070.750-IOM2 (JUN 22)
Page 3
HPS 273 and 407 Rotary Screw Compressor
Installation - Operation - Maintenance
General information
Note: The information in this document is subject to
change without notice.
Introduction
This manual describes installation, operation, and main-
tenance procedures for HPS 273 and 407 rotary screw
compressors.
Notice
Frick screw compressor repair must only be done by
skilled mechanics who have completed training at
Frick screw compressor school.
It is most important that these compressors are correctly
applied to an adequately controlled refrigerant or gas
system. Consult your authorized Johnson Controls-Frick
representative for expert guidance in this determination.
Correct performance and continued satisfaction with these
units depends on the following factors:
• Correct installation
• Correct operation
• Regular, systematic maintenance
• Relevant package and system engineering
To ensure correct installation and application, select the
appropriate equipment and connect to a correctly de-
signed and installed system. The engineering plans, piping
layouts, for example, must be detailed in accordance with
the best practices and local codes, such as those outlined
in ASHRAE and EN codes.
A screw compressor is a vapor pump. To ensure that
working uid in the liquid state is not being ingested,
follow these checks:
• Select controls carefully. Make sure they are in good
operating condition.
• Correctly size piping and correctly arrange traps, if they
are necessary.
• Check that the suction line has an accumulator or slug-
ging protection.
• Know the load surges and make provisions for control.
• Check that operating cycles and stand still periods are
reasonable.
• Size high-side components within system and com-
pressor design limits.
HPS compressors have small clearances and the compres-
sor package and system must be built with a very high
degree of cleanliness.
Design limitations
HPS compressors are designed for operation within the
pressure and temperature limits, which are specied by
Johnson Controls-Frick and the Johnson Controls-Frick
selection software CoolWare™. They are primarily used for
compressing refrigerant gas and most hydrocarbon gasses.
If your application is for sour gas, there are special
requirements to protect the compressor. Contact Johnson
Controls-Frick Compressor Engineering for application
details.
Delivery inspection
Immediately after delivery examine all crates, boxes, and
exposed compressor and component surfaces for damage.
Unpack all items and check against shipping lists for any
discrepancy. Examine all items for damage in transit.
Standard bare compressor
Items not shipped with bare compressors that are available
include, but are not limited, the following components:
• Motor mount
• Connection ttings
• Coupling
• Solenoid valve manifold block assembly
• Balance piston pressure regulator (BPR) system.
– PLC controller for BPR system
• Service oil pump and ttings for manual calibration of
linear transmitters.
• Insulation jacket: easy on, easy off.
• Linear sensors in split version for higher temperatures.
• Suction and discharge anges
• Suction non-return valve
• Suction strainer
Transit damage claims
All claims must be made by the consignee. This is an ICC
requirement. Request immediate inspection by the agent
of the carrier and be sure to execute the correct claim
forms. Report damage or shortage claims immediately to
Johnson Controls-Frick Sales Administration Department
in Waynesboro, PA.
Compressor identication
Each compressor has an identication data plate, contain-
ing compressor model, and serial number mounted on the
compressor body.
Notice
When inquiring about the compressor or unit, or
ordering repair parts, provide the model, serial, and
Frick sales order numbers from the data plates.
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