooting guide

Symptom
Low power and/ or low free speed.
Air leakage at the speed control.
Vibration / rough operation.
Possible cause
Speed control set to low speed .
Low air pressure .
Plugged air inlet screen .
Internal air leakage in the motor housing .
Worn or broken vanes .
Housing cracked or damaged .
Dirty, broken or bent valve spring, valve
or valve seat .
Incorrect assembly of air valve .
Worn or broken motor bearing(s) .
Low motor speed .
Solution
Turn the speed control to desired speed .
Check air supply (according to operating
instructions) .
Clean or replace the screen .
Check motor assembly and alignment .
Check air inlet O-ring alignment on motor
assembly .
Install a complete set of new vanes and
rotor .
Contact Mirka authorized service centre .
Disassemble, inspect and replace worn or
damaged parts .
Remove air inlet connection and
reassemble the air valve, with the valve
stem in its upper position .
Replace the worn or broken bearings .
Increase motor speed with flow regulator,
max 6 .2 bar (90 psig) .
Mirka® Pneumatic Belt Sander • PBS 10NV & PBS 13NV
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