EKOM DK50 4VR/50, Installation, Operation And Maintenance Manual

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DK50 4VR/50
NP-DK50 4VR50-11_04-2018 - 20 - 04/2018
OPERATION
In case of emergency, disconnect the compressor from the mains (pull out the mains
plug).
The compressor has hot surfaces.
Burns or fire may result if contact is made.
During prolonged operation of the compressor, the temperature in the box may increase
to over 40°C. At this point the cooling fan automatically switches on. After cooling the
space to under 32°C, the ventilator switches off.
Automatic start: when pressure in the tank drops to the pressure switch’s lower limit
level, the compressor automatically switches on.
The compressor automatically
switches off after reaching the pressure switch’s upper limit level.
Compressor with dryer
A correct function of the drier depends on the compressor’s operation and no attendance is required. The
pressure vessel need not be sludged, because the pressure air entering the air chamber is already dried.
- It is forbidden to alter the working pressures of pressure switch set by manufacturer. The operation
of the compressor at working pressure lower than the switching pressure demonstrates the overload
of the compressor (high air consumption) by the appliance, leakages in pneumatic distributions,
failure of aggregate or drier.
- Prior connecting drier to air chamber, that was used with compressor without drier, it is necessary to
clean interior surface of air chamber and perfectly remove condensed liquid. Then interconnect
electric part of drier with compressor according to wiring diagram in accord with valid regional
regulations.
Required drying performance can only be achieved when following the defined operating
conditions!
Drying performance will decline and the achieved dew point will drop if the dryer is
operated at any pressure below the minimum working pressure!
Dryer operation at a pressure of 0.5 Bar below the minimum working pressure can lower
the dew point at the outlet by more than 10°C!
The dryer will be irrevocably damaged and need replacement if operated at any
temperature above the maximum working temperature
13. SWITCHING THE COMPRESSOR ON
(Fig.9)
Switch on the compressor at the pressure switch (2) by turning the
knob (3) to position “I.” (for compressor in the box switch (26) Fig.4), on
the front part of the compressor box), The compressor sends
pressurized air to the air tank. As the compressed air is used, the
pressure in the air nozzle drops to a preset level, the compressor
switches on and the air nozzle files with compressed air. After
reaching the cutoff pressure the compressor turns off automatically and
the cycle is repeated. Check the value of switching-on and switching-
off pressure on pressure gauge. The values may be within a tolerance
of

10%. Air pressure in air chamber must not exceed maximal
permitted operation pressure.
Never tamper with the pressure switch (2). Adjustments are not allowed. The pressure
switch (2) has been set by the manufacturer and further setting of switching on and off
pressure may be carried out only by a qualified expert trained by the manufacturer.
Fig
.9
3
5
2
1
4
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