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Section 4 APPENDICES

System Manual

Section 4

Maintenance

For details on inspection and maintenance, refer to the Instruction Sheet for the respective product.

■ Air Clean Unit

ZN-A series filters are in a double-filter structure comprising a HEPA filter and a pre-

filter, and filter air that is sucked in.

• Periodic inspection

When the filter becomes dirty, highly clean air can no longer be supplied stably for a

long time. So, dust must be periodically removed from the pre-filter.

• Replacement

When the filter becomes clogged, the two indicators (green/red) on the corner of the

body light simultaneously to notify that the filter must be replaced with a new one.

For details on how to replace the filter, refer to the Instruction Sheet for the Air Clean

Unit.

■ Air Particle Sensor

The ZN-PDA series uses a high-performance fan on the suction module to enable

continuous operation.

• Periodic inspection

Dirt and dust carried in by the fan on this system causes the filter to become dirty over

extended use. When the filter becomes dirty, the amount of particles can no longer be

monitored accurately. So, dust must be periodically removed from the pre-filter.

If dirt on the pre-filter is stubborn and cannot be removed, replace the pre-filter with

Filter Set ZN9-PF1 (sold separately).

• Cleaning

When the system has carried in air containing lots of particulates, install Cleaning Filter

ZN9-PC1 (sold separately) to maintain the inside of the Sensor in a clean state.

Indicator

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Omron ZN-A Series User Manual

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