Riken Keiki 04 Series Technical Manual

9. Troubleshooting 9-1. Product abnormalities
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Symptom Cause Corrective action
Low battery voltage alarm:
[FAIL BATTERY] appears.
Battery levels are low.
Turn off the power and replace with new batteries in a
safe place.
(Refer to ‘3-3. Inserting the batteries’.)
Air calibration is not
possible.
[FAIL AIR] appears.
Fresh air is not being
supplied to the product.
Supply fresh air around the product.
The sensor sensitivity has
degraded.
Contact Riken Keiki to request sensor replacement.
(Refer to ‘7-6-2. Sensor replacement’.)
Clock abnormality:
[FAIL CLOCK] appears.
Internal clock abnormality
Set the date and time.
(Refer to ‘6-12. Date and time setting (DATE)’.)
If this occurs frequently, the internal clock may be faulty.
Contact Riken Keiki to request internal clock
replacement.
The alarm does not stop
even after gas
concentrations fall below
the alarm setpoint.
You did not press the
POWER/MODE button.
For OX-04G, OX-04, HS-04, SC-04 (SO2)
The product alarms are self-latching. After the alarm
occurs, press the POWER/MODE button.
For CO-04, CO-04 (C-), CX-04
If the gas alarm pattern is self-latching, press the
POWER/MODE button after the alarm occurs.
NOTE
 This troubleshooting section does not address all problems that may occur with the product. Brief explanations
of causes and corrective actions have been provided to help correct common problems that may occur
frequently. If problems persist even after taking the corrective actions suggested here or if you encounter
symptoms not listed here, contact Riken Keiki.

Riken Keiki 04 Series Specifications

General

Brand	Riken Keiki
Model	04 Series
Category	Measuring Instruments
Language	English