GAA610-M
ADVANCED EMISSION GAS MONITORING SYSTEM | OI/GAA610-M-EN REV. B
79
Replacing the filter element in the filter unit
CAUTION
Danger of burns
Danger of burns on the hot measuring probe.
• Switch off the power supply to the probe heater.
• Allow the measuring probe to cool down.
• Wear suitable protective gloves.
• Carefully open the weather protection case.
1
Filter housing
2
Filter holder
3
Filter retainer
4
Brige
5
T-handle
Figure 41: Filter unit without cover
1. Turn off power supply to the probe heater
(–F63)
.
2. Activate the ‘Maintenance Mode’ on the control panel.
3. Open the cover of the filter unit.
4. Turn the T-handle counter-clockwise direction.
– This pulls the filter holder via the filter retainer out of the
filter housing.
1
Bridge
2
Filter element
Figure 42: Remove filter element
5. Turn the bridge clockwise
A
.
6. Pull out filter element
B
.
1
Filter holding screw
2
Filter element
3
Gasket (2×)
4
O-ring (small)
5
O-ring (big)
Figure 43: Demount filter holder
7. Unscrew filter holding screw to remove the filter element.
– A number 14 wrench may be used to loosen the screw
8. Exchange the O-rings and the gaskets.
