Johnson Controls Frick 852 User Manual

RWH ROTARY SCREW COMPRESSOR UNITS
INSTALLATION
070.620-IOM (DEC 12)
Page 9
COMPRESSOR UNIT OIL
WARNING
DO NOT MIX OILS of different brands, manufacturers, or
types. Mixing of oils may cause excessive oil foaming,
nuisance oil level cutouts, oil pressure loss, gas or oil
leakage and catastrophic compressor failure.
NOTICE
The Frick oil charge shipped with the unit is the best
suited lubricant for the conditions specied at the time
of purchase. If there is any doubt due to the refrigerant,
operating pressures, or temperatures, refer to Frick Oil
publication 160.802-SPC.
OIL CHARGE
The normal charging level is midway in the top sight
glass located midway along the oil separator shell. Nor-
mal operating level is midway between the top sight glass
and bottom sight glass. Refer to the engineering prints and
documents for the estimated lube oil charge.
Add oil by attaching the end of a suitable pressure type
hose to the oil drain valve, located in the separator pip
ing. Refer to the P & I drawing for exact location. Using
a pressuretype pump and the recommended Frick
®
oil,
open the drain valve and pump oil into the separator.
NOTICE
Evacuation of the oil separator will assist the ow of
oil into the unit. Also, ll slowly because oil will ll up
in the separator faster than it shows in the sight glass.
Oil distillers and similar equipment which act to trap
oil must be lled prior to unit operation to normal de
sign outlet levels. The same pump used to charge the
unit may be used for lling these auxiliary oil reservoirs.
NOTICE
The sight glass located in the coalescing end of the
separator near the discharge connection should remain
empty.
OIL HEATER(S)
Standard units are equipped with two or three 1000 watt oil
heaters, providing sufcient heat to maintain the oil tempera
ture for most indoor applications during shutdown cycles to
permit safe startup. Should insulation or additional heating
capacity be required because of low ambient temperature,
contact Johnson ControlsFrick
®
. The heaters are energized
only when the unit is not in operation.
WARNING
DO NOT ENERGIZE THE HEATERS when there is no oil
in the unit, the heat ers will burn out. The oil heat ers
will be energized whenever 120 volt control power is
applied to the unit and the com pressor is not run ning,
unless the 16 amp circuit breaker in the micro enclosure
is turned off.
HOT ALIGNMENT OF COMPRESSOR/MOTOR
WARNING
Hot alignments can only be made after the unit has
operated for several hours and all components are at
operating temperatures.
Shut down the unit (proper lockout/tagout procedures
should be followed) and QUICKLY afx dial indicator to
coupling motor hub, then take readings of both the face
and rim of the compressor hub. If these readings are within
tolerance, record reading, attach coupling guard and restart
unit. However, if the reading is not within limits, compare
the hot reading with the cold alignment and adjust for this
difference; i.e. if the rim at 0° and 180° readings indicates
that the motor rises .005" between its hot and cold state,
.005" of shims should be removed from under the motor.
After the initial hot alignment adjustment is made, restart unit
and bring to operating temperature. Shut down and recheck
hot alignment. Repeat procedure unit hot alignment is within
specied tolerance.
CAUTION
INSTALL COUPLING GUARD BEFORE OPERATING COM-
PRESSOR.
OIL PUMP COUPLING
Compressor units with direct motor/pump coupled pumps
need no pump/motor coupling alignment since this is main
tained by the closecoupled arrangement.
HOLDING CHARGE AND STORAGE
Each RWH compressor unit is pressure and leak tested at the
factory and then thoroughly evacuated and charged with dry
nitrogen to ensure the integrity of the unit during shipping
and short term storage prior to installation.
CAUTION
Care must be taken when entering the unit to ensure
that the nitrogen charge is safely released.
WARNING
Holding-charge shipping gauges on separator and
external oil cooler are rated for 30 PSIG and are for
checking the shipping charge only. They must be re-
moved before pressure testing the system and before
charging the system with refrigerant. Failure to remove
these gauges may result in catastrophic failure of the
gauge and uncontrolled release of refrigerant resulting
in serious injury or death.
All units must be kept in a clean, dry location to prevent
corrosion damage. Reasonable consideration must be given
to proper care for the solidstate components of the mi
croprocessor. Please contact Frick
®
service for long term
storage requirements.

Johnson Controls Frick 852 Specifications

General

Brand	Johnson Controls
Model	Frick 852
Category	Compressor
Language	English