Vogt P-34AL-15, Руководство по обслуживанию

Страница: 90 / 159

P34AL-15 & P34ALOF-15 Service Manual
SERVICING OPERATIONS
9/22/05
9-2
Figure 9-1
P34AL-15 Float Height
Model Tube Size 1- Length of
Pipe
2- Length of
Pipe
P34AL All 24” 10”
TABLE 9-1
Length of Pipe on Float Switches
Hand Expansion Valve. The hand expansion valve is located directly after the “A1” solenoid
valve. This valve should be set at a point where the float switch is open for a length of time
approximately equal to the time it is closed.
Freeze Timer.
The freezing time period for producing ice of a desired thickness is controlled by the
freeze timer (1TR), Figure 9-2, located inside the control panel. This timer is a microprocessor
based timer housed in a standard 15 terminal CYCL-FLEX
®
plug-in case. Time set points are
entered into the unit using a sealed membrane keypad on the front of the unit. Each digit in the
setpoint is individually increased or decreased by pressing the appropriate keypad switch. There is
a mode annunciator in the display area on the front of the unit. The mode annunciator will flash
when the unit is timing. Table 9-2 shows the miniature rocker switch settings for the unit. This
enables the unit to pulse output, reverse start, minute/second display and battery back-up set points
and timing.