5
Maintenance
5.1
Important Information
WARNING
Risk of injury by a heavy load
The weatherproof enclosure including the sampling system with flange weighs
approx. 30 kg.
b
Use proper lifting techniques to lift or move the device.
b
Lift the unit by the enclosure. If necessary, remove the cover in order to grip the
device better and reduce the weight.
b
Always work in pairs.
WARNING
Health risk through dangerous sample gas
If dangerous sample gas is applied to the SFU: The operator is responsible for safe han‐
dling of sample gas.
b
In addition to these Operating Instructions, observe all local laws, technical rules,
and company-internal instructions valid at the site where the SFU is installed.
b
Operate the SFU only in rooms with adequate installation OR install suitable gas
monitoring equipment.
b
Channel sample gas off safely.
WARNING
Hazard through sample gas pressure
The stacks can have underpressure or overpressure.
b
Observe information from the plant operator.
WARNING
Risk of burns on hot surfaces
Filter housing, flanges and sample gas line can be hot.
b
Allow the surface of the device parts to cool down to body temperature or wear
suitable protective gloves.
WARNING
Danger to life by electric voltage
b
Only allow an authorized electrician to work on the electric system.
5.2
Maintenance plan
No.
Maintenance work
Reference
Interval
W1
Replace sintered metal filter element
and seals
see "Replacing the sintered metal
filter element", page 23
3M
1
W2
Replace glass fiber filter element
and seals
see "Replacing the glass fiber filter
element", page 26
3M
1
W3
Check gas connections
see "Checking for correct operation",
page 32
3M
1
1
3M = every 3 months
5
MAINTENANCE
22
O P E R A T I N G I N S T R U C T I O N S | SFU
8023849/14SF/V1-1/2019-07 | SICK
Subject to change without notice
