©
HDG Bavaria GmbH 07/2008
HDG M299/300/350/400 - Version 1 - en
7 Cleaning and servicing the heating system – Procedure
145
7.
Mount the upper cladding (1) in the reverse sequence.
8.
Deactivate the maintenance function.
✎
See section “Maintenance function” in this chapter.
✓
The cleaning of the vacuum pressure pipe for the pressure
switches is completed.
C
LEANING
THE
VACUUM
PRESSURE
PIPE
FOR
THE
DIFFERENTIAL
PRESSURE
TRANSMITTERS
1.
Activate the maintenance function.
✎
See section “Maintenance function” in this chapter.
2.
Allow the fire in the heating system to burn out and cool down.
3.
Take the cladding (2) off toward the front.
4.
Detach the hose from the vacuum pressure pipe (1).
5.
Inspect the vacuum pressure pipe (1) for dirt and dislodge it if nec-
essary with a wire or a compressor.
6.
Attach the hose to the vacuum pressure pipe (1).
7.
Mount the cladding (2) in the reverse sequence.
8.
Deactivate the maintenance function.
✎
See section “Maintenance function” in this chapter.
✓
The cleaning of the vacuum pressure pipe for the differential
pressure transmitters is completed.
Important!
✎
Observe the “Generally applicable safety instructions” in this
section.
Figure 7/14 - Cleaning the vacuum pressure pipe for the differential pressure
transmitters
1
2
Summary of Contents for M299
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