Rocky Mountain Crane Service Logs
Customer was operating MDT crane with remote, but all functions were slow. Had the following icon on the display of the remote:
Crane was in P+ mode, which allows for greater capacity, but slows function. On the remote this is controlled with ” A-B ” switch.
In the cab this is controlled by the gray button on the top of the left joystick.
Turn multimeter to the V setting for voltage (If your meter differs, choose the V with the wave symbol and range to 500V)
Locate the G4 junction block on the right side of the control panel above the circuit breakers on the bottom. Install black lead from your meter into the green and yellow block
**CAUTION** only hold the red test lead by the plastic portion near the wire lead. You are checking high voltage and high amperage and injury could result.
Locate the filter in the right of the of the control panel. It is labelled C100F
Test voltage of L1 to Ground
Test voltage of L2 to Ground
Test voltage of L3 to Ground
Test voltage of L1 to L2
Test voltage of L2 to L3
Test voltage of L1 to L3
The top button is the start button (line with horn icon)
The bottom button is the horn only
The top button is the swing brake
The bottom button is the rope reeving change button
The toggle switch is for erection and work mode (to the left is jib, right is mast, center is work)
The red button is the emergency stop (its spring loaded and should pop back up after being pushed)
Top series of buttons is hoist
2nd from the top is trolley
3rd is swing
4th is travel
Change the parameter in the slew drive to warning instead of fault.
Hoisting problems
Hoist
Hoist Stop
Checking working order of HUP Joysticks
This explanation is not correct. In order to test the switches and joysticks of the remote, you must do the following in order.