PROBLEM 10
Load drum will not lower load, but will raise load.
POSSIBLE CAUSES
Control handle is worn; minimum bail limit opened; pump is damaged;
speed sender is damaged.
CHECKS
When applicable switch or handle is enabled are the following displayed:
Drum 1 minimum bail limit fault
Drum 2 minimum bail limit fault
Drum 3 minimum bail limit fault
Drum 1 pump control - lower, no increase in system pressure
Drum 2 pump control - lower, no increase in system pressure
Drum 3 pump control - lower, no increase in system pressure
Drum 3 pawl in fault
Does drum Diagnostic screen show 100% handle
command with handle moved forward?
Check for problem. Repair limit
switch, wiring, or circuit breaker.
Does drum Diagnostic screen show 100% pump
control with handle moved forward?
Consult dealer/factory.
Are 24 volts present (full speed) at pump EDC with handle moved
back? (See Section 3 - Checking Electrical Inputs/Outputs.)
Replace EDC or
replace pump.
Repair or replace wiring or
consult dealer/factory.
Yes No
Yes No
Yes No
Replace control handle or repair wiring.
Any of the above displayed
None of the above displayed
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