Maintenance; Routine Check - New Cosmos Electric PE-2CC Instruction Manual

8. Maintenance

Routine checks are carried out by the user, while annual inspections are performed by New
Cosmos or its authorized representative.

8-1. Routine Check

(1) Visual check (min. one per month)
 Check the gas detector for corrosion.
 Check the mounting brackets, screws, fittings, piping, etc. for corrosion.
Visually check and replace any worn or damaged parts.
(2) Flow rate check (min. one per month)
Measure the flow rate with the filter unit (FC-32).
A flow rate greater than 0.7 l/min, indicates a normal flow rate.
If the flow rate is lower, the probable cause is clogging at the following locations. Visually
check the locations below for clogging and clean or replace the parts as needed.
 Sampling port (collecting cone)
 Sampling pipe
 Manifold plate
 Filter
If the flow rate does not change after filter replacement, check the sampling port, pipe,
and manifold plate for problems. Replace the suction pump with a new one if needed.
(3) Alarm test by using an actual gas (min. every 2 or 3 months)
Remove the cap from the filter unit (FC-32). Connect
a gas bag (which contains calibration gas) to the inlet
port of the filter unit. Apply the calibration gas into the
inlet port and check the operation of the alarm. Refer
to Figure 11.
For the method on how to prepare the calibration gas,
refer to 8-3. "Calibration Gas Preparation".
(4) Check gas detector surroundings
Ensure that there is no obstacle around the sampling
port which may prevent gas detection.
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Figure 11. Alarm Test