Ecoair D100, Operation And Maintenance Manual

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MAINTENANCE
38
D60 D75
D100 D102
ROUTINE MAINTENANCE
This section refers to the various components which require
periodic maintenance and replacement.
The
SERVICE/MAINTENANCE CHART indicates the various
components’ descriptions and the intervals when maintenance has to
take place. Coolant capacities, etc., can be found in the
GENERAL
INFORMATION section of this manual.
CAUTION: Before beginning any work on the compressor, open,
lock and tag the main electrical disconnect and close the isolation
valve on the compressor discharge. Vent pressure from the unit
by slowly unscrewing the coolant fill cap one turn. Unscrewing
the fill cap opens a vent hole, drilled in the cap, allowing pressure
to release to atmosphere. Do not remove the fill cap until all
pressure has vented from the unit. Also vent piping by slightly
opening the drain valve. When opening the drain valve or the
coolant fill cap, stand clear of the valve discharge and wear
appropriate eye protection.
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:–
. 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.
. the machine cannot be started accidently or otherwise, by posting
warning signs and/or fitting appropriate anti–start devices.
. 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:–
. anyone entering the machine is aware of the reduced level of
protection and the additional hazards, including hot surfaces and
intermittently moving parts.
. 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:–
. the work carried out is limited to only those tasks which require the
machine to run.
. 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.
. all hazards present are known (e.g. pressurised components,
electrically live components, removed panels, covers and guards,
extreme temperatures, inflow and outflow of air, intermittently moving
parts, safety valve discharge etc.).
. appropriate personal protective equipment is worn.
. loose clothing, jewellery, long hair etc. is made safe.
. 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:–
. the machine is suitably tested.
. all guards and safety protection devices are refitted.
. all panels are replaced, canopy and doors closed.
. hazardous materials are effectively contained and disposed of.
WARNING
Do not under any circumstances open any drain valve or remove
components from the compressor without first ensuring that the
compressor is FULLY SHUT– DOWN, power isolated and all air
pressure relieved from the system.
INITIAL COMMISSIONING AND DECOMMISSIONING
Inspection for damage in transit
Every screw compressor has been subjected to a factory test, and
has been carefully inspected prior to shipment. Inspection ensures that
the compressor corresponds to the indicated technical data and works
properly. However, despite careful factory inspection it may happen
that the compressor is damaged in transit. For this reason it is
recommended to inspect the compressor for possible transport
damage. Observe the compressor during the initial operating time so
that any malfunction may be discovered.
Maintenance work
For maintenance work prior to initial commissioning see
Maintenance schedule.
Decommissioning
If the compressor is decommissioned for a prolonged time (more
than approx. 3 months), take care to perform the same maintenance
work prior to re–commissioning as has been specified for initial
commissioning (see Maintenance schedule).
COMPRESSOR
Depressurization of compressor
WARNING
Whenever performing any work on the compressor package,
make sure that the package is previously completely
depressurized.