Repairing The Diaphragm Rupture Sensor - ProMinent Hydro 2 Series Operating Instructions Manual

Repair
Tightening torque for screws
10.3

Repairing the diaphragm rupture sensor

30 V version
64
Dosing head material
PVT
TTT
HCT
SST
Fill hydraulic oil in the hydraulic end
For the double head versions, perform the following work simultaneously
on both dosing heads.
1. Set the stroke adjustment dial (1) to "100%" and open the safety
relief valve (2) - tighten the knurled screw.
2. Slowly fill hydraulic oil through the opening for the gearbox vent
stopper (4) until the oil inspection window (3) is covered to 1/3.
3. Start the pump.
4. Allow the pump to run for 1... 2 minutes.
5. Screw the gearbox vent stopper (3) back in. Do not close the bleed
valve!
6. Close the safety relief valve (1) - loosen the knurled screw.
7. Check the pump for tightness by using maximum back pressure.
WARNING!
Only in areas at risk from explosion: Check after 1 day
whether the oil drainage stopper (4) and the oil drainage
plug (5) are still tight.
Check the starting torque of the dosing head screws
again after 24-hours of operation!
WARNING!
Feed chemical warning
After a diaphragm rupture, additional feed chemical will
be present in the diaphragm rupture sensor and the feed
channel in the dosing head.
– Protect yourself from the feed chemical if using haz‐
ardous or unknown feed chemicals. Observe the
material safety data sheet.
Check diaphragm rupture sensor
1st level 2nd level
6 Nm 12 Nm
6 Nm 12 Nm
8 Nm 20 Nm
8 Nm 20 Nm