10.0 MAINTENANCE
IRN37–160K–CC & IRN50–200H–CC & IRN75–160K–2S & IRN100–200H–2S
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Compressed air can be dangerous if incorrectly
handled. Before doing any work on the unit, ensure
that all pressure is vented from the system and that
the machine cannot be started accidentally.
Ensure that maintenance personnel are adequately
trained, competent and have read the Maintenance
Manuals.
Prior to attempting any maintenance work,
ensure that:–
S
all air pressure is fully discharged and isolated
from the system. If the automatic blowdown valve
is used for this purpose, then allow enough time
for it to complete the operation.
S
the machine cannot be started accidently or
otherwise, by posting warning signs and/or fitting
appropriate anti–start devices.
S
all residual electrical power sources (mains and
battery) are isolated.
Prior to opening or removing panels or covers to
work inside a machine, ensure that:–
S
anyone entering the machine is aware of the
reduced level of protection and the additional
hazards, including hot surfaces and intermittently
moving parts.
S
the machine cannot be started accidently or
otherwise, by posting warning signs and/or fitting
appropriate anti–start devices.
Prior to attempting any maintenance work on a
running machine, ensure that:–
S
the work carried out is limited to only those tasks
which require the machine to run.
S
the work carried out with safety protection devices
disabled or removed is limited to only those tasks
which require the machine to be running with
safety protection devices disabled or removed.
S
all hazards present are known (e.g. pressurized
components, electrically live components, removed
panels, covers and guards, extreme temperatures,
inflow and outflow of air, intermittently moving
parts, safety valve discharge etc.).
S
appropriate personal protective equipment is worn.
S
loose clothing, jewelry, long hair etc. is made safe.
S
warning signs indicating that Maintenance Work is
in Progress are posted in a position that can be
clearly seen.
Upon completion of maintenance tasks and prior
to returning the machine into service, ensure
that:–
S
the machine is suitably tested.
S
all guards and safety protection devices are
refitted.
S
all panels are replaced, canopy and doors closed.
S
hazardous materials are effectively contained and
disposed of.
10.4 ROUTINE MAINTENANCE
This section refers to the various components which
require periodic maintenance and replacement.
For all other maintenance, contact your local
Ingersoll–Rand office, Distributor or Air Center.
Refer to safety information and maintenance
procedures prior to carrying out any of the
maintenance in the following sections.
Prior to starting
Coolant level checking procedure
The coolant level should be checked daily. A coolant
level sight glass is located on the side of the
separator tank and while the machine is running on
load, coolant should always be visible in the sight
glass. The normal position is half way.
Adding coolant
Run the compressor for a minimum of 40 seconds,
the coolant level should be visible in the sight glass.
If not, stop the compressor, depressurize by isolating
the compressor from the system, pressing the
emergency stop to vent the separator tank & airend &
then slowly unscrew the coolant fill plug to verify all
pressure has been released and add coolant.
Replace the coolant fill plug, restart the compressor
and recheck the coolant level. Repeat until the
coolant level is visible in the sight glass with the
compressor running.
Do not add coolant through the intake of the
compressor, as this can result in overfilling, saturation
of the separator filter element, and coolant carry–over
downstream.
DANGER
Under no circumstance should the compressor
be operated with the coolant fill plug removed.