Riken Keiki PT2-161, Руководство по эксплуатации

Страница: 40 / 68

7 Maintenance 7-1. Maintenance intervals and items
- 38 -
7
Maintenance
The detector is an important instrument for the purpose of safety.
To maintain the performance of the detector and improve the reliability of safety, perform a regular
maintenance.
7-1. Maintenance intervals and items

Daily maintenance: Perform maintenance before beginning to work.

Monthly maintenance: Perform maintenance on the alarm circuit (alarm test) once a month.

Regular maintenance: Perform maintenance once or more for every six months to maintain the
performance as a safety unit.
Maintenance
item
Maintenance content
Daily
mainte-
nance
Monthly
mainte-
nance
Regular
mainte-
nance
Power supply
check Check that the power lamp lights up.
○ ○ ○
Concentration
display check Check that the concentration display value is zero.
When the reading is incorrect, perform the zero
adjustment after ensuring that no interference gases
exist around it.
○ ○ ○
Flow rate check Check the flow rate to find abnormalities.
○ ○ ○
Filter check Check the dust filter for dust or clogging. ○ ○ ○
Alarm test Inspect the alarm circuit by using the alarm test
function.
－
○ ○
Span adjustment Perform the span adjustment by using the calibration
gas.
－ －
○
Gas alarm check Check the gas alarm by using the calibration gas.
－ －
○