MAINTENANCE
Part. No. 2400M2501_6 Touchpoint Pro
129 Technical Handbook
15 Maintenance Procedures
This chapter describes how to perform common maintenance operations.
The required frequency of inspection and maintenance will depend on local site conditions and will need to be established
through experience. Please refer to the following standards or other local or national regulations for guidance on establishing
an appropriate maintenance routine:
EN 45544-4 is a guide to selection, installation, use and maintenance of electrical apparatus used for the direct detection
and direct concentration measurement of toxic gases and vapours.
EN 60079-29-2 is a guide to, and recommended practice for, the selection, installation, safe use and maintenance of
electrically operated group II apparatus intended for use in industrial and commercial safety applications for the detection
and measurement of flammable gases.
Note: When finished, ensure that all enclosures are closed and locked, and ensure that the maintenance and rectification is
recorded.
15.1 Routine Maintenance
Routinely (i.e. daily, weekly or monthly depending on local conditions) carry out the following tasks:
Clean the Touchscreen with a soft cloth and mild detergent, or use a proprietary VDU screen cleaner.
Check the screen for correct operation. Recalibrate if necessary.
Remove dust and other contamination (particularly on rack mounted units or enclosure vents).
Periodically exercise the relays to confirm functionality (see Ch.16 How to Test the TPPR System).
Check that the SD Card still has free space.
Check the condition of the enclosure for security, corrosion, deterioration of door seals, blocked ventilation, loose
fixings and other damage that could impair the safety and operation of the equipment or its safety function.
If the relays are switching mains voltages, hazardous live terminals may be present within the Relay Output Module
even if the Touchpoint Pro system is isolated.
To avoid any unwanted activation of output devices (e.g. emergency flooding) always inhibit or disable relay
activated outputs before exercising the relays and remember to enable them when testing is finished.
Do not use solvents or abrasives to clean any part of the TPPR as this may cause irreparable damage.
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