Chapter 8. Routine Maintenance And Scheduled Testing; Routine Maintenance; Periodic Checks - Honeywell Touchpoint Plus Technical Handbook

Chapter 8.
This chapter describes how to perform common maintenance operations and system testing. The required frequency
of inspection and maintenance will depend on local site conditions. Refer to IEC/EN 60079-29-2, EN45544-4 or
other local or national regulations for guidance on establishing an appropriate maintenance routine.
Note: Input sensor's sensitivity reduces over time. Regular recalibration is required to make allowance for these
changes. This slow change is monitored by Touchpoint Plus and is used to give the input sensor life expired warning
or calibration fail when the sensitivity is < 50 % of the first calibration.
Read Chapter 2 Safety and other related warnings and cautions before carrying out any work on the system.
If the relays are switching mains voltages, hazardous live terminals may be present within the

8.1 Routine Maintenance

Test outputs will be generated and relays will be activated during Cause and Effect (C&E) Testing.
Ensure that relay activated output systems (i.e. emergency deluge / sirens etc.) are isolated before starting
Each sensor connected to Touchpoint Plus shall be regularly gas calibrated at the interval specified in sensor's
In order to maintain safety functions of Touchpoint Plus, mA output and relay output shall be routinely

8.1.1 Periodic Checks

•
Visually inspect all cables and conduits for loose connections, security of attachment, and signs of damage.
•
Wipe the Touchpoint Plus Controller with a soft damp cloth or use PC Screen cleaner.
• Check for dust contamination.
• Periodically exercise the outputs (see Ch.8.2 Routine Testing) to confirm their functionality (see Caution above).
•
Audio/Visual Alarms shall be checked weekly basis (refer to Ch.8.2.1)
MAN0984_Iss 4_01/19
Pt. No. 3011M5001
Routine Maintenance and Scheduled Testing
Relay Output Module even if the Touchpoint Plus system is isolated.
Ensure that the system is isolated before touching potentially live terminals.
the Relay and mA Output tests.
tested at max. yearly interval.
Do not use solvent or abrasives to clean any part of the Touchpoint Plus System.
Use only soft, lightly dampened cloths or proprietary screen cleaners.
WARNING
WARNING
CAUTION
user manual.
CAUTION
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Touchpoint Plus
Technical Handbook