©
B
RE
A
T
H
E
S
A
FE
20
1
9
www.breathe-safe.com.au
Page
19
Issue date
:
Controlled document
:
Revision:
WA900-3EO
COMPONENT MAINTENANCE
4. FAN BLADES
Check the fan blades for wear or damage. Check that blades are
tight on motor shaft.
Any damaged/worn blades should be replaced -
DO NOT repair
.
5.FRESH AIR FILTER (Pressuriser)
The fresh air pressurising filter is located inside the filter housing of
the pressuriser unit. The fresh air filtration system is comprised of a
pre-cleaner plus a filter element.
Both of these items should be checked at regular intervals for signs
of damage or deterioration. To service fresh air filtration systems
proceed as follows -
1.
Remove pre-cleaner bowl (if fitted) from top of filter housing.
Clean out accumulated dust and refit bowl.
Note: Take care not to over-tighten knurled knob on top
of pre-cleaner bowl cover.
2.
Unclip or unscrew the filter housing and remove the cover.
3.
Remove and clean the filter element by gently tapping on a
firm surface -
DO NOT wash
.
4.
Check the rubber seals at the base of the filter element for
damage or deterioration.
5.
Remove accumulated dust from filter housing.
6.
Refit the filter element, ensuring that it seats correctly and
replace cover.
6. RECEIVER DRIER / INLINE DRIER
This is a fully sealed, non-serviceable component which should be
renewed whenever the refrigerant system is ‘opened’. After renewal
of the receiver drier the system must be evacuated and recharged.
The drier is isolated to minimise gas loss on replacement.
To remove:
1.
Shut off line valve at condenser coil outlet
2.
Run compressor and pump down liquid line.
3.
Shut off line valve upstream of drier.
4.
Remove and replace.
Note: Ensure both line valves are reopened once drier is
replaced. An access port is provided to evacuate this
section prior to re-opening.
7. PRESSURE CONTROL SWITCH
This is a fully sealed, pre-set, non-serviceable component.
It should be noted that this is fitted on Schraeder valves and can be
replaced without loss of gas.
8. ELECTRONIC THERMOSTAT
This item is fully sealed and a non-serviceable item.
Please refer to FAULT DIAGNOSIS section to ensure correct
operation if required.
OPERATING INSTRUCTIONS
