Krueger Crane Systems INC
4699 Colt Road, Rockford, ILL, 61109
A
Trouble
Shut off and light is on
Cause
1.
Broken cable, bad connection
2.
Counterweight
3.
Defective relay, defective Anti-Two-Block switch
Corrective action
1.
Check all cable for outside damages. Use OHM meter to check Anti-Two-Block circuit as follows: Take wires off
terminal No.3 and No.6 and check with OHM meter to make sure circuit is closed. If not, check the wires and connection
inside the cable reel and from the cable reel to the Anti-Two-Block switch.
Refer to figure 4 on page 7
Note: Counterweight has to be connected to the Anti-Two-Block switch to close the circuit.
2
Make sure counterweight is attached to the Anti-Two-Block switch and is free to move.
3.
Check if 12 VDC is on terminal No.3 and No.6
If 12 VDC is on No.3 but not on No.6 the Anti-Two-Block switch is open. Check step 2 on this page. Check steps A, B, C
on page 13.
If 12 VDC is on No.3 and No.6 check if the voltage is on the relay pin 85 (hot) and 86 (ground). When the relay is
powered you should read 12 VDC on pin 30 and 87.
I
If you read 12 VDC (with the Anti-Two-Block circuit closed, 12 VDC on terminal No.3 and No.6 on pin 3o and 87a check
the Bosch relay.
Refer to A, B, C on page -1
Phone (815) 874-9402
Telex 25-7498
9
