Riken Keiki PT2-177, Operating Manual

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7 Maintenance 7-2. Regular maintenance mode
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<Alarm Test Mode "2-0">
2-0
Press SET key.
2-0.0 Gas Test
2-0.1 Alarm Test
2-0.2 Fault Test
2-0.3 LED Test
2-0.4 Memory Test
Gas Test => P34
Alarm Test => P34
Fault Test => P35
LED Test => P35
Memory Test => P36
To 2-0.0
WARNING

Before starting the alarm test (transmission test), provide a notification to the related sections
so that they can prepare for false abnormalities (external output signals and alarm contact).
After the test is completed, never fail to press MENU/ESC key to return to the detection mode.
(If the detector remains in the alarm test mode, it automatically returns to the detection mode in
ten hours.)

In the alarm test mode, the gas concentration equal to the reading is output even in the
maintenance mode depending on the setting. Take actions, if necessary, so that the signal
receiver side can prepare to avoid false alarms.