Vogt VT100, Руководство по обслуживанию

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8-4 Vogt
®
VT Service Manual
Service Operations
Bin Control (Ranco Electronic Temperature Control)
With the Ranco electronic temperature control the ice must come in contact with the sensor to shut the
machine off. The sensor should be installed in the bin using the standard bin thermostat mounting bracket.
Three quarters of the sensor (black part) should hang below the bottom of the bracket.
Programming the Sensor
1)
Press the “SET” button to enter the sensors setup mode
2)
Select between “C”- Celsius and “F” - Fahrenheit
Use the up
▲
or down
▼
key to select “F”
3) Press the “SET” button to set the Set point (S1 will be blinking)
Use the up
▲
or down
▼
key to set the temperature at 38
°
F
4) Press the “SET” button to set the Differential (DIF 1 will be blinking)
Use the up
▲
or down
▼
key to set the differential at 2
°
F
5)
Select between “C1”- Cooling mode and “H1” - Heating mode
Use the up
▲
or down
▼
key to select “C1”
Machine will shut off when temperature drops to 38
°
F and come on when temperature reaches 40
°
F.
Note: The sensor will automatically exit the programming mode if no keys are depressed for a period of
thirty seconds. Any settings that have been input to the control will be accepted at that point.
FIGURE 8-4
Electronic Temperature Control - Part # 12A 2117G09
Error Messages
E1 – Appears when either the up
▲
or down
▼
key is pressed when not in the programming mode.
To correct: If the E1 message appears even when no keys are being pressed, replace the control.
E2 – Appears if the control settings are not properly stored in memory.
To correct: Check all settings and correct if necessary.
EP
– Appears when the probe is open, shorted or sensing a temperature that is out of range.
To correct: Check to see if the sensed temperature is out of range. If the sensor is subject to
a known ambient temperature between -30
ο
F and 220
ο
F, and displays the EP code, replace
the damaged probe.
EE – Appears if the EEPROM data has been corrupted.
To correct: This condition cannot be field repaired. Replace the control.
Note: Electronic Temperature Control #: 12A2117G09 / Replacement Sensor #: 12A2117G0901