The diaphragm is a wearing part, the service life of which is dependent on
the following parameters:
n
System back pressure
n
Operating temperature
n
Feed chemical properties
The diaphragm service life is reduced when using abrasive feed chemi‐
cals. In these cases, more frequent checking of the diaphragm is recom‐
mended.
Data
Value Unit
Tightening torque for screws:
7.5±0.5 Nm
WARNING!
Warning of eye injuries
When opening the relief valve, a spring under high ten‐
sion can jump out.
–
Wear protective glasses.
Draining gear oil
1
3
2
P_SI_0143_SW
Fig. 21
1.
Unscrew the vent screw (1).
2.
Place an oil trough under the oil drainage plug (2).
3.
Unscrew the oil drainage plug (2) from the power end housing.
4.
Allow the gear oil to drain out of the power end.
5.
Screw in the oil drainage plug (2) with a new seal.
Filling with gear oil
Requirement: Gear oil in line with the "Ordering information" chapter is
available.
1.
Slowly pour gear oil through the vent screw (1) opening until the oil
inspection window (3) is half covered.
2.
Allow the pump to run for 1... 2 minutes
3.
Replace the vent screw (1).
Check the condition of the metering dia‐
phragm
Tightening torques
Liquid ends with integral relief valve
Changing gear oil
Maintenance
49
Содержание Sigma / 2 Basic S2Ba
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