User manual

2920 1207 05
23
User manual
17 MANUALLY LOADING/
UNLOADING
17.1 Function
To load and unload the compressor manually.
Normally, the compressor is running in automatic operation,
i.e. the electronic regulator loads, unloads, stops and restarts
the compressor automatically. LED (1-Fig. 2.1) is then alight.
If required, the compressor can be unloaded manually. In this
case, the compressor is switched out of automatic operation,
i.e. the compressor remains running unloaded unless it is loaded
again manually.
17.2 Manually unloading
1. If necessary, activate the main display. See section 4.2.
2. Press the key <<Unld>> (unload) (5-Fig. 2.1). LED (1-
Fig. 2.1) goes out. The message <<Manual Unloaded>>
appears on the display.
17.3 Manually loading
1. If necessary, activate the main display. See section 4.2.
2. Press the key <<Load>> (5-Fig. 2.1). LED (1-Fig. 2.1)
lights up. Note that the command <<Load>> does not force
the compressor in loaded condition, but it will switch the
compressor to automatic operation again, i.e. the compressor
will be loaded if required by the air net pressure.
18 PROGRAMMABLE SETTINGS
18.1 Regulation settings
Minimum Nominal Maximum
Motor running time in star . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . sec 5 10 10
Load delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . sec 0 0 10
Number of motor starts for GA11 up to -22 . . . . . . . . . . . . . . . . . . . . starts/hr 0 10 30
Number of motor starts others. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . starts/hr 0 10 10
Minimum stop time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . sec 1) 20 30
Required stop period 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . sec 0 20 60
Permissive start period 10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . sec 0 20 60
Power recovery time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . sec 1 3 12)