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The following statements are specifically applicable to this refrigeration unit and appear elsewhere in this manual.
These recommended precautions must be understood and applied during operation and maintenance of the equip-
ment covered herein.
• Unit may start automatically at any time even if the switch is in the OFF position. Use proper lockout/
tagout procedures before inspection/servicing. All unit inspection/servicing by properly trained personnel
only.
• Be aware of HIGH VOLTAGE supplied at the power plug or from the generator. When performing service
or maintenance procedures: ensure any two way communication is disabled in accordance with the man-
ufacturer’s instruction, ensure the START/RUN-OFF switch is in OFF position and, whenever practical,
disconnect the high voltage source, lockout/tagout the receptacle and disconnect the negative battery
connection.
• Under no circumstances should ether or any other starting aids be used to start engine.
• Do not connect power plug to any electrical outlet without checking that it meets the 460/3/60 and 30
Amp electrical requirements of the unit. Ensure the power plug is clean and dry before connecting to any
electrical outlet / receptacle.
• Do not toggle the START/RUN - OFF switch out of the OFF position when in PC Mode or the unit will
start.
• When performing service or maintenance procedures: ensure any two way communication is disabled in
accordance with the manufacturer’s instruction, ensure the START/RUN-OFF switch is in OFF position
and, whenever practical, disconnect the negative battery connection.
• Do not remove the cap from a hot coolant system; if the cap must be removed, do so very slowly in order
to release the pressure without spray.
• Caution and good electrical practices must be used when working around and with high voltage circuits.
• Beware of moving belts and belt-driven components. When working with belts, beware of pinch points.
• Only a refrigerant cylinder that has previously been used with R-452A refrigerant should be connected to
this refrigeration unit.
• Never use air or gases containing oxygen for leak testing or operating refrigerant compressors. Pressur-
ized mixtures of air or gases containing oxygen can lead to explosion.
• Disconnect batteries before doing any electrical welding.
• Inspect battery cables for signs of wear, abrasion or damage at every pre-trip inspection and replace if
necessary. Also check battery cable routing to ensure that clamps are secure and that cables are not
pinched or chafing against any components.
• Use the required protective eye wear and clothing when working with solvents.
• Only a refrigerant cylinder containing R-452A refrigerant should be connected to this refrigeration unit in
order to pressurize the system. However, dry nitrogen may be used to increase pressure. Any other gas
or vapor will contaminate the system and require additional removal and evacuation.
• Do not use a nitrogen cylinder without a pressure regulator. Cylinder pressure is approximately 2350 psig
(159.9 bar). Do not use oxygen in or near a refrigerant system as an explosion may occur.
• Before removal of the compressor, relieve the internal pressure by very carefully loosening the couplings
to break the seal.
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