Kairak KPR User Manual

ITEM #_______________________________________

Remote Refrigeration System (KPR Model)

Product Details

WATER-COOLED SYSTEM

Parallel compressor rack employs parallel-piped

scroll compressors (Copeland) for medium

temperature & for low temperature, a control

panel, oversized water-cooled condenser and

receiver all mounted on one common structural

steel frame. The control panel contains all the

necessary controls for food service fixtures

and motors, and is factory wired to the motor

compressors, the inter-connected motor

compressors act as one condensing unit with

capacity control obtained by cycling individual

compressors using solid state pressure

controller. The compressor staging controls

parallel piped refrigeration compressors with

cut-in / cut-out suction pressure settings.

The suction algorithm uses pressure reading

from the suction transducer to determine the

number of stages that should be active in order

to reach the defined set points. The system

includes an electronic control staging of the

compressors to match the refrigeration by

means of the pressure transducer. A software

program is provided to allow monitoring of the

set points from a personal computer.

Each unit is equipped with a replaceable core

liquid line filter-drier, moisture indicator and

hand valve mounted between the receiver

outlet valve and the liquid manifold. There

is also a replaceable core-suction line filter

mounted between each compressor and the

main suction header.

Individual branch circuits are connected to

liquid and suction line manifolds at the rack.

To achieve multiple evaporating temperatures

within a medium or low temperature range, EPR

valves with suction-stop are used.

Fixture thermostat and liquid line solenoid

valve combinations are employed for accurate

temperature and humidity control.

All units are new and factory assembled to

operate with the refrigerant specified in the

refrigeration engineering summary sheet.

R-404A refrigerant is used on all commercial and

low temperature units.

OIL EQUALIZATION SYSTEM

Each unit is equipped with an oil separator in

conjunction with an oil equalization system

to assure a proper amount of oil to each

compressor whether running or cycled off for

continuous proper lubrication.

Each oil equalization system is equipped with

oil reservoir, oil return filter/drier automatic

oil level regulators for each compressor and

interconnecting tubing per schematic diagram.

The oil level control system incorporates

isolation valves to facilitate serviceability and

minimize system contamination.

EVAPORATOR COIL

Evaporator coils are direct expansion type

fabricated of copper tubes with aluminum

fins. All evaporator coils are provided with

solenoid valve, thermostatic expansion valve

and thermostat. Piped and wired ready for final

connection by the electrical and refrigeration

contractors.

Models

PARATROL WATER-COOLED PACKAGE

KPR

Features

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Fabricated of galvanized steel.

»

Frame is pre-assembled, welded, cleaned and
finished in baked enamel epoxy based paint.

Exhaust fan motors are mounted on top of the

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enclosure.

Options

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Housed in stainless steel enclosure

»

Remote, Air-Cooled or Water-Cooled Condensing
units.

»

460 Volt Operation

»

Alarm Package

»

Floor Heating Recovery System

Standard Warranty

Five (5) Year Compressor

»

One (1) Year Parts and Labor

»

Remote Refrigeration System (KPR Model)

NSF7

www.KAIRAK.com

500 S. State College Blvd., Fullerton, California 92831
Toll-Free: 800-833-1106 Phone: [phone] Fax: [phone]

KPR-07-31 / 09-24-07
Made in the U.S.A.