8
Systems, Controls and Operations
Model C602
Running Specifications
Pressures/Temperatures
The following are the Taylor Company
recommended settings for various components in
the Model C602. (See page 9 for the Refrigeration
System Schematic.)
Expansion Valve
Soft Serve
Air Cooled: 20 - 22 psi. (138 - 152 kPa)
Water Cooled: 20 - 22 psi. (138 - 152 kPa)
for a normal product of 16_ -18_F. (-8.8_to -7.7_C).
Shake
Air Cooled: 38 - 39 psi. (262 - 269 kPa)
Water Cooled: 38 - 39 psi. (262 - 269 kPa
for a normal product of 24_ -26_F. (-4_C).
Note: Triple Thick Shake product temperature is
22_-24_F. (-5_C).
Expansion Valve Adjustment
Connect your refrigerant gauge to the low side
access valve. Turn the access valve
counter-clockwise to open the valve.
Adjust the pressure higher or lower by turning the
expansion valve adjustment screw. Clockwise turns
will raise the pressure and counterclockwise will
lower the pressure.
Note: Make expansion valve adjustments with mix
in the freezing cylinder and the freezer in the AUTO
mode. Be sure to allow adequate time for the
pressure to stabilize.
Turn the access valve clockwise to close the valve.
Install and securely tighten the access valve caps
and the expansion valve cap.
Low Side (Suction)
Suction pressure equals 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 Adju stment
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.
Connect your refrigerant gauge to the high side
access valve. Turn the access valve counter-
clockwise to open the valve. Turning the adjustment
stem on the water valve clockwise will lower the
pressure.
Turn the access valve clockwise to close the valve.
Install and securely tighten the access valve caps.