Danfoss ET4500-001, Operator'S Manual

Page: 57 / 84

7 Troubleshooting
Error Cause Remedy
Machine does not close/open Main switch is OFF Switch on the main switch
Voltage incorrect Check voltage supply
Power plug defective Check power plug and replace
if necessary
Rotational direction of electric
motor incorrect Check rotation direction, cor-
rect electrical connection
Phase applied to neutral
conductor Check power plug, correct
electrical connection
Insufficient amount of hydrau-
lic oil Refill oil
Power unit defective Check power unit
Operation buttons defective Check operation buttons and
replace, if required
Machine forms unevenly/coni-
cally Bearing plates worn Check bearing plates for wear
and replace if necessary
Base dies damaged Check base dies for damage
and replace if necessary
Crimping dies damaged Check crimping dies for da-
mage and replace if necessary
Crimping area not centred Preferably form the work piece
in the centre of the crimping
die length
Crimping dimension not achie-
ved Bearing plates worn Check bearing plates for wear
and replace if necessary
Oil pressure too low
Check oil pressure at the MP
measuring point, pump or pipe
may be leaking or defective,
repair or replace
Incorrect crimping dies used Check crimping die diameter
and crimping die section and
replace, if required (for crimp-
ing die section, please refer to
“Technical data” in Section 3)