Multi-layer diaphragm pump
Serie 409.2 ML
Operating instruction
30
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Technical modifications reserved!
TA 431
Rev.
8 en
06/2015
Assemble the pump in reversed order
•
Insert the new O-Ring into the base ring
•
The new multi-layer diaphragm is screwed in the connect-
ing rod until it stops. If the holes in the diaphragm are not
congruent with the threaded holes in the base ring, then
the diaphragm must again be screwed out until it is con-
gruent with the threaded holes.
•
Diaphragm central position should be equal to a stroke
length of 50%; this can for example be achieved by turn-
ing the motor fan.
Multi-layer diaphragm
Base ring
Connecting rod
O-Ring
Fig. 38
•
Screw on the pump body (tightening torques are men-
tioned in Chapter 8.1)
When assembling the pump body, please note:
suction valve below, pressure valve above!
Pump body
Pressure valve
Ventilation joint
Suction valve
Fig. 39
•
Connect the signal devices.
Signal device
(Manometer)
Pump body
Suction valve
Fig. 40
Before reactivating the pump after a diaphragm replacement,
remove the air between the diaphragm layers. Proceed as fol-
lows:
a) diaphragm rupture signalization by manometer or
pressure switch
•
Screw out the signal device
•
Apply delivery pressure and have the pump run for a
short period (30s)
•
Switch off the pump
•
Screw in the signal device (see Fig. 40)
.
Содержание 409.2 ML Series
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