T ■■■■■■■■■■■■■■■■■I Rules for use not in accordance with the instructions The gênerai characteristics of ail models and their condition of use are referred to in the catalogue pages. When a correct condition of use may be guaranteed, it is necessary to follow the undermentioned instructions. The non-observance of said instructions may generate a quick decay of the original characteristics of the product or irréversible damages, which may compromise the its correct working. 1. Use of non stabilized tensions (except speed-up models) Tension valves higher than limits, indicated in the use conditions may generate damages to elastomers and coils. In such a case you must provide for the following protections: a) Tension stabilizer; b) Step-down transformer circuit (PRB); c) Control circuit with double tension level.
2. Use with ambient high-température An environmental high-température (over 50°C), combined with long actuation times and without an air passing may generate damage to both elastomers and coils. In such a case you must provide as follows: a) Assure the
solenoid valve of a suitable ventilation; b) Install a tension reducer circuit (PRB) or make use of a control circuit with double tension level (except the speed-up model). 3. Continuous actuation (ED 100% models) According to the models, said use, particularly when it is combined with such conditions as in 1 and 2, may generate damages both to elastomers and coils. In such a case you must provide as follows: a) Avoid to install the
solenoid valve near a heat source; b) Assure the
solenoid valve of a suitable ventilation; c) Install a tension reducer circuit (PRB) or use a control circuit with a double tension level (except the speed-on models).
4. Use of non in accordance fluid Matrix
solenoid valves require no lubrication. The insert in the
solenoid valve of lubricating grease and oil may produce a decay of the functional features. Lubricating oils combined with liquid paraffin, solvents or some other chemical products may alter both conformation and functionality of the elastomers, provoking flow rate réductions and cutting the actuation times. It is recommended to assure a suitable drying system and fluid filtering, and avoids the introduction in the pneumatic circuit of lubricants and agents non compatible with NBR (Nitrile-butadiene rubber) introduction in the pneumatic circuit.
5. Use of conic fittings and/or dopes It is recommended, when the
solenoid valve is not provided with it, the use of conic fittings, equipped with cylindrical thread, provided with 0-Rings or washers. The use of conic fittings and/or dopes may compromise the correct working of the
solenoid valve. When it is not possible to assure a suitable protection level, it is recommended to use models equipped with a HNBR
actuators, available in the 860, 720 and 750 Séries.
