7. Commissioning
33
7
Commiss ioning
7.1
First commissioning
Danger
Rotating parts may lead to injuries.
•
Only operate the screw compressor unit with
closed access panels.
Important
Although every CompAir screw compressor has
been subjected to a test run at the factory and has
again been thoroughly inspected before shipment,
damage during shipment cannot be excluded. For
this reason, every screw compressor should be
checked once again for damage before being
commissioned. In addition, it should be observed
during the first operating hours.
The screw compressor is provided without cooling
water and may only be started after it has properly
been filled with water (also see Chapter 6.5).
When storing the screw compressor system or in
the event of a longer period of downtime, if there is
the risk of frost ( t < 1°C) the cooling water should
be completely discharged (compressor stage,
coolers, system containers, water filters, storage
containers, RO unit, lines, valves).
The screw compressor unit is completely factory-
assembled. It can be directly connected to the com-
pressed air mains by means of a flexible connection.
First commissioning is carried out as follows:
•
Remove transport guards, if fitted.
•
Check the water level in the pressure reservoir
(see also chapter 6.5) (Fig. 16)
•
Check settings of the fan motor protection switch
(see Chapter 6.4.2)
•
Check the setting of the control-power transformer
(see also chapter 6.4.3) (Fig. 15).
•
Check and re-tighten all connecting terminals of the
electrical control.
•
Open isolator valves between the screw
compressor, reservoir and pipe.
•
Ensure cooling water supply in accordance with
Chapter 6.3 (only water-cooled units).
•
Operate main power supply switch.
•
After the power supply was switched on, all LEDs
on the compressor control DELCOS XL 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.
•
The factory setting of the setpoint value for the
network pressure (upper and lower switching point)
is saved in the compressor control DELCOS XL and
depends on the relevant pressure variant of the
compressor (see nameplate fig. 1, stage pressures
= maximum operating pressure). These settings can
be checked or changed in the compressor control
DELCOS XL menu [Settings; Pressure range, p1]
(further information can be found in section 5 of the
compressor control DELCOS XL operating manual).
•
Press the START button [ I ] (- 2 - Fig. 18) and
check the direction of rotation of the ventilator
(see fig. 17). With a wrong direction of rotation,
switch off the compressor. Turn master switch off
and secure it from being switched on again. Correct
the direction of rotation (see circuit diagram).
Then check the direction of rotation again.
•
Next check the control transformer output voltages
while operating under load (see section 9.9).
Temperature start-up protection
The screw compressor unit will not start up if the
ambient temperature is lower than + 2 °C (35.6 °F).
Summary of Contents for D110H RS
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