Operating instructions
5
CONNECTION TO THE
COMPRESSED AIR MAINS
Warning
!
- Pressure in the mains
The compressed air mains might be under pressure,
and working on mains that are under pressure can
result in injury. Therefore, first shut the mains off
from all sources of pressure and let the air out.
Compressed air connection with flexible
hosepipes
Use a suitable flexible hosepipe for connection to the
compressor. This will prevent tension from causing
cracks, and also noise from being transmitted.
Connecting pipes and couplings of the right size and
grade for the relevant operating pressures and
temperatures must always be used, and components
that are in a faultless condition.
CONNECTION TO THE ELECTRIC
MAINS
Warning
!
- drive belt guard
Wheels, drive belts, and fan blades can cause very
severe injuries when the are in motion. The compres-
sor must never be given a trial run or started up
unless the drive belt guard is in place and the housing
closed.
Exception: Machines with a sound-insulation
hood
can be run with side cover open to check the
direction of rotation, but this must be done very
carefully.
INSTRUCTIONS FOR MACHINES WITH
SOUND-INSULATION HOOD
Machines which are fitted with a sound-insulation
hood are also fitted with ventilation fan to prevent a
build-up of heat. After the machine has been swit-
ched off, this fan continues to run for a short time
until the machine has cooled down.
INSTRUCTIONS FOR ELECTRICAL
CONNECTION
•
The electrical connection and safety precautions
must comply with VDE regulations and/or other
regulations in force in the country of operation,
including those issued by the local power supply
utility.
•
Always check the direction of rotation before
starting the compressor up.
•
Units connected without a plug connection
should be fitted with a lockable main switch as
well as a suitable main fuse.
•
Please refer to the technical data for the necessary
cross-sectional size of the wiring and the rating of
the fuse.
CHECKING THE DIRECTION OF ROTATION
⇒
Switch the machine on or plug it in.
⇒
Turn the master switch on and immediately off
again.
⇒
If the ventilator wheel turns in the direction of the
arrow, this is correct; if not, reverse the poles on
the motor.
STARTING UP AND OPERATING
STARTER SWITCH
Warning
!
- hot surfaces
The compressor block and the air leads coming from
it can become very hot during operation. Avoid the
risk of burns, and do not touch the hot parts of the
compressor.
Warning
!
- drive belt guard
Wheels, drive belts, and fan blades can cause very
severe injuries when the are in motion. The compres-
sor must never be started up unless the drive belt
guard is in place and the housing closed.
SWITCHING THE MACHINE ON
⇒
Check the starter switch - it must be set at the “0”
position.
⇒
Check the oil level (GKTE, GKTZ, GKTZH)
⇒
Switch the master switch on or plug in.
⇒
Set the starter switch to the “1” position, and the
machine is now ready to operated.
•
The compressor starts automatically when
compressed air is drawn off and the pressure in
the storage tanks falls below a pre-set level. It is
therefore possible that the compressor does not
start up as soon as it is switched on, and that it
only switches off after a certain time delay (see
pressure switch).
•
The compressor stops automatically as soon as
full pressure is attained.
