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6.5 Add fresh air (option)
Ø
The series AP is fitted with an aperture for additional air. (Figure 5.1 - Pos. 7)
Ø
With the help of a flange D= 100 mm (optional accessories, article no. 6109-
0020) fresh air can be added over this opening. In addition an appropriate wall
opening (D = 80 mm) is to be created behind the equipment, over which fresh
air will then be sucked from outside
6.6 Putting into operation
Ø
After a transport and the installation the dryer should rest in it´s final position for
approx 15 minutes. During this period of time, the oil inside the refrigerating
system, that was foamed during transport will return into the compressor. We
recommend this procedure since it extends the service life of the compressor.
Ø
If the dryer has been installed correct, it should start automatically with hygrostat
in Pos. I and On-/Off-switch in pos. I (figure 5.3). First the compressor starts and
after a while the fan will also start. This function is to avoid to high starting
current.
6.7 Hygrostat control
The air dryers of the AP-series dispose of a hygrostat for setting the required
humidity value. This hygrostat is located in the operation panel. It makes that the air
dryer cuts in as soon as the ambient humidity exceeds the preset value. If the
humidity value falls below the set value, the hygrostat will switch off the unit.
Pos. 0 = Switched off
Pos. 1 = Continues working
80-100% = The dehumidifier switches off
when a humidity of approx. 80-
95% r.h. has achieved. And
switches on again when humidity
is higher than 80 - 95%.
60 - 80% = The dehumidifier switches off
when a humidity of approx. 60-
80% r.h. has achieved. And
switches on again when humidity is higher than 60 - 80%.
40 - 60% = The dehumidifier switches off when a humidity of approx. 40 - 60% r.h.
has achieved. And switches on again when humidity is higher than 60 –
60% r.h.
20 - 40% = The dehumidifier switches off when a humidity of approx. 20- 40% r.h.
has achieved. And switches on again when humidity is higher than 20 –
40% r.h.
The smooth setting option of the hygrostat makes a very convenient humidity
control possible for you. If very precise values are requested, you should match the
hygrostat with the information on a precise hygrometer.
