6 Commissioning/Start-up/Shutdown
37 of 72
Sewatec (60 Hz)
6.2.3.3 Abrasive fluids
Do not exceed the maximum permissible solids content specified in the data sheet.
When the pump handles fluids containing abrasive substances, increased wear of the
hydraulic system and the shaft seal is to be expected. In this case, halve the intervals
commonly recommended for servicing and maintenance.
6.3 Shutdown/storage/preservation
Storing a new pump set
If commissioning is to take place some time after delivery, we recommend that the
following measures be taken for pump (set) storage:
▪
Store the pump (set) in a dry and protected location.
▪
If properly stored indoors, the pump set is protected for a maximum of 12
months.
New pumps/pump sets are supplied by our factory duly prepared for storage.
▪
Rotate the pump shaft by hand once a month.
The pump (set) remains installed
ü
Sufficient fluid is supplied for the operation check run of the pump.
1.
For prolonged shutdown periods, start up the pump set regularly between once
a month and once every three months for approximately five minutes.
ð
This will prevent the formation of deposits within the pump and the pump
intake area.
The pump (set) is removed from the pipe and stored
ü
The pump has been properly drained
(
ð
Section 7.3, Page 43)
ü
The safety instructions for dismantling the pump have been observed.
(
ð
Section 7.4.1, Page 44)
1.
Spray-coat the inside wall of the pump casing, and in particular the impeller
clearance areas, with a preservative.
2.
Spray the preservative through the suction nozzle and discharge nozzle.
It is advisable to then close the pump nozzles (e.g. with plastic caps).
3.
Oil or grease all exposed machined parts and surfaces of the pump (with
silicone-free oil and grease, food-approved if required) to protect them against
corrosion.
Observe the additional instructions on preservation.
6.4 Returning to service after storage
For returning the equipment to service observe the sections on commissioning/start-
up
(
ð
Section 6.1, Page 33)
and the operating limits .
In addition, carry out all servicing/maintenance operations before returning the
pump (set) to service.
(
ð
Section 7, Page 38)
WARNING
Failure to re-install or re-activate protective equipment/devices
Risk of personal injury from moving parts or escaping fluid!
▷
As soon as the work is completed, re-install and/or re-activate any safety-
relevant devices and protective devices.
NOTE
On pumps/pump sets older than 5 years we recommend replacing all elastomer
seals.
