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22
REFRIGERATED BASES & PIZZA PREP TABLES
OPERATIONS MANUAL
REMOTE SET-UP AND INSTALLATION GUIDELINES
All remote refrigerators and freezers are shipped with an expan-
sion valve, thermostat and defrost timer (freezer only), installed
from the factory. The installer is responsible for connecting all
refrigerant lines, liquid line drier, sight glass, solenoid, head
pressure control, hi/low pressure safety, crankcase heater, con-
densing unit and any other accessories as well as wiring. The
evaporator section has been factory leak checked with helium,
however; due to vibration in transit, the entire system must be
thoroughly leak checked after installation and prior to start-up.
The final leak inspection of the entire completed refrigeration
system and all of its components as well as start-up and the
operation of the refrigeration system is the sole responsibility
of the installer.
The CFC-Free refrigerant used in standard remote and self-
contained models is R-134a for refrigerators and R-404A for
freezers. All compressors and systems designed for these
refrigerants utilize polyolester oil as their main lubricant, which
absorbs moisture from the ambient surroundings extremely fast
and in much greater quantity than conventional mineral oils.
Since moisture levels greater than 100 PPM will result in system
corrosion and ultimate failure, it is imperative that the compres-
sor, components and entire system be kept sealed.
1. All refrigerant lines and components must be clean, free of
burrs and purged with nitrogen prior to and during brazing
or soldering connections. Nitrogen purging during braz-
ing or soldering will eliminate carbon or foreign matter
contamination. Any system restrictions or contamination is
the responsibility of the installer.
2. Condensing unit or compressor shall not be left open to
the atmosphere for more than five (5) minutes.
3. No refrigeration component, tubing or fitting shall be left
open to the atmosphere for more than ½ hour without
being soldered, capped or plugged.
4. Each completed refrigeration system shall be purged with
150psi of dry nitrogen for at least six (6) seconds, then
pressurized with at least 165psi of nitrogen for pressure
check (making sure to energize any solenoid valves to
assure access). Leak-check all joints, flare fittings and
valves and make sure there is no pressure drop within the
system.
5. System evacuation is of the utmost importance with NON-
CFC refrigerant systems. System must be evacuated to a
minimum of 200 microns. In addition, a vacuum decay
test is strongly recommended to assure there is not a
large pressure differential between the system and vacuum
pump. System must be evacuated from both high and low
sides of the system using heavy duty vacuum hoses.
FIGURE 18A: Pan Slide Cage - Center Bracket
FIGURE 18B: Pan Slide Cage - Install Screws
FIGURE 18C: Pan Slide Cage - Install Angle Slides
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