Taylor C712, Service Manual

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1-8
INTRODUCTION
Models C712/C713
Introduction
1
Running Specifications
Pressures/Temperatures
The following are the Taylor recommended settings for
various components within these models. The freezers in
this manual use refrigerant R404A.
Expansion Valve (AXV)
Air-Cooled - 21 psi (145 kPa)

Water-Cooled - 21 psi (145 kPa)

for a normal product of 16
°
F to 18
°
F (-8.8
°
C to -7.7
°
C)
Expansion Valve Adjustment (AXV)
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 raise the pressure
and counterclockwise turns 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 expansion valve setting.
High Side (Discharge)
High side pressure varies for air-cooled machines,
depending on the ambient temperature.
Table 1-3
Water Valve
On a water-cooled machine, 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. Make sure to allow
adequate time for the pressure to stabilize.
Ambient Temperature
Normal Operating Head
Pressures
F C PSI
70
°
21.1
°
240–270
(1,655 kPa–1,862 kPa.)
80
°
26.7
°
270–300
(1,862 kPa–2,069 kPa.)
90
°
32.2
°
300–340
(2,069 kPa–2,344 kPa.)
100
°
37.8
°
340–380
(2,344 kPa–2,620 kPa.)