Russell MPl-2CZ User Manual

Model MPL-2CZ

Air Cooled
Refrigeration
Systems

MINI-PAK REFRIGERATION SYSTEM

CONTROL PANEL

INTERNAL REFRIGERATION PIPING

COMPRESSOR AND CONDENSER SYSTEMS

FRAME AND HOUSING

221 S. Berry St., P.O. Box 1030, Brea, CA 92622-1030 • Tel [phone] • FAX [phone]

The packaged refrigeration system is to be U.L. Listed and will be
located on a pad outside of the building. This unit includes the
outdoor weather housing, compressor and condenser systems and
electrical control panel, all housed within a single assembly. The
evaporator coil assemblies will be supplied with all the required

options and accessories. All of the component parts, options and
accessories will be provided, mounted, piped and wired, as required
by the manufacturer. The system shall be manufactured to operate
at: _______ volts, ________ phase, ________hertz.

The outdoor weather shall include a welded, de-burred and cleaned
structural steel base frame made of 12 gauge. The exterior housing
and access doors will be manufactured of a minimum of 16 gauge
galvanized steel which has been assembled and cleaned. The

frame and housing shall be painted with a primer coat of epoxy
based paint and finished with a coat of polyurethane acrylic enamel.

All compressors will be Copelaweld, Copelametic or Discus. All
compressors will be manufactured to operate with R-22 or R-404A
refrigerant. Each Compressor system shall be filled with refrigerant
compatible refrigeration oil by the manufacturer and will include
discharge and suction line vibration protection (vibrasorbers
Copelametic and Discus compressors), dual pressure control, liquid
line filter-dryer, moisture indicating sight glass, and crankcase
heater. Each of these systems shall also include a receiver tank
capable of accepting all of the system refrigerant without exceeding
90% of its volumetric capacity. Each receiver will be provided with a
pressure relief vent and, at its outlet, a roto-lock isolation valve with

a service port. Additionally, all compressor systems that will operate
at suction temperatures below 0°F shall include a suction line
accumulator.

The condenser system shall include the Multi-Circuited condenser,
¹⁄₂ horse power condenser fan motors with 20 inch fan blades

mounted in a venturi contoured air-scoop protected by plastic coated
fan guards, and flooded headpressure controls. The compressors
and condenser circuits shall be sized to operate at an average
temperature differential between the ambient and condensing
temperatures of 20°F.

The interior mounted, weather proof, electrical control panel will be
manufactured of 16 gauge galvanized steel which has been
assembled, welded, de-burred and cleaned. The control panel shall
be protected by an exterior mounted NEMA 3R rated fused
disconnect switch and will include a removable cover, circuit
breakers and contactors for each compressor, required defrost time

clocks; and circuit breakers, start capacitors, and fan cycle control
thermostats for each of the condenser fan motors. A wiring diagram
of the refrigeration system shall be provided and mounted inside of
the refrigerated system. All internal wiring shall be held in place with
fasteners and individually numbered. The wire numbers shall be
shown on the wiring diagram

All of the internal refrigeration piping shall be extended to one side
of the refrigeration system in a neat and orderly manner. Each set
of piping shall have a label permanently affixed identifying the
system it will service. All internal refrigeration piping shall be
refrigerant grade A.C.R. or type L copper tubing. All tubing shall be
held in place with Uni-Strut channels and clamps and protected with
neoprene grommets. A minimum of

¹⁄₂ inch thick insulation shall

cover all suction lines.

After circuiting the condenser shall be tested for leaks at a minimum
pressure of 500 pounds per square inch/gauge (psig). After final
assembly the entire system shall be tested for leaks at 300 psig and
evacuated pressure test at 500 microns at the factory. The
refrigeration system shall be shipped with a 25 psig charge of dry
nitrogren.

EVAPORATOR COILS

The evaporator assemblies, and the parts associated with them, will
be mounted inside of the walk-ins. Each evaporator coil shall
include a matching thermostatic expansion valve, liquid line solenoid
valve and thermostat. In cases where two (2) or more evaporator

coils are to be piped to a single compressor the thermostat and liquid
line solenoid valve will be shipped loose to be mounted and wired at
the job site.

ITEM #_______

Model MPL-2CZ

Air Cooled
Refrigeration
Systems

U

L

®

C

US

DIMENSIONAL DATA

PHYSICAL DATA

COMPRESSOR DATA

MEA

Maximum Maximum Number Typical Overall Dimensions (In.) Approx.

Total Number of of Weight

HP* Comp. (Spaces)** Fans Length Width Height (lbs.)

7.0

4 – Semi-Hermetic

2723636

³⁄₄ 750-1100

5–Hermetic

System Item Fixture Description Freon Compressor Voltage Evaporator(s) Voltage

* Total compressor HP will be determined by comp(s). used.
**

¹⁄₂ - 3 HP = 1 comp. space, 5 HP = 2 comp. spaces.

Note: Compressors are designed with matching evaporator coil. Consult factory for specific electric data.

Specification subject to change without prior notice.

221 S. Berry St., P.O. Box 1030, Brea, CA 92622-1030 • Tel [phone] • FAX [phone]