Gardner Denver L55, User And Service Manual

Page: 39 / 64

August 20, 2018 37
8.2 Putting a decommissioned
compressor back into operation
Before commissioning the compressor all the electrical
and electronic components and units should be
checked for the ingress of water or condensation.
If the electronic control system was removed during
shut down, it must be re-installed.
Then proceed as described in chapter 8.1 'First
commissioning'.
NOTICE
Only for L55RS-L80RS: If the compressor has
been in storage for a substantial period of time
(up to 2 years), switch the main power supply
switch on (ON) at least one (1) hour prior to
commissioning. This ensures the operability of
the capacitors and prevents any damage from
occurring.
If the compressor has been in storage for
longer than 2 years, please contact an
authorized Gardner Denver Distributor prior to
start-up.
8.3 Display of the compressor control
GD Pilot TS
Fig. 16
1. Touchscreen Display
2. Start push-button [ I ]
3. Stop push-button [ O ]
4. red LED
Flashing slowly = Warning
Flashing rapidly = fault
5. yellow LED Flashing slowly = Maintenance required
6. green LED Lit up permanently = Unit in operation
Flashing slowly = Unit in standby mode
7. Emergency stop
WARNING
The compressor can be automatically
started at any time when it is in standby
mode, i.e. the green LED is flashing.
8.4 Routine commissioning
WARNING
Rotating parts inside the unit may lead to
injuries, e.g., cutting of finger or hand.
· Before commissioning make sure that no
one is located in the danger zone of the
motor/screw compressor!
· After doing work: Check that all safety
equipment is reinstalled and that all tools
have been taken out!
·
Only operate the screw compressor with
the coverings closed!
For routine commissioning, proceed as follows:
·
Check the oil level in the pressure reservoir
(also see Section 7.5)
·
Open shut-off valves between the screw
compressor, reservoir and pipe.
·
Ensure cooling water supply in accordance with
Chapter 7.3. (only water-cooled units).
·
Turn on the main power supply switch.
·
After the power supply was switched on, all LEDs
on the compressor control GD Pilot light up for a
display test. The fault shown on the display [power
supply fault] must be acknowledged in the fault
memory menu item prior to starting the unit. (The
display language can be set in the start screen
using the "globe icon".)
·
After the acknowledgement, the message [READY
TO START] appears on the display, unless another
fault is present.
·
Press START button [ I ] (- 2 - Fig. 16).
·
To switch off the compressor in the usual way use
the STOP button (-3- Fig. 16) and not the
emergency STOP button (-7- Fig. 16). After
shutdown the compressor has a run on time of
30 - 50 seconds (soft-stop). The time remaining is
counted down on the display.
Start-up protection of the electric motor
The screw compressor unit will not start up if the final
compression pressure is more than
11.6 PSI for L55
/
or
29 PSI for L55RS-L75RS.
Temperature start-up protection
The screw compressor unit will not start up if the
ambient temperature is lower than 33.8 °F.