JUN-AIR 4000 series [no cabinet] - Handbuch (Seite 11)

11
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If compressor is not fitted with dryer,
drain condensate from air receiver
(at a pressure of max.  bar/30 psi).
If equipped with autodrain, this will
take place automatically, however,
drain bottle has to be emptied.
If compressor is fitted with outlet
filter, check and empty for water
by pressing the black button in the
bottom. If fitted with autodrain, this
will take place automatically.
Make sure that the fan at the top
of the cover works. Fan starts at a
motor temperature of 3°C/89°F and
runs continuously until temperature
has fallen, although compressor
does not work.
Check compressor, air tubes and
equipment for leaks, and check the
pumping time.
Inspect and replace intake filter, if
necessary.
Clean the compressor with a soft,
damp cloth. Dust and dirt prevent
cooling.
Check dryer function according to
instructions in the "Adsorption Dryer
Manual".
Check the O-ring in the non-return
valve and replace if necessary.
Note! Empty receiver of air before
dismounting.
Check filter and filter elements for
optimum efficiency.
Test the safety valve by gently pulling
the ring with pressure in the receiver.
Information
Please note that you can find the pictures and illustrations
we are referring to on page 47.
Note!
This product must be connected to a power supply
branch protected by a fuse or circuit breaker with a
rating of not less than 20 A, in order to comply with
the essential requirements of the EMC-directive
89/336/EEC of may 3rd. 1989.
Guarantee
Provided that the operational instructions have been carried out,
your JUN-AIR compressor is guaranteed against faulty material
or workmanship for  years.
The air receiver is guaranteed for 5 years.
The guarantee does not cover damage caused by violence,
misuse, incorrect repairs or use of unoriginal spare parts.
Costs of transportation of parts/equipment are not covered by
the guarantee.
JUN-AIR’s Conditions for Sale and Delivery will generally apply.
JUN-AIR International A/S reserves the right to change
technical specifications/ constructions.
How to operate the JUN-AIR compressor
Your JUN-AIR compressor is very easy to operate. Observe
the following simple instructions and you will get many years’
service from your compressor.
1. Visually inspect unit for shipping damage, contact your
supplier immediately if you think the unit may have been
damaged.
2. Place the compressor in a dustfree, dry and cool, yet
frostfree, room. Do not install in a closed cupboard, unless
adequate openings for ventilation are available on top and
bottom (minimum 500 cm²/77.5 in² each). If the compressor
is placed under a table, a minimum of 20 cm/7.9 in free
height must be available above the compressor, or an
opening of Ø30 cm/11.8 in, corresponding to the fan
opening at the upper part of the compressor cabinet or
above the cylinder head of the compressor, should be cut in
the table.
3. The four rubber legs are adjustable to ensure that the
compressor stands firmly on the floor (fig. 1).
4. The pneumatic equipment is connected to the pressure
regulator either by using the hose tail and securing with a
hose clamp, or by unscrewing the hose tail and utilizing the
1/4" BSP thread for other preferred connections (fig. 2).
5. Hoses from filter, dryer and auto-drain must be led to a
drain or container, e.g. JUN-AIR bottle for condensate
(standard on model BD-PD).
6. Connection 30V:
Plug the compressor into an outlet switch of nominal
voltage and ensure that fusing is adequate (see technical
details).
7. Connection 3x400V:
Plug the compressor into an ordinary 3x400V mains switch
with grounding and ensure that fusing is adequate (see
technical details). If the compressor does not start, the
phase sequence in the plug is incorrect, and the two phases
in the plug have to be changed. (The wires in the terminal
box and the motor protection are not to be touched).
Installations for 3x400V are fitted with phase sequence
relay as the compressor must not rotate in the wrong
direction.
8. Start the compressor using the 0/1 switch on the pressure
switch (fig. 6). The compressor will automatically switch off
at the preset pressure. If the motor does not start it may
be due to pressure in the receiver, and the motor will then
start automatically when the pressure reduces to approx.
6 bar/87 psi. If the compressor is fitted with a cabinet,
the ventilation starts automatically at an internal cabinet
temperature of 36°C/97°F.
9. To obtain a constant output pressure, adjust the regulator
at the desired pressure. The regulator can be locked by
pushing down the regulating knob.
10. Adjustment of pressure (fig. 3):
A: Max. pressure adjustment (cut-out)
B: Differential adjustment (cut-in)
The cut-in pressure (normally 6 bar) is set by adjustment
of differential screw B. Turn clockwise to reduce cut-in
pressure.
The cut-out pressure is set by even adjustment of the two
screws A. (Cut-in pressure + differential = cut-out pressure).
Turn clockwise to increase cut-out pressure.
The switch is normally factory set for operation at 6-8 bar
(approx. 90-10 psi).
Preventive compressor maintenance
Operating manual
Operating manual
GB