Viessmann Vitoflame 100 Service Instructions Manual page 8

Commissioning, inspection, maintenance
Further details regarding the individual steps
Danfoss oil pump, type BFP 52
Suntec oil pump, type AT 2-55
8
(cont.)
01. Switch OFF the mains isolator and
safeguard against unauthorised
reconnection.
02. Unscrew plug "P" A from the oil
pump.
03. Unscrew plug "V" B from the oil
pump.
Note
This allows the oil to drain from the
oil pump.
04. Insert a pressure gauge (range 0 -
40 bar) and a vacuum gauge (range
0 - 1 bar).
Note
Seal in the pressure and vacuum
gauges only with copper or alumi-
nium gaskets or with O-rings. Never
use tape to seal these joints.
05. Start the burner.
Note
The solenoid valve opens.
06. Read off the oil and vacuum pres-
sures of the pump on the relevant
gauge (vacuum should be max.
0.35 bar given a height differential of
3 m between the oil pump and the
bottom of the tank).
Note
Where the vacuum measures
higher than 0.35 bar, check the filter
for contamination or check the pipe-
work.