Commissioning - Wolf KG Standard Installation And Maintenance Instructions Manual

Cooler
(direct evaporator)
Scrubber
Blow-down valve assembly
(on request)
3040530_201503

Commissioning

Before filling the refrigerant circuit with refrigerant, take suitable steps to ensure
that no residual moisture remains in the pipework system (e.g. evacuate or
purge with dry nitrogen).
Check the discharge temperature and evaporation temperature: minimum
temperature +2 °C. If the discharge temperature and refrigerant temperatures
are below +2 °C, there is a risk that the heat exchanger will freeze and the
downstream frost protection will respond.
The output for the direct evaporator can only be achieved if the refrigerant used
Please note
is the one on which the design is based (R134a).
Never allow refrigerant to escape into the environment as this creates a risk of
environmental pollution. Use a suitable suction device.
- Check pipework and pump for leaks.
- Check that the nozzle holder and nozzles are firmly seated.
- Check that the siphon drain is unrestricted.
- Fill the siphon with water.
- Fill the scrubber pan until water drains from the siphon.
- To check the rotational direction, briefly start the scrubber pump and
correct the rotational direction if required.
Check the power consumption of the pump motor.
Never let the scrubber pump run dry.
Please note
Running dry can destroy the pump.
- Start the supply air fan.
- Start the scrubber pump.
- Adjust the float: Water level in the pan at least 10 mm above the pump
intake; maximum 10 mm below the overflow outlet.
- If installed, adjust the run-dry protection and automatic desalination device
(as explained in separately supplied instructions).
Note:
Adjust the blow-down volume at the manual valve.
(This blow-down volume depends on the water hardness and the dust content
in the air. As a rule of thumb, assume twice the evaporated water volume.)
Mist eliminators allow moisture through for a limited time due to
their surface structure, resulting from their manufacturing process.
This is not a technical fault.
17