OPTIONS
52
HP935, VHP750, MHP825, XHP750, XP1060
At the bottom of the moisture separator and both filters are
strainers and constant–bleed orifices, which are sized to allow the
maximum flow of condensate while minimizing compressed air loss.
The condensate lines are then piped together, and the
condensate is injected at a single point into the engine exhaust
piping. The compressed air then travels through the minimum
pressure valve, and out through the service air valve. The air
pressure gauge on the instrument panel indicates the pressure
inside the separator tank. A service air pressure gauge is located
inside the front door of the compressor on the filter support.
If the IQ System is bypassed (Standard Operation selected), the
delivered air pressure will be approximately equal to the separator
tank pressure. If the IQ System operation is selected, the delivered
air pressure will be slightly less, depending on the restriction of the
filters.
Low Ambient Option Operation
When the ambient temperature falls to the point that the
aftercooler outlet temperature is approaching 45
F, the Temperature
Control Unit (TCU), mounted on the rear of the control panel, will
automatically adjust the louvers to control the cooling airflow through
the aftercooler.
In the event that the unit is operating under abnormal conditions
(i.e., an enclosure door open) which would cause excessive cooling
of the aftercooler, a temperature sensor in the aftercooler outlet
header will signal the TCU to further close the louvers if the
compressed air temperature falls to approximately 36
F or lower.
There are no user selectable or serviceable components in the
TCU. Contact Ingersoll–Rand Service if any abnormal operation of
the freeze protection control system occurs.
MAINTENANCE
Daily Maintenance:
Verify, during full–load (maximum compressed air delivery) that
the IQ System filter restriction indicators do not show excessive
restriction. Restriction indicators for the filters are mounted inside the
control panel, and will shut down the compressor if restriction
exceeds recommended values.
Weekly Maintenance:
Remove Y–strainer screens at the bottom of the moisture
separator and both filters and clean out any residue.
Verify that the orifices below the Y–strainers are not clogged.
Verify that the piping from the orifice purge points to the exhaust
system is not clogged.
Yearly Maintenance:
The normal maintenance interval on the primary and secondary
IQ System filters is one year, or earlier if pressure drop becomes
excessive. Restriction indicators for the filters are mounted on the
filter support inside the front door, and will shut down the compressor
if restriction exceeds recommended values.
Filter Replacement
With engine stopped, ensure pressure is relieved from air
system.
Remove all wires and hoses connected to drains on bottom of
each filter housing. Inspect fittings and hoses for any blockage.
Clean if necessary.
Using a chain wrench or similar tool, loosen the housing. The
housing should be removed by hand after loosening, taking care to
prevent the housing from falling to the floor panel.
Lower the housing to floor panel and lean it against the airend.
Remove and replace the filter element, being careful not to damage
outer wrap.
Verify the part number of new element vs. old element, as the
two IQ filters are of different media.
SAFETY
CAUTION: The compressor regulation system is adjusted to maintain
regulated pressure at the separator tank. DO NOT adjust regulation to
provide full regulation pressure at the service valve when the IQ
System is enabled. This will result in operation at excessive
horsepower levels, causing overheating, reduced engine life, and
reduced airend life.
CAUTION: Excessively restricted filter elements may cause an
increase in the amount of aerosol water and oil carryover, which could
result in damage to downstream equipment. Normal service intervals
should not be exceeded.
CAUTION: Blockage of the condensate will result in flooding of the
vessels. If flooding occurs, excessive condensate may enter the air
stream and could result in damage to downstream equipment.
NOTICE:
Do not operate at temperatures less that 2
C (35
F) unless equipped
with low ambient IQ option.
