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4990616006 Date: 06/16
GD150 Installation, Operating & Maintenance Manual
Installation
3.9
Ancillaries
Air Inlet Filter and Flexible Induction Kit. (Fig 8, items 1)
The inlet filter is necessary to clean the air entering the machine to prevent
problems through large particle ingress and long term problems by small
particles eroding main bore components.
The filter should be located so that the inlet air is cool, dry and as clean as
possible to maximise filter and machine life.
The inlet filter should be supported using the mounting band supplied rather
than mounting directly to the suction port.
High temperature silicone sealant is recommended to be applied between
the flexible inlet pipe and inlet during hose fixing.
Relief Valve. (Fig 8, Item 12 )
The relief valve (setting stamped on the central brass valve) is provided to
protect the machine against pressures of over 2.5 bar g (36 PSI), and should
not be adjusted in any way. As such, adjustment of the relief valve will
invalidate the GD150 and relief valve warranty.
The relief valve is supplied as a separate item (M35 x 1.5 male thread) and
must be installed in the discharge line within 1m of the machine (see Fig. 1).
The ideal mounting orientation is horizontal to prevent water/debris ingress,
although the valve will function in any orientation.
Discharge Silencer (not shown)
If one is fitted, it should be located as close to the machine discharge port as
possible, after the relief valve.
Check (non-return) Valve (Fig 8, Item 13 )
This is to prevent a back-flow of air and product (often encountered when
stopping compressors whilst the discharge tank is still pressurised) from
entering and damaging the compressor. It should be mounted as the last
ancillary in the discharge line.
Expansion Joints (not shown)
Any pipe work or equipment should incorporate flexible elements where:
• Movement due to thermal expansion is likely
• Pipe work crosses the vehicle chassis.
Discharge Filter (Fig 1, Item 6)
For food or other highly sensitive products, we recommend that a fine gauge
discharge filter is used (5 micron nominal rating recommended) and we offer
our own unit shown in the diagram.
Ball Valve
A 1“ manual ball valve should be fitted on the discharge side of the machine,
before the check valve, to prevent starting the compressor against a
pressurised tank/line. This allows venting of the compressor discharge air to
atmosphere during start-up.
NOTE
The relief valve must be the
first ancillary in the discharge
line and must be fitted as
close as possible, but must
vent away from the machine &
operator.
NOTE
Do not mount the machine
close to exhausts or other
warm air sources and locate in
a position clear from vehicle
road spray
NOTE
Failure to fit a Ball Valve could
cause failure due to high shaft
torque or product blow-back.
Any excess silicone sealant
should be removed. Silicone
entering the machine can
cause damage or failure.
CAUTION
