Troubleshooting Guide - MIRKA RP Manual De Instrucciones

Symptom
Low power and/or low free
speed.
Air leakage through the Speed
Control and/or Valve Stem.
Vibration/rough operation.
Note: All sections referred to under "Solution" are located at the end of the manual in "Service Instructions".
DOC A1228

Troubleshooting Guide

Possible Cause
Insufficient air pressure.
Clogged Muffler)s(.
Plugged Inlet Screen.
One or more worn or broken Vanes.
Internal air leakage in the Motor Housing
indicated by higher than normal air con-
sumption and lower than normal speed.
Motor parts worn.
Worn or broken Spindle Bearings.
Dirty, broken or bent Valve Spring, Valve
or Valve Seat.
Incorrect Pad.
Addition of interface pad or other material.
Improper lubrication or buildup of foreign
debris.
Worn or broken rear or front Motor
Bearing(s).
Check airline pressure at the inlet of the Polisher
while the tool is running at free speed. It must be 6.2
Bar (90 psig/620 kPa).
See the "Housing Disassembly" section for Muffler re-
moval. The Muffler can be back-flushed with a clean,
suitable cleaning solution until all contaminants
and obstructions have been removed. If the Muffler
cannot be properly cleaned then replace it.
Clean the Inlet Screen with a clean, suitable cleaning
solution. If the Screen cannot be cleaned, replace it.
Install a complete set of new Vanes (all vanes must
be replaced for proper operation(. Coat all vanes with
quality pneumatic tool oil.
Check for proper Motor alignment and Lock Ring
engagement. Check for damaged O-Ring in Lock
Ring groove. Remove Motor Assembly and reinstall
the Motor Assembly.
Overhaul Motor. Contact authorized Mirka Service
Center.
Replace the worn or broken Bearings.
Disassemble, inspect and replace worn or damaged
parts.
Only use Pad sizes and weights designed for the
machine.
Only use abrasives and/or interfaces designed for the
machine. Do not attach anything to the Polisher Pad
face that was not specifically designed to be used
with the Pad and Polisher.
Disassemble the Polisher and clean in a suitable
cleaning solution. Reassemble the Polisher.
Replace the worn or broken Bearings.
30
Solution
Rev 04/06/16