MAINTENANCE
36
HP935, VHP750, MHP825, XHP750, XP1060
Clean the exterior of the filter housing and remove the spin–on
element by turning it in a counter–clockwise direction.
Inspection
Examine the filter element.
CAUTION: If there is any indication of the formation of varnishes,
shellacs or lacquers on the filter element, it is a warning that the
compressor lubricating and cooling oil has deteriorated and that it
should be changed immediately. Refer to LUBRICATION later in this
section.
Reassembly
Clean the filter gasket contact area and install the new element by
screwing in a clockwise direction until the gasket makes contact with
the filter housing. Tighten a further
1
/
2
to
3
/
4
of a revolution.
CAUTION: Start the machine (refer to PRIOR TO STARTING and
STARTING THE UNIT in the OPERATING INSTRUCTIONS section
of this manual) and check for leakage before the machine is put back
into service.
COMPRESSOR OIL SEPARATOR ELEMENT
Refer to the SERVICE / MAINTENANCE CHART in this section for
service intervals.
Removal
WARNING: Do not remove the filter(s) without first making sure
that the machine is stopped and the system has been completely
relieved of all air pressure. (Refer to STOPPING THE UNIT in the
OPERATING INSTRUCTIONS section of this manual).
Disconnect all hoses and tubes from the separator tank cover plate.
Remove the drop–tube from the separator tank cover plate and then
remove the cover plate. Remove the separator element.
Inspection
Examine the filter element. Examine all hoses and tubes, and
replace if necessary.
Reassembly
Thoroughly clean the orifice/drop tube and filter gasket contact area
before reassembly. Install the new element.
WARNING
Do not remove the staple from the anti–static gasket on the
separator element since it serves to ground any possible static
build–up. Do not use gasket sealant since this will affect electrical
conductance.
Reposition the cover plate, taking care not to damage the gasket,
and replace the cover plate screws tightening in a criss–cross pattern
to the recommended torque (refer to the TORQUE SETTING TABLE
later in this section).
Replace the drop–tube and reconnect all hoses and tubes to the
separator tank cover plate.
Replace the compressor oil (refer to LUBRICATION later in this
section).
CAUTION: Start the machine (refer to PRIOR TO STARTING and
STARTING THE UNIT in the OPERATING INSTRUCTIONS section
of this manual) and check for leakage before the machine is put back
into service.
COMPRESSOR OIL COOLER AND ENGINE RADIATOR AIR
CHARGE COOLER
When grease, oil and dirt accumulate on the exterior surfaces of the
oil cooler and radiator, the efficiency is impaired. It is recommended that
each month the oil cooler and radiator be cleaned by directing a jet of
compressed air, (carrying if possible a non–flammable cleaning
solvent) over the exterior core of the cooler/radiator. This should
remove any accumulation of oil, grease and dirt from the exterior core
of the cooler so that the entire cooling area can radiate the heat of the
lubricating and cooling oil/water into the air stream.
WARNING: Hot engine coolant and steam can cause injury. When
adding coolant or antifreeze solution to the engine radiator, stop
the engine at least one minute prior to releasing the radiator filler
cap. Using a cloth to protect the hand, slowly release the filler cap,
absorbing any released fluid with the cloth. Do not remove the
filler cap until all excess fluid is released and the engine cooling
system fully depressurised.
WARNING: Follow the instructions provided by the antifreeze
supplier when adding or draining the antifreeze solution. It is
advisable to wear personal protective equipment to prevent skin
and eye contact with the antifreeze solution.
AIR FILTER ELEMENT
The air filter should be inspected regularly (refer to the
SERVICE/MAINTENANCE CHART) and the element replaced when
the restriction indicator lamp illuminates. The dust collector box(es)
should be cleaned daily (more frequently in dusty operating
conditions) and not allowed to become more than half full.
The safety element should be renewed every 3000 hours or every
third change of the main element, whichever comes first.
Removal
CAUTION: Never remove and replace element(s) when the machine
is running.
Clean the exterior of the filter housing and remove the filter element
by releasing the nut.
If the safety element is to be renewed, thoroughly clean the interior
of the filter housing prior to removing the safety element.
Inspection
Check for cracks, holes or any other damage to the element by
holding it up to a light source, or by passing a lamp inside.
