8 Starting and Operating
Gardner Denver
26
8.5 During
Operation
Danger
When the system is in stand-by mode, i.e. the green
LED is flashing, the compressor can start
automatically at any time.
8.5.1 Operating
Modes
The GD Pilot TS controller incorporates two operating
modes: Automatic Operation and Continuous
Operation.
Automatic Operation (drive motor stops and starts)
Automatic operation is the most efficient and
economical compressor operating mode. Automatic
Operation is the compressor’s default factory setting
(Settings > Control > Operating Mode >
Automatic Operation).
If the line pressure goes above the p1 Cut-Out Point/p2
Cut-Out Point, the controller will fully unload the
compressor and initiate the run-on timer.
If there is no air demand at the end of the run-on time,
the controller stops the compressor and goes into
stand-by, waiting for the network air pressure to fall
below p1 Target Pressure/p2 Target Pressure
or p1
Cut-In Point/p2 Cut-In Point
. The controller will then
re-start the compressor.
Continuous operation (drive motor runs
continuously)
Also in Continuous Operation the GD Pilot TS controls
the on-load/off-load operation in response to the
demand for air.
If the compressor goes into off-load mode, the motor
will not be stopped
(Settings > Control >
Operating Mode > Continuous Operation).
8.6
Water Circuit Control
The water level in the pressure tank is measured by a
level sensor. The water treatment unit makes water
available for topping up.
8.6.1
Automatic Level Control
The water quantity can increase or decrease during
operation (water input through condensate at high
atmospheric humidity, water output through low
remaining water quantity in compressed air).
The changes in water level are automatically corrected
by the level control during operation. Therefore, the
water treatment unit does supply water (only in on-load
operation) or remove excess water (only with running
motor).
8.6.2 Cyclical
water
change
In order to guarantee a uniform water quality, water is
changed at specific intervals (set point
Change
cycle
). The
Home
Page indicates the remaining time
(
Remaining change time
) next to the symbol
.
Once the
Remaining change time
has elapsed, the
water change cycle starts. This cycle consists of a
discharge stage (only in on-load mode), followed by an
intake stage (only in on-load mode).
If the water change cycle is interrupted by an off-load
stage or machine standstill, the cycle will be resumed in
the next on-load stage. If the cycle is terminated, the
remaining time (
Remaining change time)
will be
restarted (set value
Change cycle
).
8.7
Stopping the Compressor
1) Press the Stop button to stop the compressor. The
machine will continue to run but will stop after a 30-
second Soft Stop delay (
Settings > Factory
Settings > Soft Stop Time
).
2) The screen will display the message
Stopping
Procedure “x” s
and the seconds remaining
until the motor is stopped will count down to zero.
Note
If the machine is in stand-by when it is necessary to
shut it down, press the Stop button.
The message display will change from
Attention:
Start with Pressure Requirement...
to
Ready to Start,
and the flashing green LED will
switch off.
VS
FS
