Commissioning / Operation; Pumps; Start - Up; Venting / Ventilation - Bühler technologies BWT B05 Bedienungs- Und Installationsanleitung

Bedienungs- und Installationsanleitung
Installation- and Operation Instruction
Öl / Wasserkühler BWT / oil / water cooler BWT

5 Commissioning / Operation

Before operation it must be checked that the operating data does not exceed the data indicated on the
marker's nameplate. Furthermore all bolted connections must be checked for tightness.
CAUTION
Hazard due to high pressure
Do not exceed the nominal pressure.
Install safety valves (pressure relief valves) to pumps that generate higher pressures.

5.1 Pumps

The pumps feeding the plate heat exchanger must be equipped with control valves. Pumps which generate
pressures higher than those specified for the unit must be equipped with safety valves. The pumps must
not suction air to preclude operating faults through water hammers.
5.2 Start – up
NOTE
!
Pressure surges should be avoided.
To avoid hydraulic shocks the pumps should be started up against closed valves. The valves in the supply
and the return lines should be opened slowly, if possible simultaneously, until the operating temperature is
reached.

5.3 Venting / Ventilation

During the filling process the unit must be vented through the vent valves installed in the piping. Plate heat
exchangers which are not vented to a sufficient degree do not achieve full performance because the
heating surface is covered by air. Furthermore the corrosion risk increases when air remains in the unit.

5.4 Shut - down

The two sides should be shut - down simultaneously and slowly. If this not possible the hot side should be
shut down first.
If the cooler is shut down for a long time it should be drained completely and cleaned. The should be
specially when there is a danger of frost and when aggressive media are involved.
All manuals and user guides at all-guides.com
BX340001, 10/2010 Art. Nr. 34001
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