Johnson Controls Frick 1179, Manual, Page: 3 / 64

RWH ROTARY SCREW COMPRESSOR UNITS
GENERAL INFORMATION
070.620-IOM (DEC 12)
Page 3
PREFACE
This manual has been prepared to acquaint the owner and
serviceman with the INSTALLATION, OPERATION, and MAIN­
TEN ANCE procedures as recommended by Johnson Controls
for Frick
®
RWH Rotary Screw Compres sor Units.
For information about the functions of the Quantum ™ LX
control panels, communications, specifications, and wiring
diagrams, see publication series 090.022­O, 090.020­M,
090.020­CS, and 090.020­SPC.
It is most important that these units be properly applied to an
adequately controlled refrigeration system. Your authori zed
Frick
®
representative should be con sulted for their expert
guidance in this determination.
Proper performance and continued satisfaction with these
units is dependent upon:
CORRECT INSTALLATION
PROPER OPERATION
REGULAR, SYSTEMATIC MAINTENANCE
To ensure correct installation and application, the equip ment
must be properly selected and connected to a properly de­
signed and installed system. The Engi neering plans, piping
layouts, etc. must be detailed in accor dance with the best
practices and local codes, such as those outlined in ASHRAE
literature.
A refrigeration compressor is a VAPOR PUMP. To be certain
that it is not being subjected to liquid refriger ant carryover
it is necessary that refriger ant controls are carefully selected
and in good operating condition; the piping is properly sized
and traps, if necessary, are provided with drains, liquid elimi­
nation and permissives; the suction line has an accumula­
tor or slugging protec tion; that load surges are known and
provisions made for control; operating cycles and de frost ing
periods are reasonable; and that high side condensers are
sized within system and compressor design limits.
It is recommended that the entering vapor temperature to
the compressor be superheated to 10°F above the refriger ant
saturation temperature. This assures that all refrigerant at
the compressor suction is in the vapor state.
DESIGN LIMITATIONS
The compressor units are designed for operation within
pressure and temperature limits determined by Frick. Refer
to applications brochure 070.500­SPC.
JOB INSPECTION
Immediately upon delivery examine all crates, boxes and
exposed compressor and com ponent surfaces for dam age.
Unpack all items and check against shipping lists for any
discrepancy. Examine all items for damage in transit.
TRANSIT DAMAGE CLAIMS
All claims must be made by consignee. This is an ICC re­
quirement. Request immediate inspection by the agent of
the carrier and be sure the proper claim forms are execut ed.
Report damage or shortage claims im mediately to Johnson
Controls Inc., Frick
®
Sales Ad ministration Depart ment, in
Waynes boro, PA.
COMPRESSOR and UNIT IDENTIFICATION
Each compressor unit has 2 identifica tion data plates. The
compressor data plate containing compressor model and
serial number is mounted on the compressor body.
NOTICE
When inquiring about the compres sor or unit, or order-
ing repair parts, provide the MODEL, SERIAL, and FRICK ®
SALES ORDER NUMBERS from these data plates.
UNIT DATA PLATE
Indicates an imminently hazardous situation which, if not avoided, will result in death or serious
injury.
Indicates a potentially hazardous situation or practice which, if not avoided, will result in death or
serious injury.
SAFETY PRECAUTION DEFINITIONS
Indicates a potentially hazardous situation or practice which, if not avoided, will result in damage
to equipment and/or minor injury.
Indicates an operating procedure, practice, etc., or portion thereof which is essential to highlight.
DANGER
WARNING
CAUTION
NOTICE