15 - 1
Cooling System
Heat is continuously extracted from the air being
compressed by the injection of a controlled flow of cool oil
into the compressor unit rotor casing. This contributes to
efficient compression and results in acceptably low air
delivery temperatures without the need for other intercoolers
or aftercoolers.
After separation from the discharged air, the oil is taken from
the receiver and cooled in an air blast cooler 3 situated at
the rear of the plant. The oil enters the top of the cooler then
passes through the cooler before passing to the filter and
rotors.
The air flow necessary for the cooler is provided by a pusher
fan. The plant must be run with the exterior panels closed
to obtain the most efficient cooling. Always select the
coolest place possible for the plant to operate in; refer to
Technical Data for maximum permissible operating ambient
temperatures.
Note: Use hydraulic sealant (part number 4102/0300) for
sealing fittings and threads below 3/4 in. BSP.
Section A Attachments
9803/7130
Section A
15 - 1
Issue 1
Airmaster Compressor
1
2
3
4
5
6
7
8
Descriptions
Lubrication System
When the compressor is running, the entire system is
pressurised and oil is forced from the air/oil receiver 1, via
hose 2 to the oil cooler 3. The cooled oil then passes
through hose 4 and the filter 5 to the compressor 7 and is
injected onto the rotors where it mixes with the inlet air at
the commencement of compression. The oil cools the air
being compressed, seals between the rotors and lubricates
the inlet and delivery bearings. Oil from the delivery bearings
drops to the bottom of the delivery end cover and returns to
the inlet end of the rotors via internal porting, where it rejoins
the main oil flow.
After passing through the compressor delivery port, the
air/oil mixture is taken via hose 8 to the receiver where
separation of the oil from the air takes place.
Component Key
Item Description
1 Air receiver
2 Hose
3 Oil cooler
4 Hose
5 Oil filter
6 Hose
7 Compressor
8 Hose
A213330
www.WorkshopManuals.co.uk
Purchased from www.WorkshopManuals.co.uk
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