10.2.13 Checking The Gps Minimum Gas Pressure Switch; Specific Maintenance Work - DeDietrich C 330 Series Installation, User And Service Manual

Fig.73 Checking the Gps
1
P1
10 5/6/7/8/9
2 2
2
4
(+)
7
X mbar
10.3

Specific maintenance work

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10.2.13 Checking the Gps minimum gas pressure switch

1. Switch off the boiler.
2. Open the screw in measuring point 2 of the gas valve unit.
3. Connect a pressure gauge to measuring point 2 of the gas valve unit.
4. Turn on the boiler.
6
5. Set the boiler to low load.
6. Close the boiler gas valve very slowly until the boiler goes into
7. Make a note of the pressure indicated by the pressure gauge at that
Tab.40
C 330 ECO
280
350
430
500
570
2
650
3
P
2
3
≤ 10.0
AD-0000543-01
Perform the specific maintenance work if this proves to be necessary
following the standard inspection and maintenance work. To conduct the
specific maintenance work:
blocking mode.
Code B 15 BL.GAS PRESS/
point. Compare the measured values with the checking values in the
table. If the measured pressure is lower, set the gas pressure switch
to the correct value or replace it.
Minimum gas pressure switch value
10 Maintenance
; .
Minimum value (mbar)
14
13
10
10
10
10
65