Running Specifications - Taylor 104 Service Manual

Running Specifications

The following are the pressure and temperature
settings recommended by Taylor for the Models 104
and 220.
Pressures
Thermostatic Expansion Valve (Suction)
Suction pressure will vary in batch style freezers due
to mix formulation, temperature, etc. At the beginning
of a freeze cycle the thermostatic expansion valve will
be wide open (high suction pressure). The Model 104
will be approximately 28 PSI. The Model 220 will be
approximately 22 PSI.
Thermostatic Expansion Valve Adjustment
Adjust higher or lower by removing the large hex cap
and rotating the slotted adjustment stem. A clockwise
adjustment will lower
counterclockwise adjustment will raise the pressure.
Note: Make this adjustment with mix in the cylinder
and the unit in the AUTO mode. Allow adequate time
for the pressure to stabilize.
High Side (Compressor)
Head pressure on air cooled units varies depending on
the ambient temperature. The following chart shows
normal operating pressures at various ambient
temperatures.
Ambient
Temperature
F. C.
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 R404A
refrigerant.
070308
Introduction
the pressure and a
Normal Operating
Head Pressures
PSI
Water Valve
On water cooled units, the water valve should be set
to maintain a compressor head pressure of 225--240
PSI (1551 -- 1,655 kPa).
Water Valve Adjustment
Place a gauge on the high side access port of the
compressor. Turning the adjustment stem on the water
valve clockwise will lower the pressure. Turning the
stem counterclockwise will raise the pressure.
Note: Make this adjustment with mix in the freezing
cylinder, and the unit in the AUTO mode. Allow
adequate time for the pressure to stabilize.
Temperature
Product
Model 104: Finished product temperature should be
between 18_F to 22_F (--7.8_C to --5.6_C).
Model 220: Finished product temperature should be
between 23_F to 25_F (--5.0_C to --3.8_C).
Temperature Adjustment
Clockwise is the coldest setting, 22_F (--5.5_C).
Counterclockwise is the warmest setting, 26_F
(--3.3_C). The temperature control is factory set, but
should be checked. It is important that the coldest
setting not go below 22_F (- -5.5_C).
Hopper
The mix hopper is refrigerated directly from the main
refrigeration system and is designed to keep mix at a
safe temperature during freezer operation. The mix
hopper refrigeration is not adjustable.
6
Models 104 & 220