LEYBOLD MAG Series - Page 99

GA05141_0702 - 09/2004
99
Troubleshooting
Failure Message on
Display
Cooling Temp. SC
The cooling water temperatu-
re sensor reads a temperatu-
re lower than 1 °C.
Operating Cycles
The registered number of
start and stand-by cycles
exceeds the permissible
alarm limit during system
start. The system can no lon-
ger be started.
The registered number of
start and stand-by cycles has
reached the pre-set alarm
limit. The system is automati-
cally shut down and can the-
reafter no longer be started.
Operating Hours
The number of operating
hours of the pump has rea-
ched the pre-set alarm limit
during system start. The
system can no longer be
started.
The number of operating
hours of the pump has rea-
ched the pre-set alarm limit.
The system is automatically
shut down and can thereafter
no longer be started.
! Firmware Update !
This failure message is
displayed directly after swit-
ching on the mains. The
system cannot be started.
Measures
Measure the resistance between pins 1 and
3of the cooling water temperature sensor.
Contact Leybold if the resistance of the sensor
is under 100 Ω.
See Figure on the next page for position of the
sensor.
Have the pump serviced.
Have the pump serviced.
Have the converter software updated.
Possible Cause
Temperature sensor Pt 100 short-circui-
ted.
Intensive utilisation of the standby mode
or a high number of starting processes.
The alarm is only active provided the
menu item "Operating Hours/Cycles” was
changed to "Alarm”.
The number of operating hours of the
system has reached the level necessary
for servicing.
The alarm is only active provided the
menu item "Operating Hours/Cycles” was
changed to Alarm.
A new converter software version is
required for operation of the pump.