User manual

2920 1207 05
17
User manual
The example in Fig. 12.7 indicates:
- On line 1, the name of the sensor (Compressor <<Element
outlet>>)
- On line 2, the type of parameter (<<Delay at>> shut-down
<<signal>>)
- On line 3, the unit (<<sec>>) and the actual value (<<0>>)
9. If it should be necessary to modify the nominal setting of 0
seconds, first consult section 18 before pressing the key
<<Mod>> (modify) and then using the scroll keys (6-Fig.
2.1) for modifying.
10. Use the key <<Prog>> to program the new value or the key
<<Canc>> to cancel the modification operation (the original
value will be retained).
12.4.2 Dewpoint temperature
For GA Full-feature (compressor with integrated air dryer), a
downward pointing arrow appears on the third line of the screen
(Fig. 12.4) indicating that a second option, i.e. dewpoint
temperature, can be selected:
1. Press the scroll key ↓ (6-Fig. 2.1). Following screen
appears:
Dewpoint ↑
Temperature
Menu Slct
F1 F2 F3
Fig. 12.8. Example of a modifying screen (protection settings)
2. Select the option by pressing the key <<Slct>> (select).
3. On GA5 FF up to GA45 FF, the warning level for high
dewpoint depends on the ambient temperature and is not
programmable, a screen as shown in (Fig. 12.10) appears.
On GA55/90C FF, a screen similar to the one shown in
(Fig. 12.9) appears:
Dewpoint
Warn Max 15
C4↓
Menu Mod
F1 F2 F3
Fig. 12.9. Example of a modifying screen (protection settings)
The example in Fig. 12.9 indicates:
- On line 1, the name of the sensor (<<Dewpoint>>)
- On line 2, the type of parameter (<<Warn>> or warning),
the level type (<<Max>> or maximum level) and the actual
programmed value (<<15>>)
- On line 3, the unit (<<C>>) and the actual measured value
(<<4>>)
4. Modifying is carried out in a similar way as described in
steps 3 and 4 of section 12.4.1.
5. The arrow on the modifying screen (Fig. 12.9) indicates to
use the scroll key ↓ (6-Fig. 2.1) to show the relevant delay
at signal (i.e. the time period during which the warning signal
must exist before the warning message appears (e.g. <<3
sec>>). See Fig. 12.10.
Dewpoint ↑
Delay at signal
sec 3 ↓
Menu Mod
F1 F2 F3
Fig. 12.10. Example of a modifying screen (protection settings)
6. Modifying is carried out in a similar way as described in
steps 3 and 4 of section 12.4.1.
7. The arrow ↓ on the modifying screen (Fig. 12.10) indicates
to use the scroll key ↓ (6-Fig. 2.1) to show the delay at
start (i.e. the time period during which the warning signal is
ignored after starting to allow the dryer to reach the dewpoint
temperature); see Fig. 12.11.
Dewpoint ↑
Delay at start
sec 255
Menu Mod
F1 F2 F3
Fig. 12.11. Example of a modifying screen (protection settings)
The example in Fig. 12.11 indicates:
- On line 1, the name of the sensor (<<Dewpoint>>)
- On line 2, the type of parameter (<<Delay at start>>)
- On line 3, the unit (<<sec>>) and the actual value
(<<255>>)
8. Modifying is carried out in a similar way as described in
steps 3 and 4 of section 12.4.1.
9. Use the key <<Menu>> and the key ↑ to return to the initial
screen as shown in Fig. 2.1.
12.4.3 Cooling water outlet temperature
For water-cooled GA55/75 compressors, a downwards
pointing arrow appears on the third line of the screen (Fig. 2.1)
indicating that a second option, i.e. cooling water outlet
temperature can be selected:
1. After pressing the arrow key on the screen shown in Fig.
12.4, a screen similar to that in Fig. 12.12 is shown:
Cool water out ↑
Temperature
Menu Slct
F1 F2 F3
Fig. 12.12. Example of a modifying screen (protection settings)