Wolf KG - Direct-Expansion Evaporator Commissioning; Scrubber Commissioning; Contact Humidifier Commissioning

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3062049_201610
KG Top
Scrubber - Check all pipes and the pump for leaks.
- Checkthatthenozzleassemblyandthenozzlesaresecure.
- Ensure that the siphon drain is unobstructed.
- Fill the siphon with water.
- Fill the scrubber tray until water drains off through the siphon.
- Brieystartthemotortocheckthescrubberpumpdirectionofrotation;ifrequired
correct the direction of rotation.
Check the power consumption of the pump motor.
 Neverpermitthescrubberpumptorundry.
 Thepumpcansufferirreparabledamageifitrunsdry.
- Switch on the air intake fan
- Switch on the scrubber pump
- Adjusttheoat:Traywaterlevelatleast10mmabovethepumpintake,max.10mm
belowtheoverowoutlet
- If installed: adjust dry run protection and automatic T.D.S. (in accordance with separate
instructions supplied)
Note: On account of their production-related surface structure, mist eliminators are
subject to disruptive discharges for a limited time.
This is not an engineering defect.
Note
Commissioning
Beforellingtherefrigerantsystemwithrefrigerant,takesuitablemeasurestoensure
that no traces of residual moisture remain in the pipework (e.g. evacuate or purge the
pipework with dry nitrogen).
Checkevaporationtemperature:min.evaporationtemperature+2°C;iftheevaporation
temperatureis<+2°Cthereisariskoficeformingonthensoftheheatexchanger
obstructingorpreventingtheairow.
The direct-expansion evaporator will be unable to achieve its rated performance unless
the refrigerant used is the same as that on which the design was based (R22 or R134a).
Never permit refrigerant to escape to the environment, as otherwise there is a risk of
environmental pollution. Use a vacuum extractor of suitable design.
Note
Cooling coil
(direct-expansion evaporator)
Contacthumidier
Tomaximisetheservicelifeofthehumidiermedium,notethefollowing:
- adequate supply of circulating water (approx. 3 x evaporated volume)
- permanent humidifying of the entire surface
- airtemperature,watertemperature<40°C
- always clean in good time
- operate only with fresh water (clear in appearance, without sediment).
Changingthehumidiermedium:
Removal and installation through the inspection door:
- remove the cover plate
- removethehumidiermedium
- install new blocks.
Takecaretoinstallthehumidiermediumrightwayroundasotherwisemistwillbe
entrainedinthe airowand thehumidier performance willfall signicantlyshort of
requirements.
Note
- Checkthecoldwatertemperature:min.coldwatertemperature+2°C;
 iftheevaporationtemperatureis<+2°Cthereisariskoficeformingontheheat
exchangernswhichwouldobstructorpreventtheairow.
Antifreezeagentsarehazardoustohealth.Alwayscomplywiththesafetyinstructions
issuedbythemanufactureroftheantifreezeusedonsite.