85
Checking the diaphragm expansion vessel and system pressure
B
A
Fig. 80
Note
Carry out this test on a cold system.
The system must be shut down.
1.
Drain the heating water buffer cylinder until pres-
sure gauge
A
shows "0".
2.
Check the pre-charge pressure of the diaphragm
expansion vessel. Set value: 0.9 bar (0.09 MPa).
3.
If the charge pressure of the diaphragm expansion
vessel is lower than this, recharge with nitrogen via
connection
B
.
4.
Top up with water. Observe the specifications for fill
and top-up water; see page 55.
Operating pressure: 1.0 bar (0.1 MPa).
Commissioning, inspection, maintenance
2-yearly maintenance of fuel cell module
(cont.)
5775 636 GB
Содержание C3TB
Страница 44: ...44 3 5 1 2x 2 4 7 6 Fig 43 Installation sequence Fitting the front panels 5775 636 GB Installation ...
Страница 48: ...48 14 Fig 47 Installation sequence If required for easier handling Dismantling cont 5775 636 GB Installation ...
Страница 136: ...136 Troubleshooting Repairs gas condensing module cont 5775 636 GB Diagnosis ...
Страница 143: ...143 Parts lists Heat cell assembly 5775 636 GB Components ...
Страница 148: ...148 0001 0001 0003 0003 0002 0002 0004 Fig 118 Parts lists External connection assembly 5775 636 GB Components ...
Страница 154: ...154 0006 0003 0005 0001 0002 0004 Fig 121 Parts lists Miscellaneous assembly 5775 636 GB Components ...
Страница 160: ...160 Parts not shown 0009 PCB IU100 B30 Parts lists Fuel cell assembly 5775 636 GB Components ...
Страница 161: ...161 Parts lists Fuel cell assembly cont 5775 636 GB Components ...
Страница 187: ...187 5775 636 GB ...