Vogt P18FXT User Manual

10TA Service Manual
SERVICE OPERATIONS
4/28/14
9-4
RESET BUTTON
RANGE ADJUSTING SCREW
SET AT 40 PSIG (R-22)
SET AT 52 PSIG (R-404A)
(CW RAISES SETTING)
HIGH PRESSURE ADJUSTMENT
SET AT 300 PSIG (R-22)
SET AT 350 PSIG (R-404A)
(CW RAISES SETTING)
DIFFERENTIAL FACTORY SET
DIFFERENTIAL ADJUSTING SCREW
SET AT 20 PSIG
(CW RAISES SETTING)
LOW PRESSURE
TEST CONNECTION
HIGH PRESSURE
TEST CONNECTION
Capillary Bypass The capillary bypass is located directly following the “A2” solenoid. The “A2”
solenoid should be energized (Open) during the entire freeze cycle. The function of the capillary
bypass is to meter a set minimum amount of refrigerant to the freezer during the freeze cycle,
thereby reducing cycling of the float switch.
High-Low Pressure Switch The high-low pressure switch (HPS) (FIGURE 9-4) is a two pole dual
function switch. Located in the machine mounted to the frame near the compressor. It protects the
machine from possible damage due to abnormal pressure during operation.
! 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 40 psig and the cutout set at 20 psig for R-22
The LOW pressure cut-in should be set at 52 psig and the cutout set at 28 psig for R-404a.
NOTE: After tripping at the cutout setting, the switch will reset automatically when the pressure
rises to the cut-in setting.
The HIGH pressure cutout should be set at 300 psig for R-22 and 350 psig for R-404a. After
tripping, reset the switch manually.
FIGURE 9-4
High-Low Pressure Switch
If it becomes necessary to install a new high/low pressure switch, the following procedure is
recommended for its adjustment:
Turn the adjusting screws clockwise to raise the pressure setting. Turn counter-clockwise to lower
the setting. Adjust the switch to the indicated pressure settings and test with an accurate gage to be
sure the switch functions properly before installation.
CE Approved machine
Vogt Part #: 12A2117D01CE
Vogt Part #: 12A2117D02

Vogt P18FXT Specifications

General

Brand	Vogt
Model	P18FXT
Category	Ice Maker
Language	English