6 Commissioning/Start-up/Shutdown
40 of 80
HPK
1121.8/06-EN
6.1.4 Priming and venting the pump
DANGER
Risk of potentially explosive atmosphere by incompatible fluids mixing in the
auxiliary piping
Risk of burns!
Explosion hazard!
▷ Make sure that the barrier fluid or quench liquid are compatible with the fluid
handled.
DANGER
Risk of potentially explosive atmosphere inside the pump
Explosion hazard!
▷ The pump internals in contact with the fluid to be handled, including the seal
chamber and auxiliary systems, must be filled with the fluid to be handled at all
times.
▷ Provide sufficient inlet pressure.
▷ Provide an appropriate monitoring system.
DANGER
Shaft seal failure caused by insufficient lubrication
Hot or toxic fluid could escape!
Damage to the pump!
▷ Before starting up the pump set, vent the pump and suction line and prime
both with the fluid to be handled.
1. Vent the pump and suction line and prime both with the fluid to be handled.
2. Fully open the shut-off element in the suction line.
3. Fully open all auxiliary connections (barrier fluid, flushing liquid, etc).
6.1.5 Water cooling
CAUTION
Deposit-forming, aggressive cooling water
Damage to the pump!
▷ Observe the cooling water quality.
Observe the following quality data of the cooling water:
▪ Not deposit forming
▪ Not aggressive
▪ Free from suspended solids
▪ Hardness on average 5 °dH (~1 mmol/l)
▪ pH > 8
▪ Conditioned and neutral with regard to mechanical corrosion
▪ Inlet temperature t
E
= 10 to 30 °C
6)
Outlet temperature t
A
= maximum 45 °C
6)
6
Higher temperatures may be permitted for systems using treated cooling water
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