Armstrong 3033 Manuale di installazione e manutenzione - Pagina 14
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Stampa la paginaServicing & Maintenance
Warning! Isolate water supply to Model 320 before proceeding.
Model 320 Thermostatic Mixing Valves and its components should be inspected annually, or more frequently where
acknowledged site conditions such as high mineral content water dictate.
Model 320 Thermostatic Mixing Valve is of a sealed single "cartridge construction". The cartridge can be removed
from the valve for inspection or replacement. To access the valves internal components for inspection, cleaning or
replacement proceed as follows.
Maintenance must be carried out in accordance with these instructions, and must be conducted by designated,
qualified and competent personnel. This mixing valve is designed for minimal maintenance under conditions of
normal use. External surfaces may be wiped clean with a soft cloth, and if necessary, a mild detergent or soap
solution can be used.
Warning! Many household and industrial cleaning products contain mild abrasives and chemical concentrates,
and should not be used on polished, chromed or plastic surfaces.
Components are precision-made, so care must be taken while servicing to avoid damage.
Lubricant
Important! All seals are pre-lubricated. If you need to further lubricate the seals, use only a small amount of
silicone-only based lubricants on this product. Do not use oil-based or other lubricant types as these may cause
rapid deterioration of seals.
Maintenance Procedure - Cartridge Assembly
Isolate the water supplies to the mixing valve. Open an outlet fitting to release pressure and to assist the draining
of residual water.
Step 1
14
3 mm