Jun-air 4000 series [no cabinet] User Manual download pdf (Page 11)

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If compressor is not tted with dryer,

drain condensate from air receiver

(at a pressure of max. 2 bar/30 psi).

If equipped with autodrain, this will

take place automatically, however,

drain bottle has to be emptied.

If compressor is tted with outlet

lter, check and empty for water

by pressing the black button in the

bottom. If tted 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 32°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 lter, 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 lter and lter elements for

optimum efciency.

Test the safety valve by gently pulling

the ring with pressure in the receiver.

Information

Please note that you can nd 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 2 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 specications/ 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 rmly on the oor (g. 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 (g. 2).

5. Hoses from lter, 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 230V:

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 tted 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 (g. 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 tted 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 (g. 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. 90-120 psi).

Preventive compressor maintenance

Operating manual

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Jun-air 4000 series [no cabinet] User Manual Page 11

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