14.1.1 Replacing the vPTFE diaphragm
The vPTFE diaphragm (full PTFE diaphragm) is replaced in the
same way as the standard diaphragm.
A fitted vPTFE diaphragm needs to be replaced
once the dosing head screws have been loosened,
as the pump will otherwise no longer be tight.
A spare parts kit contains:
n vPTFE diaphragms
n Suction valve
n Discharge valve
n Valve ball
n Sealing set
n Connector kit
n Seal
Pump type 2.0 diaphragm com‐
plete
2.0 spare parts kit PVM 2.0 spare parts kit PVN
1602 (1002) 1118690 1118461 1118460
1604 (1004) 1117351 1118462 1118454
0708 1117350 1118458 1118456
1009 1117350 1118458 1118456
0715 1117354 1118463 1118457
0414 1117354 1118463 1118457
0220 1117352 1118459 1118464
0424 1117352 1118459 1118464
0245 1117353 1118455 not available
14.2 Cleaning the diaphragm rupture indicator
After the diaphragm rupture indicator has been triggered, any res‐
idue of feed chemical may affect its function.
n After the diaphragm rupture indicator has been triggered, clean
and test it.
1. First replace the liquid end diaphragm.
2. Unscrew the diaphragm rupture indicator using an AF 14
open-ended spanner.
3. Clean the diaphragm rupture indicator with suitable liquid - if
possible using water (polysulphone material).
4. Test the connected diaphragm rupture indicator: fully
immerse the tapered section at the front in water.
ð
The continuous display indicates a diaphragm rupture.
Spare parts for the vPTFE diaphragm
Repair
103
DosingPump.ir
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