Henny Penny BFR/BCR-350 - Manual (Page 16)

Model BCC/BCR-140, BCC/BCR-175, BFR/BCR-350
2-9. REMOTE CONDENSING
UNITS INFORMATION
(Continued) Running Range of Condensing Units
Evaporation temperatures, 32
o F(0°C)/-4 o F(-20°C)/-40°F(-40°C),
are used for refrigeration capacity selection. But evaporation
temperatures can be higher and lower than these values during the
cycle, depending on temperature, quantity, type and packing of the
food.
The remote condensing unit have to be able to run into the ranges
below.
• Blast Chillers : 45°F (7°C)/-22°F (-30°C)
• Blast Freezers and Combined : -4°F(-20°C)/-49°F (-45°C)
If remote condensing unit cannot run at the highest value of the
required running range, it is necessary to put a pressure regulat-
ing valve on the suction line of the compressor unit, in order to
keep the evaporation temperature of condensing unit into the
Blast Chiller/Freezer’s selection range.
Usually the range is on the data sheet of remote condensing units,
and refrigeration capacities are written for these temperatures.
2-10 605
2-10. OPERATION CHECKLIST Using a container 4 inches (100 mm) deep, filled with hot water, insert
the Frigiprobe into the water and start the unit in the chilling mode.
Refer to the graph at left.
• The water temperature is probably below 145 o F (63 o C), so phase
1 won’t be seen. The unit goes directly to phase 2.
• In phase 2, check that the compressor is regulating the air tempera-
ture limitation at around -4 o F (-20 o C). Use P02 information to
read the air temperature, page 3-10.
• In phase 3, check that the compressor is regulating the air tempera-
ture limitation at around 32 o F (0 o C). Use P02 information to
read the air temperature, page 3-10.
• In phase 4, check that the compressor is regulating the air tempera-
ture limitation at around 37 o F (3 o C). Read the air temperature
directly from the display.