HENNESSY INDUSTRIES Coats IBS 2000, Service Manual And Troubleshooting Manual

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26 • Service Manual — COATS Model IBS 2000
Direct Drive
LCD Board Replacement
Caution! This is a liquid crystal display do not
bend or apply direct pressure. Store in a static
bag at temperatures between 32° F - 95° F. Do
not exceed 70% humidity. Do not apply DC
Voltage (see notes in PIEZO REPLACEMENT
procedures).
1. Unplug the balancer.
2. Remove the four (4) nuts on the back of the pod.
3. Disconnect the (red) start switch wire from the switch.
4. Disconnect the (grey) LCD wire from P4 of the
Display Board.
5. Disconnect the LCD ribbon from the LCD board.
6. Remove the four (4) screws holding the LCD Board
to the Touch Panel.
Note:The LCD board has a locating arrow ? on
the back in the upper right corner. Make sure
the arrow is in the UP position before rein-
stalling the new LCD. To adjust the contrast
there is an adjusting potentiometer on the top
of the display board.
7. Install rubber O-rings between the LCD board and
the Touch Panel standoffs. Refer to the Instruction sheet
provided with the new part.
8. Replace the defective LCD Board and reinstall in
reverse order.
9. Plug in balancer.
10. Perform FUNCTION CHECKS.
Start Switch Replacement
1. Disconnect balancer.
2. Remove the four (4) screws on the back of the pod.
3. Disconnect the (red) start switch wire from the switch.
4. Remove the three (3) screws from the start switch.
5. Replace the defective switch and reinstall in reverse
order.
6. Plug in balancer.
7. Perform FUNCTION CHECKS.
Touch Panel Replacement
1. Disconnect balancer.
2. Follow all procedures for Display Board and LCD
Board replacement.
3. Replace defective Touch Panel.
4. Plug in balancer.
5. Perform FUNCTION CHECKS.
Hood Magnet Replacement
1. Remove the rubber hood stop from the hood bracket
on the chassis.
2. Lean the hood back as far as it will go.
3. Remove the magnet from the hood bar.
4. Install the new magnet. Make sure the nylon washer
is between the magnet and the bracket. DO NOT OVER-
TIGHTEN.
5. Place the hood in the down position and install the
rubber hood stop.
6. Check to make sure that the motor starts with the
hood down, but not with it up. The IBS 2000 automati-
cally defaults with HOOD START on.
7. Perform FUNCTION CHECKS.
Hood Switch Replacement
1. Unplug the balancer.
2. Remove the UL cover on the back of the hood sup-
port bracket by drilling out the pop rivets.
3. Remove two (2) screws holding hood switch to hood
bracket and remove hood switch.
4. Disconnect two (2) wires going to hood switch.
5. Connect wires to new hood switch and install.
6. Plug in the balancer.
7. Check to make sure that the motor starts with the
hood down, but not with it up.
8. Perform FUNCTION CHECKS.
Safety Interlock Switch Replacement
1. Unplug the balancer.
2. Remove the UL cover on the back of the hood sup-
port bracket by drilling out the pop rivets.
3. Remove two (2) screws holding interlock switch to
hood bracket and remove interlock switch.
4. Disconnect two (2) wires going to hood switch.
5. Connect wires to new hood switch and install.
6. Plug in the balancer.
7. Check to make sure that the motor starts with the
hood down, but not with it up.
8. Perform FUNCTION CHECKS.
On/Off Switch Replacement
1. Unplug the balancer.
2. Remove the four (4) bolts from the lower accessory
column and remove the cover.