RKI Instruments SC-01 - Manual (Page 21)

SC-01 Operator’s Manual Operation in Measuring Mode • 16
Resetting Gas Alarms
To reset a gas alarm, press and release the POWER button after the gas
reading falls below the Warning level. If a TWA or STEL alarm has been
activated, it cannot be reset unless you turn off the unit.
NOTE: Even though the gas concentration may have returned to normal
or may have fallen below the low alarm point, the alarm
indications will continue until you have reset the alarm using the
POWER button.
Responding to Alarms
This section describes response to gas, over range, battery, sensor failure,
and system failure alarms.
Responding to Gas Alarms
1. Follow your established procedure for an increasing gas condition.
2. Reset the alarm by pressing and releasing the POWER button after the
alarm condition has been cleared.
Responding to an Over Range Alarm
WARNING: An over range condition may indicate an extreme toxic
gas concentration. Confirm the gas concentration with a
different SC-01 or with another gas detecting device.
1. Follow your established procedure for an increasing gas condition.
2. Reset the alarm by pressing and releasing the POWER button after the
alarm condition has cleared.
3. Calibrate the SC-01 as described in “Maintenance” on page 31.
Sensor Failure Gas name and
reading replaced by
SENSOR FAIL.
Quick pulsing tone
and LED flashing for a
few seconds
alternates with the unit
vibrating for one
second.
System Failure Gas name and
reading replaced by
CIRCUIT FAIL.
Clock Failure Gas name and
reading replaced by
CLOCK FAIL
Table 3: Alarm Types and Indications
Alarm Type LCD Indications Other Indications