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HD 4000 C / HD 6000 C
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5.956-648 A10369 (06/98)
F. Trouble Shooting
F3
Motor fault lights up
Motor protection switch
Q1 or Q2 has triggered
owing to overcurrent or
drop-out of one phase
of power supply
system
Check voltage of the three
phases
Customer
Service/
Electrician
Motor protection switch
falsely set
Set in accordance with
circuit diagram
Customer
Service/
Electrician
Pressure at pump
outlet too high
Check pressure, adjust as
necessary
Customer
Service
Available time is less than
6 hours
Site high-pressure
network is leaky
Seal it off Operator
Pressure switch
defective
Replace Kundendienst
System does not start up
when unlock button is
pressed, no indicator light
illuminates
Site power supply
interrupted
switch on Operator
Emergency-STOP
master switch off
switch on Operator
Motor protection switch
for control system and
precompression pump
has been triggered
check Customer
Service /
Electrician
Control-circuit fuse on
transformer defective
replace, check cause Customer
Service /
Electrician
Printed circuit board
defective, green LED
does not blink
replace, check Customer
Service
EPROM loose install again, check cause Customer
Service /
Electrician