KeyPad
Version 1.0
SCP SCIENCE
81
MODEL
VOLTAGE SELECTOR
SWITCH POSITION
RESISTANCE
DigiPREP Jr
115V
230V
18 ± 2
71 ± 2
DigiPREP MS
115V
230V
15 ± 2
57 ± 2
DigiPREP HP
115V
230V
15 ± 2
57 ± 2
DigiPREP LS 230V 20 ± 2
DigiPREP HT 230V 16 ± 2
DigiPREP DONGLE TESTING PROCEDURES
Ensure the dongle is functioning correctly, by
measuring continuity across pins 3 and 4, and pins 1
and 2 of the dongle. If no continuity is detected, the
dongle is defective and must be replaced.
DigiPROBE TESTING PROCEDURES
Measure between pins 1 and 3 of the probe: it
should measure a value of 108 ohms. All other
connections should not return values.
DigiPREP TROUBLESHOOTING
DigiPROBE ERROR DISPLAYING ON CONTROLLER
1. Perform the dongle test on page 88.
2. Perform the internal RTD test on page 86.
3. Perform the umbilical cord test on page 85.
4. Verify resistance of the DigiPROBE.
5. If problem persists, service on the controller is
needed.
SYSTEM FUNCTIONAL WITH DONGLE BUT NOT
WITH DigiPROBE
1. Perform the umbilical cord test on page 85 and
ensure pins 2 and 4 are not connected to
the umbilical cord. This problem is typically
caused by having the dongle port wired up
in reverse.
2. Perform the DigiPROBE test on page 89.
HEATER DOES NOT HEAT UP, TEMPERATURE
DISPLAYS BUT DOES NOT CHANGE
1. Ensure the umbilical cord is fully inserted into
the controller.
2. Ensure 'COM 2' dongle is installed correctly
3. Ensure the voltage selector switch is properly
positioned.
4. Perform the heater tests on page 86 and if
problems are found perform the replacement
procedures on page 87.
5. If no problems are found, test the solid-state
relay in the controller.
HEATER CANNOT ACHIEVE DESIRED TEMPERATURE,
BUT CONTINUOUSLY TRIES TO RAMP
1. Ensure the umbilical cord is fully inserted into
the controller.
2. Ensure the voltage selector switch is properly
positioned.
3. Perform the heater tests on page 86. If
problems are found, perform the replacement
procedures on page 87.
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