KSB Magnochem-Bloc, Installation & Operating Manual

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6 Commissioning/Start-up/Shutdown
34 of 96
Magnochem-Bloc
NOTE
The rate of external fluid supply should not fall below approx. 10 l/min. This
corresponds to a supply pressure of approx. 0.5 bar above the system pressure.
2. Open the shut-off element for external fluid supply (2); minimum rate of fluid
supply: 10 l/min.
ð The rotor space will prime and vent.
3. Fully open the suction-side valve (1).
4. Slightly open the shut-off element (3) in the discharge line.
NOTE
Once the pump has been started, circulation through the external circulation line
(a) will be ensured. The external fluid supply line (b) can be shut off.
6.1.3 Cooling water supply of heat exchanger (for dead-end configuration only)
A heat exchanger is required for dead-end configuration operating mode. The heat
exchanger serves to dissipate the heat developing in the rotor space. The fluid
handled or the external fluid from the rotor space transfer the heat to the cooling
water in the heat exchanger.
DANGER
Insufficient cooling water supply to heat exchanger
Excessive temperatures!
Explosion hazard!
▷ Monitor the flow in the cooling circuit.
▷ Protect the cooling water from freezing.
▷
Use a temperature monitoring device at the containment shroud
CAUTION
Deposit-forming, aggressive cooling water
Damage to the pump set!
Damage to the heat exchanger!
▷
Observe the quality data for cooling water.
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
Observe the application limits of the heat exchanger (see heat exchanger name
plate).
6.1.4 Heating
The pump can also be heated, if necessary. The volute casing and the casing cover
have heating chambers. The heating chambers can be heated with hot water, steam
or thermal oil.