Ingersoll-Rand 7120 - Manual (Page 53)

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7/120 (P425AWIR), 9/110 (XP375AWIR), 10/105 (HP375AWIR), 14/85 (VHP300AWIR),
7/170 (P600WIR), 10/125 (HP450WIR), 14/115 (VHP400WIR)
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).
Engage the adaptor in the cover plate with the drop–tube
integral with the filter, 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
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 ELEMENTS
The air filter should be inspected regularly (refer to the
SERVICE/MAINTENANCE CHART) and the element replaced
when the restriction indicator shows red or every 6 Months (500
hours), whichever comes first. The dust collector box(es)
should be cleaned daily (more frequently in dusty operating
conditions) and not allowed to become more than half full.
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.
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.
Check the seal at the end of the element and replace if any
sign of damage is evident.
Reassembly
Assemble the new element into the filter housing ensuring
that the seal seats properly.
Reset the restriction indicator by depressing the rubber
diaphragm.
Assemble the dust collector box parts, ensuring that they are
correctly positioned.
Before restarting the machine, check that all clamps are
tight.
VENTILATION
Always check that the air inlets and outlets are clear of debris
etc.
CAUTION: NEVER clean by blowing air inwards.
COOLING FAN DRIVE
Periodically check that the fan mounting bolts in the fan hub
have not loosened. If, for any reason, it becomes necessary to
remove the fan or re–tighten the fan mounting bolts, apply a
good grade of commercially available thread locking compound
to the bolt threads and tighten to the torque value shown in the
TORQUE SETTING TABLE later in this section.
The fan belt(s) should be checked regularly for wear and
correct tensioning.
FUEL SYSTEM
The fuel tank should be filled daily or every eight hours. To
minimise condensation in the fuel tank(s), it is advisable to top
up after the machine is shut down or at the end of each working
day. At six month intervals drain any sediment or condensate
that may have accumulated in the tank(s).