3M 3M-Matic S-857, Instructions And Parts List

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19
Troubleshooting
Troubleshooting Guide (arranged in sequence of machine operation)
Problem
Possible Cause Correction
Unit does not cycle.
Cut-off assembly does not retract.
Buffing assembly does not retract.
Cut-off assembly and buffing
assembly cycle extend and retract
and unit stops.
1. Air supply shut off or not
connected to unit.
2. Cover open.
3. Valve V-8 out of adjustment or
defective.
4. Valve V-9 out of adjustment or
defective.
5. Valve V-2 out of adjustment or
defective.
6. Power valve P-1 defective.
7. Kinked air lines.
1. Valve V-3 out of adjustment.
2. Cut-off assembly jammed with
tape holding roller on tape feed
assembly.
1. Valve V-3 out of adjustment or
defective.
2. Flow control closed.
1. Valve V-4 out of adjustment or
defective.
2. Flow control closed.
3. Power valve P-2 defective.
1. Check main air supply line and
turn on unit.
2. Close cover.
3. Adjust or replace valve V-8.
(see page 10)
4. Adjust or replace valve V-9.
5. Adjust or replace valve V-2.
6. Replace valve.
7. Straightened or replace air lines.
1. Adjust or replace valve V-3.
2. Turn off air and retract cut-off
assembly. Actuate and hold V-3
valve and turn on air.
1. Adjust or replace valve V-3.
2. Adjust retract flow control for
buff cylinder.
1. Adjust or replace valve V-4.
2. Adjust extend flow control for
feed cylinder.
3. Replace valve.
Figure 7-1 – Troubleshooting Valve Locations – S-857 Right Side View