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03TA Service Manual
Air-Cooled Units. The condenser fan switch mounted to the frame (lower right side) (FIGURE 9-
5B) (CPS) is used to regulate the head pressure. This is an adjustable pressure switch located on the
right-hand front of machine. It controls the operation of the condenser fan motor(s) through a
contactor (FC) (FIGURE 6-2) located in the control panel. The switch is set to cycle the fan
motor(s) "On" at 210 psig and "Off" at 190 psig for R-22 and "On" at 250 psig and "Off" at 230
psig for R-404a. Higher settings may be necessary for 0°F and below ambient conditions to assure
there is enough warm gas for ice harvesting.
Adjusting Stem
Set at 200 PSI (R-22)
Set at 235 PSI (R-404A)
(CW Lowers Setting)
Vogt Part #: 12A4200E1001
1 1/4" FPT Connection
(water connections)
Connected to High Side of
Water Cooled Condenser
FIGURE 9-5A.
Water Regulating Valve
Oil Separator. A coalescent oil separator is used to separate the oil from the discharge gas and return
it to the compressor
Line to condenser
Replacement filter
Vogt Part #: 12A3025F03
Gasket – supplied with filter
Temprite Oil Separator
Vogt Part #: 12A3025S14
(Add 16 ounces of oil when installing
new or after changing filter)
Oil return line
to compressor
4/11/14
Cut In Adjusting Screw
Set at 210 PSIG (R-22)
Set at 250 PSIG (R-404A)
(CW Lowers Setting)
Cut Out Adjusting Screw
Set at 190 PSIG (R-22)
Set at 230 PSIG (R-404A)
(CW Raises Setting)
Vogt Part #: 12A2117F05
Connected to
Compressor Discharge
FIGURE 9-5B.
Condenser Fan Switch
Discharge line from
compressor
FIGURE 9-6
Oil Separator
Line to condenser
Oil return line to
compressor
Discharge line from
compressor
AC&R Oil Separator
Vogt Part #: 12A3025S12
(Add 12 ounces of oil when
installing new separator)
9-5
SERVICE OPERATIONS
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