3M 39600 manual could result, Circuit Breaker, Drive Belts

Maintenance (Continued)

WARNING – Turn off electrical power and disconnect power cord from electrical supply before beginning maintenance. If power cord is not disconnected, severe injury to personnel

could result.

Circuit Breaker Drive Belts

The case sealer is equipped with a circuit breaker which trips if the motors are overloaded. Located inside the electrical enclosure on the side of the machine frame just below the machine bed, the circuit breaker has been pre-set at 2.2 amps and requires no further maintenance.

WARNING – The following procedure must be performed by

trained service personnel because of the high voltage electrical hazard within the control box.

If circuit is overloaded and circuit breaker trips, unplug machine from electrical power:

1.Determine cause of overload and correct.

2.Remove electrical enclosure cover.

3.Press the red "Reset" button and then the green "Start" button.

4.Replace cover.

5.Plug in machine.

6.Press machine "On" button to resume case sealing.

Note – 3M recommends the replacement of drive belts in pairs, especially if belts are unevenly worn.

REPLACEMENT – SEE STEPS 1 THRU 8 TENSION ADJUSTMENT – SEE STEPS 3, 7 AND 8

1.Crank the upper taping head to its fully raised position.

2.Remove and retain the three screws (A), three washers (B) and side cover (C). See Figure 4-2.

3.Remove and retain the screw (D), washer (E) and belt tensioner cover (F).

4.Turn belt adjustment screws (G) counterclockwise on both the upper and lower tension assemblies until belt is loose. See Figure 4-3.

5.Locate the belt lacing (joint) by turning the belt manually. Remove the pin with pliers. Remove and discard old belt.

Figure 4-2 – Box Drive Belt (Left Side View – Infeed End)

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