ProMinent Beta BT4b Operating Instructions Manual page 38

Repairs
Cleaning a discharge valve or a suction
valve on types (PP, PV, NP) 1000, 1601,
1602, 1604, 2504
Cleaning a discharge valve or a suction
valve on types (PP, PV, NP) 0708, 1008,
0220, 0420, 0413, 0713, 0232
38
Warning of faulty operation
Discharge and suction valves differ from each other!
–
Only take them apart one after each other, so that you
do not confuse the components!
Only use new components which fit your valve - both in
–
terms of shape and chemical resistance!
Recalibrate the pump after replacing a valve!
–
Using an Allen key or similar, insert it into the smaller
–
hole of the discharge connector and push the valve
inserts out of it.
A suction valve is constructed in almost the same way as a discharge
valve.
Please note, however, that:
the two valve inserts are identical here
n
There is an additional spacer between the valve inserts.
n
There is a shaped seal in the dosing head instead of an O-ring.
n
The flow direction of the suction connector is the opposite of that of
n
the discharge connector.
Warning of faulty operation
Discharge and suction valves differ from each other!
–
Only take them apart one after each other, so that you
do not confuse the components!
Only use new components which fit your valve - both in
–
terms of shape and chemical resistance!
On the PVT material version, the ball seat is integrated
–
in the dosing head and so has to be cleaned separately!
On the PVT material version, the discharge valve is a
–
double ball valve!
Using an Allen key or similar, insert it into the smaller
–
hole of the discharge connector and push the valve
inserts out of it.
A suction valve is constructed in almost the same way as a discharge
valve.
Please note, however, that:
The flow direction of the suction connector is the opposite of that of
n
the discharge connector.