9
Models C706 & C707
Introduction
Running Specifications
Pressures/Temperatures
The following are the Taylor Company recommended
settings for various components in the models C706
and C707. These freezers use Refrigerant HP62
(R404A).
Expansion Valve
Soft Serve
Air Cooled: 20 -- 22 psi. (138 -- 152 kPa)
W ater Cooled: 20 to 22 psi. (138 to 152 kPa) for a
normal product of 16_ to 18_F. (-8.8_to -7.7_ C.).
Expansion Valve Adjustment
Place your gauge on the access valve on the suction
line (located at the compressor).
Adjust the pressure higher or lower by turning the
adjustment screw. Clockwise turns will raise the
pressure and counterclockwise turns will lower the
pressure.
Note: Make expansion valve adjustments with mix in
the cylinder and the freezer in the AUTO mode. Be
sure to allow adequate time for the pressure to
stabilize.
Low Side (Suction)
Suction pressure equals the expansion valve setting.
High Side (Discharge)
High side pressure varies for air cooled units,
depending on the ambient temperature.
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)
Water Valve
On a water cooled unit, the water valve should be set
to maintain a compressor head pressure of 255 psi.
(1,758 kPa).
Water Valve Adjustment
Place your gauge on the high side access port of the
compressor. Turning the adjustment stem on the water
valve clockwise will lower the pressure.
Note: Make this adjustment with mix in the cylinder
and the freezer in the AUTO mode. Be sure to allow
adequate time for pressure to stabilize.
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