Cornelius I Series Especificaciones descargar pdf (Pagina 28)

TP00952

November 26, 2001 23

COMPONENT FUNCTION (CIRCUIT BOARD, ETC.)

SENSORS

Condenser sensor (WHITE) is a thermistor rated at 2618 ohms to 3032 ohms at 32_F (0_C).

Condenser sensor signals the circuit board for fan cycling and also serves as the high temperature safety

shut down. The red “DELAY LED” will flash on and off every second, during high temperature safety

delay. The yellow “ERROR LED” will flash on and off every second, during high temperature safety error.

Product is functionally shut down. Reset procedure must be performed to restart product operation.

RESET OPERATION

When Cuber is functionally shut down and red “Error LED” is operational, the Cuber power switch must

be turned off for 5 seconds and returned to the ON position to reset the circuit board and allow the Cuber

to restart operation.

Evaporator Switches

Proximity Switches are mounted to the evaporator, and the magnet is mounted to the side rail.

Switch Notes:

1. Manually holding the curtain open during freeze mode will shut the Cuber down in 5 seconds.

2. During harvest cycle, if curtain is open for 5 seconds, the water pump and the compressor will stop.

When the water curtain is closed, the Cuber will begin the normal start up process.

3. In single evaporator machines, the proximity switch connection must be on the top (RH) connection

on the circuit board.

4. In dual evaporator machines, both RH and LH switches must open and reset to start the next freeze

mode.

VOLTAGE CHECKS

Evaporator Proximity Switch Pins and Condenser Thermistor Pins

Turn Cuber power switch OFF. Disconnect proximity switch plug(s) and condenser sensor plug from the

circuit board. Use a digital multimeter set for D.C. Voltage; turn power switch ON, connect leads of meter

across the top two terminal pins on the board, (for the switch being tested), meter should read 5VDC ±

0.2 output voltage. If not, replace the circuit board.

STACKING CABLE

When stacking the Xtreme Ice Machine the connecting cable (connecting the two (2) circuit boards) will

allow: the bottom Unit to shut off on the full bin signal (or any error code), the top Unit will then finish the

cycle it is in and shut down. The Xtreme Ice Machine should never be stacked more than two high.

SENSOR [THERMISTOR] DIAGNOSIS

Condenser sensor – Turn Cuber power switch OFF. Disconnect sensor plug from board. Install test

lead part no. 164984009 and use digital multimeter set for D.C. Voltage. Turn power switch ON. Con-

nect the leads of the meter across the two leads of the test lead being checked. The meter should read 5

VDC ± 0.25 output voltage from the board. If voltage is not correct, replace the circuit board.

Should the cuber operation indicate there may be a fault in the sensor [thermistor] or the control board

circuit proceed as follows:

1. Condenser Sensor (white leads) - self-contained air-cooled only - water cooled and remote systems

use a resistor plug on the control board.

2. Shorted sensor – a steady low millivolt reading will be recorded. The reading will not change.

3. Open sensor – the multimeter will record control board output voltage of 5.0 VDC.

4. Should sensor (thermistor) pass the voltage test proceed to the control board diagnosis for LED se-

quence.

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 53 54

Comentarios a estos manuales

Sin comentarios

Cornelius I Series Especificaciones Pagina 28

Comentarios a estos manuales

Relacionado con productos y manuales para Máquinas productoras de hielo Cornelius I Series