Riken Keiki GD-3EC, Техническое руководство

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7. Maintenance 7-1 Maintenance intervals and items
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The main details of the maintenance services are as follows. Please contact Riken Keiki for more information.
Service Service details
Power supply check
・
Check the power supply voltage.
・
Check to confirm that the power lamp is lit.
(Confirm that the power lamp (POWER), alarm lamps (ALM1, ALM2), fault lamp
(FAULT), unit lamps (PPM, %LEL, %) are clearly visible on the display.)
・
Check the operation of the UPS (uninterruptible power system), if used.
Concentration
display check Check to confirm that the concentration reading indicates zero using a zero
calibration gas. Perform zero calibration if the reading is not zero.
With the oxygen deficiency alarm specifications, introduce clean air and check that
the concentration reading indicates [20.9] (vol%). Perform span adjustment if the
reading is offset.
Filter check Check to confirm that the dust filter is neither contaminated nor clogged.
Replace the filter if the filter is dirty or clogged.
Alarm test Use the alarm test function to inspect the alarm circuit.
・
Check alarm lamps. (Check the ALM1 and ALM2 operations.)
・
Check external alarms. (Check the buzzer, reset signal, and other external
alarm operations.)
Calibration Perform sensitivity calibration using a calibration gas.
Gas alarm check Check the gas alarm using a calibration gas.
・
Check alarms. (Confirm alarm activation when alarm setpoint is reached.)
・ Check delay time. (Check delay time until alarm activation.)
・
Check alarm lamps. (Check the ALM1 and ALM2 operations.)
・ Check external alarms. (Check the buzzer, reset signal, and other external
alarm operations.)
Product cleaning
and repair (visual
inspection) Check the product exterior, cover, and interior for dirt and damage. Clean/repair
problem areas.
Replace cracked or damaged parts.
Product operation
check Operate the keys to check individual functions and parameters.
Consumable part
replacement Replace degraded components such as sensors and filters.