Rap 2.55 Elevator Lift Motor - Challenge CMT-130TC Service Manual

RAP 2.55 Elevator Lift Motor

Elevator I/O PWB Output 2
The elevator lift motor lifts all of the elevator
shelves upward incrementally. The motor is lo-
cated in the base of the Elevator (Figure 2-82).
Possible Fault Indicators

The Elevator never lifts.

The Elevator continuously lifts until the
timeout period.
Initial Actions
Check inside the Elevator for a book jam be-
tween the side frames and the lift plates.
Check that all cables between the trimmer, Ele-
vator, and Tilt Infeed Conveyor are securely fas-
tened and are not damaged.
Check for a tripped circuit breaker CB1 on the
Elevator electrical panel.
Check for loose or damaged motor wires at the
Elevator electrical panel.
Check that the Elevator pusher microswitch is
functioning and set properly (RAP 2.65 Elevator
Pusher Interlock).
If lift motor runs continuously, check the lift plate
position sensor (RAP 2.62 Shelf Level Detect
Sensor).
Procedure
1. Perform RAP 2.51 Elevator Input Power to
make sure the Elevator is getting proper
power.
2. Switch the main power ON and press the
green start button to initialize the trimmer.
Remove the Elevator lift motor cover. Feed
CMT-130TC Book Trimmer
a book into the Elevator. Is there a mechan-
ical "click" sound from the lift motor brake
when the Elevator should start lifting?
Y N
Disconnect power and replace the motor
brake (PL 5.32 Elevator 56421TCA (5/7)).
3. With the trimmer's hydraulic motor is still
running, go to the Elevator diagnostic screen
(GP 6.2 Input/Output Diagnostics) and ena-
ble outputs. Press the "Lift Book" button.
4. Is there 24 VDC between wires 51 and 73 at
SSR1?
Y N
Disconnect power and replace the Elevator
I/O PWB (REP 4.26 Accessory PWB Re-
placement).
5. Is there 120 VAC between wire 27 at SSR1
and wire 22 at the electrical panel?
Y N
Disconnect power and replace SSR1 (PL
5.37 Elev. Electrical Panel EE-3523).
6. Disconnect power and replace the motor (PL
5.32 Elevator 56421TCA (5/7)).
MAY 2019
2-63
Figure 2-82. Elevator Lift Motor, Elec. Panel
2. Status Indicator RAPs