RKI Instruments RM-5000 Series Indicator/Alarm Unit - Manual (Page 53)

7 Maintenance 7-1. Maintenance intervals and items
- 53 - RM-5000
<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 indicator/alarm unit, please use our
maintenance service.
• The followings are typical maintenance services. Please contact RIKEN KEIKI for more information.
Main Services
Power Supply
Check
: Checks the power supply voltage.
Verifies that the power lamp lights up.
(Verifies that relevant points can be identified on the system.)
(When a UPS (uninterruptible power system) is used, checks the operation with the UPS.)
Concentration
Display Check : Verifies that the concentration display value is zero (or 20.9 vol% on the oxygen deficiency meter) by
using the zero gas.
Performs the zero adjustment (fresh air adjustment) if the reading is incorrect.
Flow Rate Check : Checks the flow rate indicator to find abnormalities.
Checks the flow rate by using an external flow meter to verify the correctness of the flow rate indicator
on the device. If the flow rate is incorrect, performs the flow rate adjustment.
Filter Check : Checks the dust filter for dust or clogging.
Replaces a dirty or clogged dust filter.
Inspects the alarm circuit by using the alarm test function.
• Checks the alarm lamps. (Checks each activation of ALM1 and ALM2.) Alarm Test :
• Checks the external alarm. (Checks the activation of the external alarm, such as a buzzer.)
Span Adjustment : Performs the span adjustment by using the calibration gas.
Checks the gas alarm by using the calibration gas.
• Checks the alarm. (Checks the alarm activation when the alarm setpoint is reached.)
• Checks the delay time. (Checks time to delay until the alarm is triggered.)
• Checks the alarm lamps. (Checks each activation of ALM1 and ALM2.) Gas Alarm Check :
• Checks the external alarm. (Checks the activation of external alarms, such as a buzzer and reset
signal.)
Cleaning and
Repair of Device
(visual diagnosis) : Checks dust or damage on surface, cover, or internal parts of the indicator/alarm unit, cleans and
repairs such parts of the device.
Replaces parts which are cracked or damaged.
Device Operation
Check : Uses the keys to check the operation of functions and parameters.
Replacement of
Consumable Parts : Replaces consumable parts, such as a sensor, filter and pump.