Frick XJS 95M User Manual

070-450 IOM (NOV 13)
Page 21
XJF ROTARY SCREW COMPRESSOR
OPERATION - MAINTENANCE
070-450 IOM (NOV 13)
Page 21
OPERATION
OPERATION AND START-UP INSTRUCTIONS
The Frick XJF Rotary Screw Compressor will be a component
in an integrated system. As such the compressor requires
some specic operation and conditions to ensure trouble-
free running.
The information in this section of the manual provides the
logical step-by-step instructions to properly start up and
operate the XJF Rotary Screw Compressor in your Unit.
Only matters which may inuence the proper operation of
the XJF compressor are included.
NOTICE
THE FOLLOWING SUBSECTIONS MUST BE READ AND
UNDERSTOOD BEFORE ATTEMPTING TO START OR
OPERATE THE UNIT.
INITIAL START-UP
Prior to the start-up, the prestart check must be
accomplished. See Prestart Checklist in FORMS section of
this manual.
INITIAL START-UP PROCEDURE
Having performed the prestart check, the compressor unit
is ready for start-up. It is important that an adequate gas
load be available to load test the unit at normal operating
conditions. The following points should be kept in mind
during initial start-up.
1. For proper and safe operation, the compressor must be
run at the proper speed and discharge pressure. Exceeding
design conditions creates a potential hazard.
2. After 1 to 3 hours of operation adjust oil cooling system.
3. Pull and clean suction strainer after 24 hours of operation.
If it is excessively dirty, repeat every 24 hours until system
is clean. Otherwise, follow the normal maintenance
schedule.
4. Perform vibration analysis if equipment is available.
NORMAL START-UP PROCEDURE
1. Conrm system conditions permit starting the
compressor.
2. Start.
3. Observe the compressor unit for mechanical tightness of
the external piping, bolts and valves. Ensure that the
machine has no oil and vapor leaks. If any of these occur,
shut down the compressor and correct the problem as
necessary using good safety precautions.
MAINTENANCE
GENERAL INFORMATION
This section provides instructions for normal maintenance,
a recommended maintenance program, and troubleshooting
and correction guides.
WARNING
THIS SECTION MUST BE READ AND UNDERSTOOD BE-
FORE ATTEMPTING TO PERFORM ANY MAINTENANCE
OR SERVICE TO THE UNIT.
CAUTION
Cylinder assembly under high spring load. Consult
manual before disassembly. Improper disassembly may
cause injury due to spring tension release.
NORMAL MAINTENANCE OPERATIONS
When performing maintenance you must take several
precautions to ensure your safety:
1. IF UNIT IS RUNNING, PRESS [STOP] KEY.
2. STOP MOTOR AND LOCK OUT STARTER BEFORE
PERFORMING ANY MAINTENANCE.
3. WEAR PROPER SAFETY EQUIPMENT WHEN
COMPRESSOR UNIT IS OPENED TO ATMOSPHERE.
4. ENSURE ADEQUATE VENTILATION.
5. TAKE NECESSARY SAFETY PRECAUTIONS REQUIRED
FOR THE GAS BEING USED.
GENERAL MAINTENANCE
Proper maintenance is important in order to assure long and
trouble-free service from your screw compressor. Some areas
critical to good compressor operation are:
1. Keep oil clean and dry, avoid moisture contamination.
After servicing any portion of the refrigeration system,
evacuate to remove moisture before returning to service.
Water vapor condensing in the compressor while running
or more likely while shut down, can cause rusting of critical
components and reduce life.
2. Keep suction strainer clean. Check periodically,
particularly on new systems where welding slag or pipe
scale could nd its way to the compressor suction. Excessive
dirt in the suction strainer could cause it to collapse,
dumping particles into the compressor.
3. Keep oil lters clean. If lters show increasing pressure
drop, indicating dirt or water, stop the compressor and
change lters. Running a compressor for long periods with
high lter pressure drop can starve the compressor of oil
and lead to premature bearing failure. Dual oil lters are
recommended so that the lters can be changed without
shutting down the package.
4. Avoid slugging the compressor with liquids (oil). While
screw compressors are probably the most tolerant of any
compressor type available today about ingestion of some
liquid, they are not liquid pumps. Make certain a properly
sized suction accumulator is used to avoid dumping liquid
into compressor suction.

Frick XJS 95M Specifications

General

Brand	Frick
Model	XJS 95M
Category	Air Compressor
Language	English