GF U1000 V2 Wallmount WM Instrucciones De Uso página 36

Maintenance & limitations
7 Maintenance & limitations
CAUTION
Risk of injury and loss of product quality through the use of spare parts not provided by GF Piping Systems!
Risk of injury and damage to property.
► If repairs are necessary, please contact your national agent for GF Piping Systems.
7.1 Maintenance plan
► Set the maintenance intervals according to the operating conditions (e.g. ambient temperature).
► Carry out the following maintenance tasks as part of the regular system inspection.
Maintenance interval
6 – 12 months
For questions regarding maintenance of the product, please contact your national GF Piping Systems representative.
NOTICE
Servicing or repairs to the unit can only be carried out by GF.
7.2 Limitations with Water-Glycol Mixtures
There is little available data on the specific heat capacity (K factor) for water glycol mixes and there is no practical method of
determining the percentage of glycol in a system or the type of glycol in use. The flow calculations are based on a Water/Ethylene
glycol mix of 30%.
In practical terms the results should not be considered more than an approximation as:
The fluid speed of sound can vary between 1480ms and 1578ms
No temperature compensation curve is available for water/glycol mixes,
The percentage of Glycol can vary the specific heat capacity from 1.00 to 1.6 J/M3 * K
The type of glycol added can change the specific heat capacity and fluid speed of sound considerably.
The Factory enabled user set-up of the application relies on the installer to set the correct operating parameters, a considerable
variation in results can be obtained from incorrectly set-up units.
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Maintenance task
► Check signal strength
► Check flow and temperature values
► Check communication outputs
User Manual