PRODUCT MAINTENANCE
10/2022 55 NP-DK50 2V-A-4_10-2022-AD
Risk of injury when compressed air is vented.
Protect your eyesight when checking the safety valve – wear protective goggles.
22.7. Inlet filter and pre-filter replacement
The inlet filter (1) is located inside the compressor crankcase
cover
Pull out the rubber plug (2) by hand.
Remove the dirty inlet filter (1).
Insert a new filter and mount the rubber plug.
Fig. 20: Inlet filter replacement
Pull out the pre-filter by hand (3)
Replace the element and re-insert
Fig. 21: Inlet pre-filter replacement
22.8. Check of fan and cooler
The entire device and especially the compressor fan, cooler fan and cooler must be kept clean (Fig.
1) – vacuum or blown down the cooling fins and fans with compressed air to remove any dust from
the surface.
22.9. Dew point sensor calibration
It is recommended to calibrate the dew point sensor every 2 years on compressors equipped with
this sensor. Calibration is performed by the manufacturer (Vaisala) and must be ordered online.
Sensor calibration ordering process:
Visit the website www.vaisala.com, and then navigate to the Services section and select
Calibration and repair services.
Then enter the type of sensor (sensor type: DMT143) and select a calibration type, then
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