070.610-IOM (JUL 21)
Page 3
RWF II Rotary Screw Compressor Units
General Information
General information
Preface
This manual describes the installation, operation, and
main ten ance procedures of the Frick
®
RWF II Rotary
Screw Compres sor Units.
For information about the functions of the
Quantum
™
HD
control panels, communications, specifications, and wiring
diagrams, see publication series
090.040-O, 090.040-M,
090.040-CS,
and
090.040-SPC.
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
• Correct operation
•
Regular, systematic maintenance
To ensure correct installation and application, select and
connect the equip ment to a correctly designed 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 ensure
that it is not being subjected to liquid refriger ant carry
-
over 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 correct ly ar-
ranged; the suction line has an accumulator 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 ensures that all
refrigerant at the compressor suction is in the vapor state.
Design limitations
The compressor units are designed for operation within
the pressure and temperature limits as shown in Frick
publication
070.610-SED
.
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
requirement. Request immediate inspection by the agent
of the carrier and be sure the correct 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.
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. The
unit data plate
containing unit model, serial number and
Frick sales order number is mounted on the side of the
Quantum
™
HD control panel.
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.
Figure 1: 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.
WARNING
CAUTION
DANGER
NOTICE
NOTICE
Trained personnel are required for handling and in-
stallation.