8
Introduction
Models 150, 152, 162, 168
Running Specifications
The following are the pressure and temperature
settings recommended by the Taylor Company and
apply to all models covered in this manual.
Expansion Valve
Pressure setting: 502 = 18 to 20 PSI
(124 to 138 kPa).
HP62 & HP 81 = 20 to 22 PSI
(138 to152 kPa)
Normal product temperature should range between
18_Fto20_F (-7.8_Cto-6.7_C).
Mix hopper and standby temperature should range
between 38_Fto40_F(3.3_Cto4.4_C).
High Side
Head pressure on air cooled unitsvaries dependingon
ambient temperatures.
Air Cooled: The following chart indicates normal
operating head pressures at various ambient
temperatures.
Ambient
Temperature
Normal Operating
Head Pressures
F. C. PSI
70_ 21.1_ 240 - 270 (1,655 - 1,862 kPa)
80_ 26.7_ 270 - 300 (1,862 - 2,069 kPa)
90_ 32.2_ 300 - 340 (2,069 - 2,344 kPa)
100_ 37.8_ 340 - 380 (2,344 - 2,620 kPa)
Note: This chart applies to units using R502 or 404A
refrigerant.
Low Side
Low side pressure is determined by the expansion
valve setting. Adjust the pressure higher or lower by
turning the adjustment knob on the expansion valve.
Clockwise adjustments will raise the pressure, and
counterclockwise adjustments will lower the pressure.
Note: Make expansion valve adjustments with mix in
the freezing cylinder and with the machine in the
“AUTO” mode. Allow adequate time for pressure to
stabilize.
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