Holmatro DPU31 - Troubleshooting Equipment Operation; Equipment Not Operating Properly; Quick-Action Couplings Connection

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10.2 The connected equipment is not operating - or not properly.
1 Check the pump hydraulic oil
level.

No or low hydraulic
fluid 
Add recommended
hydraulic fluid up
correct level.

Hydraulic fluid level correct
2
Check the coupler connections.

Incorrect or
incomplete coupling.

Reconnect
couplings

Couplings correct
3
Consult your Holmatro dealer

10.3 The quick-action couplings cannot be connected.
1
Check tool control handle
position

Handle in open or
close position

Release control
handle to neutral
position

Control handle in neutral
2
Check for pressure in the hose.

Hose pressurized, but
not pre-connected to
pump/tool.

Release pressure in
hose using
Pressure Relief
Device (PRD)

Hose pressure relieved
3
Check for pressure in the tool.

Tool pressurized, but
not pre- connected to
hose line

Release pressure in
tool using PRD

Hose pressure relieved
4
Check for pressure in the pump.

Pump pressurized but
not pre-connected to
hose

Turn off pump &
Consult your
Holmatro dealer

pump not pressurized
5
Check the coupling locking
sleeve location or dirt in coupler 
Incorrect position or
dirt in coupler 
Release locking
sleeve. Clean
coupler

Locking ring released/Coupler
clean
6
Consult your Holmatro dealer