7 Maintenance
7-1. Maintenance intervals and items
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About maintenance services
We provide services on regular maintenance including span adjustment, other adjustments and
maintenance.
To make the calibration gas, dedicated tools, such as a gas cylinder of the specified concentration and gas
sampling bag must be used.
Our qualified service engineers have expertise and knowledge on the dedicated tools used for services,
along with other products.
To maintain the safety operation of the monitor, please use our maintenance service.
Typical maintenance services are listed as follows. Please contact RIKEN KEIKI for more information.
<Typical Maintenance Services>
Item
Services
Power supply
check
Checks the power supply voltage.
Checks that the LCD display lights up.
(Verifies that relevant points can be identified on the system.)
Concentration
display check
Verifies that the concentration display value is "20.9%" at the atmosphere level.
Performs the air calibration if the reading is incorrect.
Alarm test
Inspects the alarm circuit by using the alarm test function.
Checks the alarm display (Checks the activation each for ALM1 and ALM2.)
Checks the alarm activation such as a buzzer.
Span adjustment
Performs span adjustment using a calibration gas.
Gas alarm check
Checks the gas alarm by using the calibration gas.
Checks the alarm. (Checks triggering of alarm when the alarm setpoint is reached.)
Checks the delay time. (Checks time to delay until the alarm is triggered.)
Checks the alarm display (Checks the activation each for ALM1 and ALM2.)
Checks the alarm activation such as a buzzer.
Cleaning and
repair of the unit
Checks dust or damage on the surface, cover or internal parts of the unit, and
cleans or repairs such parts as needed.
(Visual diagnosis) Replaces parts which are cracked or damaged.
Unit operation
check
Operates the buttons to check the operation of functions and parameters, etc.
Replacement of
consumable
parts
Replaces consumable parts, such as a sensor.
