VOGT ICE TUBE-ICE P-24A, Service Manual

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P24A & P34A Service Manual
SERVICING OPERATIONS
12/18/12
9-3
! CAUTION !
When this switch causes the machine to stop, the cause should be
identified and corrected before resuming normal operation.
! CAUTION !
The LOW pressure cut-in should be set at 35 psig and the cut-out set at 15 psig. After tripping at the
cut-out setting, the switch will reset automatically when the pressure rises to the cut-in setting.
The HIGH pressure cut-out should be set at 250 psig. After tripping, reset the switch manually.
Note: Do not rely on the switch calibration for accuracy. For accurate adjustment, check settings
with a test gage.
FIGURE 9-2
High-Low Pressure Switch (1PS)
Fan Control (cooling tower).
The fan control switch is used to cycle the cooling tower fan on and
off, thereby maintaining the proper operating head pressure. This switch is mounted on the frame of
your machine and should be adjusted to maintain a head pressure between 175-190 psig (max. 200
psig). The fan control supplies power to the starter coil for the tower fan motor(s) (6M not furnished
by Vogt). See FIGURE 9-3 for adjustment instructions.
FIGURE 9-3
Fan Control Switch