ACCO Brands GLX20, GLHS9, GBC GLS28 TTroubleshooting, Mechanical Operation, Electrical Operation

5.0 TTroubleshooting 8 3

Mechanical Operation

The shredder uses two rotating cutting shafts, which are driven by an electrical motor to shred paper.

Electrical Operation

When the center power on switch is pressed, all the LED warning symbols on the indicator

The shredder will now

be in standby mode and the “Power-on” symbol on the indicator panel will be illuminated amber. When the shredder is in standby mode and the the cabinet door is opend,the normally closed door adjar micro switch is opened and prevents power to the motor until the door is closed.. When the bag full sensor is triggered, the bag full icon will illuminate. The control board will then disable the motor circuit until the shredder bag is either cleared or emptied.

When the shredder is severely loaded down, the control board will illuminate red and disable the motor circuit.

Electrical Components

Motor - Thermally protected motor designed for continous operation.

Capacitor - AC motor run capacitor.

Power on/Auto feed on switch - The Power on /Auto feed on switch, when depressed, connects the hot and neutral circuits to electrical components of the shredder.

Door ajar, Machine head safety switch - The safety switch is a normally open micro switch which is actuated by a trigger located inside of the cabinet door. The switch is normally closed when the door is closed and when the machine head is installed on the cabinet.

Bag Full Flap Switch - The ￿ap switch is a normally open switch actuated by the bag full ￿ap. When the shred bag becomes full of shredded material, the bag full ￿ap is pushed back and power is then removed from the motor circuit.

Paper Sensors - Located in the throat area consist- ing of two components, the emitter and receiver.

Emitter - The infrared light beam from the light emit- ting diode is sensed by the receiver to activate/deac- tivate the control board.

Receiver - The receiver is a light activated diode, which works in conjunction with the emitter to acti- vate/deactivate the control board.

Testing Electrical Components

WARNING!

Always disconnect the power cord from receptacle before making continuity or resistance tests.

Switches

Set meter to read resistance. Check switches for continuity from common to closed contacts and ity from common to the open contact.

Emitter - Set meter to the diode setting. Disconnect emitters from the control board. With the positive meter probe on the emitter wire and the negative meter probe on the black-stripped emitter wire, check for approximately .639 ohms. Reverse the

meter leads and should be read.

Receiver - Set meter to read 20M ohms. Disconnect the receiver from the control board. With the positive meter probe on the receiver wire and the negative meter probe on the receiver wire check for app- roximately 4.62 Mega ohms under normal room light. The resistance will increase when blocked.

Reverse the meter leads and should be read.