05TA Service Manual
SERVICE OPERATIONS
4/2/14
9-5
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.
FIGURE 9-5A
Water Regulating Valve
FIGURE 9-5B
Condenser Fan Switch
Vogt Part #: 12A2117F05
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)
Connected to
Compressor Discharge
Vogt Part #: 12A4200E1001
Adjusting Stem
Set at 200 PSI (R-22)
Set at 235 PSI (R-404A)
(CW Lowers Setting)
1 1/4” FPT Connection
(water connections)
Connected to High Side of
Water Cooled Condenser
CE Approved machine
Vogt Part #: 12A2117F05CE
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