Gardner Denver L4-5C Original User Manual page 19

10. For your convenience, the following excerpt from the Controller manual is presented to assist in
programming the basic operating parameters. However, we strongly recommend you read the
Controller manual before attempting operating the compressor package.
Figure 3-1 GD Pilot Controller Layout and Main Screen

Controller Hardware layout.
o
See Fig 3-1 for the layout of the main screen and input devices.
o
The ( I ) key switches unit on.
o
The (O) key switches unit off.
The (Ө) key enters a selection and clears a fault.
o
The (↑↓) keys, hit simultaneously, call up or exit a menu/submenu.
o
The (↑) key navigates to a previous submenu/menu or increases a parameter value.
o
The (↓) key navigates to a next submenu/menu or decreases a parameter value.
o
o
Display info (1
o
Display info (2
o
Display info (3

Setting the Cut-out Pressure
Navigate to the [Control Menu] by pressing simultaneously the (↑↓) keys.
o
Navigate to the [Cut out] submenu with the (↓) key. Adjust the pressure to a value between 1
o
to 6 psig above the desired operating pressure by using the (↑↓) keys.

Setting the Cut-in Pressure
Navigate to the [Cut in] submenu with the (↓) key. Adjust the pressure to a value at least 1 to
o
6 psig below that of the desired operating pressure by using the (↑↓) keys.
o
For 1 phase models which use a variable frequency drive (for narrow speed modulation), the
"Cut-in" submenu is replaced with a "Target" submenu. In this case, adjust the pressure to a
value equal to the desired operating pressure.

Selecting the operating mode
Navigate to the [Automatic Operation] submenu with the (↓) key, this is the recommended
o
mode to use until you become familiar with the Controller manual and other operating modes
available.
st
row): AE discharge temp and press, MPV discharge press (permanent).
nd
row): Menus. Total Running Hrs. default menu.
rd
row): Status, Fault and Warning messages. Load status default menu.
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