Maintenance and care
multi X 2500
88
Maintenance item
Action
Maintenance interval
Sensor electrode (if using the measuring cell
"high sensitive")
Check filling level of internal electrolyte,
top up if required
Replace internal electrolyte
Weekly
As required
Auto-protection
assembly
(if using the multi-purpose combustion tube)
Check filters, replace if required
Every three months, replace if required:
if filter is sooted, soiled or torn
if sulfuric acid was drawn into the APB
after an emergency shutdown
Check pneumatic seal and replace if required
If gas escapes from pneumatic seal (audible
hiss)
10.2
Replace particle filters in the gas inlets
WARNING
Risk of explosion and fire when swapping the gas connections! Always connect the gas
lines correctly and set the required gas pressures.
The gas inlets "Ar" and "O
2
" on the rear of the multi X 2500 are equipped with a
particle filter. The particle filter must be replaced once the process gases can no longer
be set to the target value (check for messages in the software) and potential leaks
within the system have been excluded.
1.
Switch off the multi X 2500 and the chlorine module and pull the mains plug from
the connections.
2.
Cut the gas supply at the shut-off valve.
3.
Disconnect the chlorine module and the sample introduction module from the
multi X 2500 and carefully push them to the side to gain access to the rear of the
device.
4.
Pull the gas hose from the connection terminal on the rear panel of the
multi X 2500. When doing this, press the red ring.
5.
Unscrew the gas connections using a
13-mm open-end wrench.
