User manual

2920 1207 05
9
User manual
Program See Function
section
Saved data 15 Calling up the saved data: last
shut-down, last emergency stop,
longest load, longest unload.
MORE 16 Quick look at the actual status of
the compressor: automatic or
manual control, local or remote
control, start/stop timer on or off,
max. pressure, delivery air
pressure and temperature,
dewpoint, motor overload status,
running and loading hours, on
GA55 up to GA90C also the
pressure difference over the oil
separator.
MANUAL 17 To manually load/unload
LOAD/UNLOAD the compressor.
4.2 Selecting a menu (Figs. 4.1 up to 4.3)
4.2.1 Main display
When the voltage is switched on, the MAIN DISPLAY is shown
automatically, showing in short the operation status of the
compressor. The other menus are selected by pressing one of
the function keys (5-Fig. 2.1).
4.2.2 Calling up other menus
MAIN MENU
Pushing the key <<Menu>> initiates the MAIN MENU, giving
access to most other functions via submenus; the submenus can
be selected by pressing the key <<Slct>> (select); see section
6.
MORE
Pushing the key <<More>> gives the operator a quick look at
the actual status of the compressor; see section 16.
UNLOAD or LOAD
The keys <<Unld>> (unload) and <<Load>> are used to
manually unload and load the compressor respectively. See
section 17.
4.2.3 Returning to the main menu or main display
MAIN MENU
Whenever displayed on the bottom line of the screen (4-Fig.
2.1), press the key <<Menu>> to return from a submenu to the
MAIN MENU.
MAIN DISPLAY
Whenever displayed, press the key <<Main>> to return from a
menu to the MAIN DISPLAY.
5 MAIN DISPLAY: compressor status
in short/gateway to all functions
5.1 Function
The main display shows in short the compressor operation status
and is the gateway to all functions implemented in the regulator.
5.2 Procedure
The main display is shown automatically when the power is
switched on.
If the function keys or arrow keys (5, 6 and 7-Fig. 2.1) are not
used for 4 minutes, the regulator will automatically return to the
main display.
Exception is made, when the screen is left untouched when
modifying data in the regulator. In this case, the screen will
remain unchanged, since the regulator does not take a decision
whether to accept or refuse the new data.
Delivery air
bar 7.0
Auto loaded
Menu More Unld
F1 F2 F3
Fig. 5.1. Example of the main display
Line Indicates Remarks
1 Sensor which -
is active
2 Unit-actual reading The unit for pressure can be bar,
psi or kg/cm
2
depending on the
programmed selection. The unit
for temperature can be C (degrees
celsius) or F (degrees fahrenheit).
See section 14.
3 Compressor status Examples:
- Compressor Off
- Manual Unloaded
If the timer is activated (see
section 13), the message "timer
active" will also be shown.
3 Motor overload, If the unit is shut down, the
shut-down or regulator will automatically call
warning up the status display (section 7) on
which the cause for the shut-down
is indicated. It remains possible
to have a closer look at other
parameters related to the shut-
down by means of the menus.