Shutdown/Storage/Preservation; Returning To Service - Speck pumpen Normblock Installation & Operating Manual

6 Commissioning/Start-up/Shutdown
Symbol Description
T Fluid temperature
f
T Temperature at the casing surface
O
Pump efficiency at duty point
Temperature difference
6.2.3.2 Density of the fluid handled
The pump input power changes in proportion to the density of the fluid handled.
CAUTION
Impermissibly high density of the fluid pumped
Motor overload!
▷ Observe the information on density given in the order documentation.
▷ Make sure the motor has sufficient power reserves.
6.2.3.3 Abrasive fluids
Do not exceed the maximum permissible solids content specified in the order.
When the pump handles fluids containing abrasive substances, increased wear of the
hydraulic system and the shaft seal are to be expected. In this case, reduce the
commonly recommended inspection intervals.

6.3 Shutdown/storage/preservation

6.3.1 Measures to be taken for shutdown
The pump (set) remains installed
✓
Sufficient fluid is supplied for the operation check run of the pump.
1. Start up the pump (set) regularly between once a month and once every three
months for approximately five minutes during prolonged shutdown periods.
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
✓
The pump has been properly drained (⇨ Section 7.3 Page 38) and the safety
instructions for dismantling the pump have been observed. (⇨ Section 7.4.1
Page 38)
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 and discharge nozzles.
It is advisable to close the pump nozzles (e.g. with plastic caps or similar).
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 (⇨ Section 3.3 Page 13) .
If the pump set is to be stored temporarily, only preserve the wetted components
made of low-alloy materials. Commercially available preservatives can be used for
this purpose. Observe the manufacturer's instructions for application/removal.
Observe any additional instructions and information provided. (⇨ Section 3 Page 12)

6.4 Returning to service

For returning the pump to service, observe the sections on commissioning/start-up
(⇨ Section 6.1 Page 29) and the operating limits (⇨ Section 6.2 Page 31) .
In addition, carry out all servicing/maintenance operations before returning the
pump (set) to service. (⇨ Section 7 Page 35)
Normblock
Unit
°C
°C
-
K
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