Low ambient - winter operation, Service parts list, Service parts list low ambient - winter operation – Bally Refrigerated Boxes BCH Direct Drive Air-Cooled – Horizontal Air User Manual
Page 4
SERVICE PARTS LIST
LOW AMBIENT - WINTER OPERATION
* Based on temperatures (density) of refrigerant at 0 °F
To calculate the partially flooded refrigerant charge for specific ambient temps and application
follow the recommended charging instructions supplied by the valve manufacturer.
When selecting a BALLY “BCH” AIr Cooled Condenser
that will operate during the winter, some method of
controlling the head pressure must
be considered. At temperatures lower than 50 °F the
condenser will be oversized, resulting in low head
pressure. This in turn will cause poor expansion valve
operation and unstable evaporator performance. This
may result in unsatisfactory system performance and
potential compressor failure. BALLY recommends the
“Flooded - Condenser” method of head pressure
control.
Since additional liquid refrigerant is required, the
system must be designed to allow enough
refrigerant to fill the condenser as well as the
receiver in order to maintain a liquid seal. The
receiver must also be sized accordingly to contain
this extra refrigerant during a pump-down or when
operating at higher ambient conditions (summer).
Depending on the actual low ambient temp (0 °F
to -40 °F) and application (High, Med, Low) the
flooded condenser pressure control will flood the
condenser anywhere from 70 to 97% full of liquid.
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Due to Manufacturer’s policy of continuous product improvement, the Manufacturer reserves the right to make changes without notice.
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