Hyd-Mech DM8 - General Machine Functioning Problems; Spindle Motor Not Working; Electropump is Not Working

Version 24DM
T roubleshooting 10--7
Troubleshooting
PROBLEM PROBABLE CAUSE SOLUTION
The main switch does not work
' Electrical supply .Check: phases, cables, plug, socket
' Minimum voltage relay .Check that it is correctly supplied
and not burnt out
The STAND BY LED does
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' LED burnt out .Replace
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' Electrical supply .Check: phases, cables, plug, socket
' Minimum voltage relay .Check that it is correctly supplied
and not burnt out
' Transformer supply .Check transfor m er input f uses 1 and 2
.Check transformer 24 V secondary
output
.Check 24V output fuse
Spindle motor not working
' Electrical supply .Check: phases, cables, plug, socket
.Check motor connections are all in
place
' Motor contactor .Check input and output phases and
check whether when supplying A1
and A2 relay the contactor closes.
' Polarity change switch .Check input and output phases
' Head control lever microswitch .Check that it is functioning; if broken,
replace
' Blade tensioning .If the blade is not correctly tensioned
to 60 Bar, the pressure contact does
not close and the machine is in
EMERGENCY state
' Blade protection cover .Check that the closure is correct and
the limit stop pressed
' Current drop .Check connections on the handgrip
switch, the blade protection limiter
and the pressure gauge on the blade
tensioner group
MVR
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' Electrical supply .Check: phases, cables, plug, socket
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' Emergency state active .Check that the emergency button is
out: to unlock, rotate by 1/4 of a full
turn in clockwise direction
Electropump is not working
' Electrical supply .Check: phases, cables, plug, socket
and fuse no. 5 in the electrical plant
' No--return valve .Clean, if blocked replace
' Filter .Clean