7
Fig. 2
Oil pump make: Danfoss
Fig. 3
Oil pump make: Suntec
0
1.
Switch system OFF at mains isolator and safe-
guard against unauthorised reconnection.
0
2.
Unscrew plug "P"
A
from the oil pump.
0
3.
Unscrew plug "V"
B
from the oil pump.
Note
Oil may leak from the oil pump when doing this.
0
4.
Insert a pressure gauge (measuring range 0 -
40 bar) and a vacuum gauge (measuring range 0 -
1 bar).
Note
Only seal in the pressure and vacuum gauges with
copper or aluminium gaskets or with O-rings.
Never use sealing tape.
0
5.
Start the burner.
Note
The solenoid valve opens.
0
6.
Read off the oil pressure and the vacuum of the
pump on the relevant gauge (vacuum should be
max. 0.35 bar at a height differential of 3 m
between the oil pump and the bottom of the tank).
Note
If the vacuum pressure is higher than 0.35 bar,
check the filter for contamination and check the
pipe run.
E
Fig. 4
0
7.
Should the CO
2
value fall outside the range of 13
to 14 % by vol., adjust the CO
2
value by regulating
the oil pressure.
Note
Subject to pump type, the pressure adjusting
screws may be located at the front or on the side
of the oil pump.
■
For burner stage 2, set the oil pressure at pres-
sure adjusting screw
D
. The service switch
E
is factory-set to setting 2.
■
For burner stage 1, set service switch
E
to set-
ting 1; open the flap to do so. Adjust the oil pres-
sure by means of pressure adjusting screw
C
.
Clockwise turn
→
pressure increases.
Anti-clockwise turn
→
pressure decreases.
Note
For standard values for burner settings, see page.
Commissioning, inspection, maintenance
Checking the oil pressure and vacuum , adjusting…
(cont.)
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