Maintenance
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8
Maintenance
Take all the necessary measures in good time to ensure the operational safety and reliability of the
entire measuring system.
Measuring point maintenance comprises:
• Calibration (see "Calibration" section)
• Cleaning the transmitter, assembly and sensor
• Inspecting cables and connections
• Maintenance of the control unit
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Warning!
• When performing work on the device, take possible effects on the process control system or the
process itself into account.
• If you have to remove the sensor for servicing or calibration work, pay attention to the hazards
caused by pressure, temperature and contamination.
• The control unit and process retractable assembly work with compressed air and pressurized
water. Disconnect the air and water supply before working on couplings, valves or pressure
switches!
• De-energize the device before you open it.
If work has to be performed while the unit is energized, it may only be carried out by an
electrician.
• Power can be supplied to switching contacts by separate circuits. Also de-energize these circuits
before you work on the terminals.
• Electronic components are sensitive to electrostatic discharge. Personal protective measures such
as permanent grounding with a wrist strap are necessary.
• For your own safety, always use genuine spare parts. The function, accuracy and reliability after
repair work are guaranteed with genuine parts.
!
Note!
Please contact your sales center if you have any questions.
8.1
Maintenance of the overall measuring point
8.1.1
Cleaning the transmitter
Clean the front of the housing with usual commercial cleaning agents.
In accordance with DIN 42 115, the front is resistant to the following:
• Isopropyl alcohol
• Diluted acids (max. 3%)
• Diluted bases (max. 5%)
• Ester
• Hydrocarbons
• Ketones
• Household cleaners
"
Caution!
When cleaning, never use:
• Concentrated mineral acids or bases
• Benzyl alcohol
• Methylene chloride
• High-pressure steam
8.1.2
Cleaning the sensors
Cleaning the sensor constitutes an integral part of the Topcal S system; thus, additional or external
sensor cleaning is normally not necessary. However, before monitoring the sensor, advance external
cleaning may be necessary.
"
Caution!
Set the service switch to "Service", to hold the assembly securely in the Service position.
Содержание Topcal S CPC310
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