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Carrying out maintenance
NOTE
10
Pump head maintenance message
The effective runtime of the pump head is counted during operation.
After 150 hours of operation, the LED E4 flashes with the mainte-
nance message for the pump head. This runtime for the pump will be
reached during normal operation (analysis interval every 10 min.)
after approx. 2 years or 54000 analyses.
Switch off the instrument to acknowledge the message.
Press and hold key 4 (horn) when switching on the instrument.
The operating time of the pump head is then reset to 0.
Replacing the pump head
To replace the pump head proceed as follows:
Switch the instrument off.
Pull the hoses off both hose connectors
Loosen the two screws
head off the motor shaft.
To install the new pump head, carry out the steps in reverse se-
quence.
Only connect the long hose with the indicator bottle. The short
hose is required for comparison.
Press key 4 (horn) and keep it pressed while switching on.
Bleed the indicator pipes before carrying out further analyses.
Twist protection
Pay attention to the twist protection on the motor shaft and the
pump head! The locating lugs on the pump head should engage
with the holes provided in the housing so that the long end of the
hose points towards the right.
.
at the pump head
and pull the pump
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