Miller ENPAK, Руководство пользователя

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OM-261050 Page 58
Trouble Remedy
Oil in compressor air cleaner. Have Factory Authorized Service Agent check for blocked separator scavenge check valve/filter orifice.
Have Factory Authorized Service Agent verify compressor intake valve P-IC is operating properly.
Water in compressor oil. Change oil and filter. Use only recommended oil.
Have Factory Authorized Service Agent check thermostat operation.
12-4. Hydraulic Troubleshooting (Models With Hydraulic Power Source)
Trouble Remedy
No crane operation. No oil in system. Add oil.
Suction line valve closed. Open valve.
Hydraulic system not primed. Prime system (see Section 7-3). Check reservoir height meets require-
ments (see Section 7-1).
Flow control valve H
− FC1 not functioning. Check to make sure solenoid is plugged in. Check wiring
harness to solenoid coil. Have Factory Authorized Service agent check solenoid coil.
Flow control valve H
− FC1 plugged with contaminants. Replace valve and flush system.
Belt to pump failed. Replace belt.
Tensioner for belt to pump failed. Replace tensioner.
Pulleys for pump failed. Replace pulleys and/or keys.
Slow crane operation; unit comes up to
higher speed. Other functions in use and unit is power − managing. Unit functioning correctly.
Flow control valve H − FC1 is partially plugged with contaminates causing higher pressure drop across
the valve. Replace valve and flush system.
Have Factory Authorized Service Agent check hydraulic flow rate setting and correct as necessary.
Differential pressure setting of pump (load sense) set too low. Have Factory Authorized Service Agent
check setting and correct as necessary.
Displacement setting of pump set too low. Have Factory Authorized Service Agent check setting and
correct as necessary.
Check crane model hydraulic requirements. Pump may need to be reset (consult Factory Authorized
Service Agent).
Flow being dumped through crane relief valve instead of being directed to system, possibly caused by
system contamination. See crane manufacturer’s owners manual.
Hydraulic oil viscosity too high. See Section 7-1 for correct fluid viscosity recommendations at specif-
ic ambient temperatures.
Slow crane operation; unit remains at
low speed with crane switch in high
speed position. Open − Center systems: No trigger signal from crane pendant present. Have Factory Authorized Ser-
vice Agent check for trigger signal.
Closed − Center systems: Pressure switch H − PS1 not functioning . Have Factory Authorized Service
Agent check pressure switch and replace as necessary.
Slow response for unit to come up to
higher speed (Closed
− Center sys-
tems).
Air trapped in load sense line. Bleed load sense line according to Section 7-6.
Fast crane operation. Differential pressure setting of pump (load sense) set too high. Have Factory Authorized Service
Agent check setting and correct as necessary.
Displacement setting of pump set too high. Have Factory Authorized Service Agent check setting and
correct as necessary.
Check crane model hydraulic requirements. Pump flow may need to be reset (consult Factory
Authorized Service Agent).
Have Factory Authorized Service Agent check hydraulic flow rate setting and correct as necessary.
Hydraulic oil viscosity too low. Consult Section 7-1 for correct fluid viscosity recommendations at
specific ambient temperatures.