RKI Instruments SC-01 - Manual (Page 37)

SC-01 Operator’s Manual Maintenance • 32
Table 7: Troubleshooting the 01 Series
Symptoms Probable Causes Recommended Action
• The LCD is blank. • The unit may have been
turned off.
• The alkaline batteries
may need to be
replaced.
1. To turn on the unit, press and
briefly hold the POWER
button until you hear a beep.
2. If the unit does not turn on,
replace the alkaline batteries.
3. If the difficulties continue,
contact RKI Instruments, Inc.
for further instruction.
• The LCD shows
abnormally high
readings but other
gas detection
instruments do
not.
• The unit may need to be
calibrated.
• The sensor may need
replacement.
1. Calibrate the unit.
2. Replace the sensor and
calibrate the unit.
3. If the difficulties continue,
contact RKI Instruments for
further instruction.
• “SPAN CAL FAIL”
displays during
span adjustment.
• The calibration value
may not match the
cylinder gas
concentration.
• The calibration tubing is
not connected to the
correct calibration cup
port.
• The sample gas is not
reaching the sensor
because of a bad tubing
connection.
• The calibration cylinder
may be out of gas or is
outdated.
• The sensor may need
replacement.
1. Check the calibration tubing
for leaks or for any bad
connections.
2. Confirm that the calibration
tubing is connected to the
correct calibration cup port.
3. Make sure the SC-01
calibration gas value has
been properly set up to match
the calibration cylinder
concentration.
4. Verify that the calibration
cylinder contains an
adequate supply of fresh test
sample.
5. If the fail condition continues,
replace the sensor.
6. If the difficulties continue,
contact RKI Instruments, Inc.
for further instruction.
• “CIRCUIT FAIL”
displays on the
LCD.
• A circuit failure has
occurred.
1. Turn off the unit and turn it on
again.
2. If difficulties continue, contact
RKI Instruments, Inc.