Powermatic 1791291K 31A, 6" x 48" Belt and 12" Disc Sander, 1-1/2 HP, 1Ph 115/230V ( )

User Manual - Page 15

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15
TROUBLE SHOOTING for Model 31A Sander
Problem Cause Solution
Machine fails to start. 1. Fuses blown. 1. Replace fuses.
2. Faulty switch. 2. Replace switch.
3. Bad motor. 3. Replace motor.
4. Not connected to power source. 4. Check connection.
5. Connected to wrong voltage. 5. Reconnect to correct voltage.
Belt won’t track. 1. Platen shifted or worn. 1. Move platen 1/32” proud of drum crown.
2. Drum is worn. 2. Replace drum.
3. Belt is streched unevenly. 3. Replace belt.
Abrasive disc comes free 1. Improperly bonded. 1. Clean adhesive off aluminum and
of aluminum discs. reapply adhesive.
Belt slips or stalls on 1. Abrasive belt tension inadequate. 1. Tighten belt.
application of pressure. 2. Reduce pressure.
3. Tighten motor belt.
Disc stalls. 1. Motor belt loose. 1. Tighten motor belt.
2. Disc shaft key missing. 2. Replace pin.
Excessive abrasive belt 1. Too much pressure. 1. Reduce pressure.
replacement. 2. Not using full width of belt. 2. Stroke across belt using full width.
Belt arm won’t index. 1. Shot pin stuck. 1. Remove arm and free shot pin.
2. Broken spring. 2. Remove arm and replace spring.
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