Tefcold EXPRESS EX125C, Instruction Manual

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8.5 Refrigeration, Electrical and Drainage Connections
8.6.1 Refrigeration
There is one reciprocating type of compressor in TEFOCLD EXPRESS EX125C/EX187C/EX125CD
EX187CD/EX250CD cabinet (single circuit).
There are two reciprocating compressors in TEFCOLD EXPRESS EX250C cabinets
TEFCOLD EXPRESS cabinets are delivered refrigerants pre-charged at factory. Below
instructions are for servicing only.
Follow instructions below before operation:
•
Installation of the refrigeration and electrical components must be performed only by a
refrigeration engineer or licensed electrician.
•
Be sure that electric main supply is switched off. Avoid any sparks generation.
•
Evacuate the Nitrogen (N) holding charge (approx. 3bar) carefully then evacuate the systems
at least 45 minutes .
•
Charge Refrigerant into the system.
•
Plug -in the cabinet and run until setting temperature.
•
Do not add any oil to the Compressor.
Installation Instructions with Reciprocating Compressors
System Evacuation
It is recommended to evacuate system through liquid line and suction line at the same time.
Must assure no air and water get into the system while evacuating.
Above visuals are for example usage only
Never start the compressor while it is under deep vacuum, otherwise the compressor will be
damaged.
Never use the compressor to evacuate the system. Use a high vacuum pump specially design for
that purpose.