12. Tighten the rotary handle clockwise.
13. Fit the housing again:
see "Weatherproof enclosure", page 13
5.6
Retrofitting the filter element
You can perform the work while the filter element is hot.
Pay attention to the warning about hot surfaces.
The filter can have an internal temperature of 185 °C.
WARNING
Risk of burns on hot surfaces
The filter element can reach high temperatures in operation.
b
Wear suitable gloves.
b
Provide a heat-resistant support.
WARNING
Hazard by toxic substances
Filter elements can contain toxic substances depending on the sample gas composi‐
tion.
b
Observe the relevant safety regulations.
b
Dispose of the filter elements in an environmentally compatible manner.
Procedure
1.
Switch off the fuse of the gas sampling unit in the measuring system.
The position of the fuse is described in the System Documentation enclosed with
the measuring system.
2.
Remove the enclosure:
see "Weatherproof enclosure", page 13
.
3.
Check all gas connections:
°
Optical condition
°
Tight seat
°
Leak tightness:
The leak tightness check is performed via the connected measuring system:
See the Operating Instructions of the measuring system.
Retrofitting the sintered metal filter element to a glass fiber filter element
1.
Loosen the rotary handle counterclockwise.
MAINTENANCE
5
8023849/14SF/V1-1/2019-07 | SICK
O P E R A T I N G I N S T R U C T I O N S | SFU
29
Subject to change without notice
