Instruction manual DXB heater
page 13
5.7 Measuring and adjusting oil pump pressure.
Key to the letters in figure
P1
: Pressure setting
P
: Manometer connection, 1/8"G pressure
S
: Suction line 1/8"G
V
: Manometer connection, 1/8"G vacuum
R
: Return line 1/8"G
H
: Filter
E
: Atomiser line 1/8"G
A
: Plug; with plug = open (single pipe system)
B
: Opening to access plug
Without plug = closed bypass (two pipe system)
1.
Switch the heater off, close the oil supply and open the body’s access panel.
2.
Unscrew the seal screw of the oil pump (P).
3.
Fit a manometer (0 -16 mbar) to the measuring nipple.
4.
Close the access panel, switch on the oil supply and switch on the heater.
5.
Start heating manually by pressing the button on the operation panel.
6.
Give the heater 5 minutes to warm up.
7.
Check that the oil pump corresponds with the nominal oil pump pressure (see
Specifications).
8.
Make a note of the value measured as a reference for the next measurement.
9.
If the oil pump pressure does not correspond with the prescribed value:
•
Turn the adjusting screw (P1) left or right until the manometer displays the prescribed
value.
•
Check again the oil pump pressure according to the steps above.
10. Switch the heater off.
11. Allow the heater to cool down, switch off the oil supply and open the access panel.
12. Remove the manometer, tighten the screw of the measuring nipple (P) and close the
access panel.
