Jun-Air 1000 motor, Operating Manual

4

  Information

  Please note that you can find the pictures and illustrations   
   we are referring to on page 5.

Warning

·

  Unless directions are followed and original spare parts 

used, physical injury or property damage may result.

·

  Protect compressor against rain, moisture, frost and dust.

·

  Compressor is only suitable for installations with the nomi­

nal voltage stated on the motor plate.

·

  The compressor is constructed and approved for a max. 

pressure of 10 bar/150 psi. Do not adjust the compressor to 
a higher pressure.

·

  Do not in any way block or prevent the normal functioning of 

the safety valve on the receiver.

·

  Only connect pneumatic equipment suitable for the max. 

pressure indicated.

·

  Do not operate compressor at ambient temperatures 

exceeding 5°C/95°F or falling below 0°C/2°F.

·

  Do not touch compressor motor during operation as there is 

a risk of burn due to high temperatures.

·

  Do not direct air flow at head or body.

·

  When a flammable liquid is sprayed, there may be danger of 

fire or explosion, especially in closed rooms.

·

  Defectuous inlet cable on x400V units must be replaced 

by authorized personnel from JUN­AIR International A/S or 
skilled craftsmen.

·

  Always keep the compressor out of reach of children.

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 JUN­AIR 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. 
JUN­AIR’s Conditions for Sale and Delivery will generally apply. 
JUN­AIR International A/S reserves the right to change 
technical specifications/ constructions.

How to operate the JUN-AIR compressor

Your JUN­AIR 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 Ø0 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.

.  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 auto­drain must be led to a 

drain or container, e.g. JUN­AIR bottle for condensate 
(standard on model BD­PD) (fig. ).

6.  Connection 20V: 

Plug the compressor into an outlet switch of nominal voltage 
and ensure that fusing is adequate (see technical details).

7.  Connection x400V: 

Plug the compressor into an ordinary x400V 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 x400V 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. 7). 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 6°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. 4):
 

A: 

Max. pressure adjustment (cut­out) 

B: 

Differential adjustment (cut­in)

The cut­in pressure (normally 6 bar) is set by adjustment 
of differential screw B. Turn clockwise to reduce cut­in 
pressure.

The cut­out pressure is set by even adjustment of the two 
screws A. (Cut­in pr differential = cut­out pressure). 
Turn clockwise to increase cut­out pressure. 

The switch is normally factory set for operation at 6­8 bar 
(approx. 90­120 psi).

Technical details

For tables with technical data and performance curves, see 
page 14.

Operating manual

Operating manual

GB