PRECAUTION

• Membrane filter Plates that are not properly installed or are located outside of the filter press may not be charged with pressure.
• Never expose the membrane filter Plates to direct sunlight. This applies both to outside and inside storage. Cover the filter Plates with a tarp impervious to light if necessary.
• Note: In this context that filter Plates with different temperatures lead to fluctuations in the dimensional accuracy.
• If you use both recessed and membrane filter Plates for one filter press, you must ensure that they are installed in alternating order.

1.  Never use more than one recessed filter element between two membrane filter Plates: The squeezing of the membranes generates enormous forces, which can destroy the recessed filter Plates. Effects on the filter press as well as damage to persons and property—cannot be excluded in this event.

2.  Never use the tail (end) plate exclusively to shorten the filter pack. Instead, use an accordingly dimensioned blanking plate (please contact NMP Filtration for details). The surface pressure during filtration or squeezing inevitably results in differential pressure, and thus in the destruction of the filter Plates. This may lead to property damage and injuries.

• To prevent the filter Plates from being permanently deformed, overstressing as the result of excessive closing force is not permitted.
• However, the maximum permissible closing force must not be applied for an extended period, e.g. for longer than one (1) day, without operating the filter press. -In this case, permanent deformations to the filter Plates may occur which lead to malfunctions of the filter Plates and the filter press.
• Make sure that the filter chambers are fed uniformly, i.e.: The cake build-up must be constant over the filter surface of all filter Plates differential pressure between the chambers is not permitted.
• Differential pressure can damage or destroy the membrane filter Plates. Improper operation may cause property damage and injuries.
• It is essential that the minimum final cake thickness is observed, as otherwise damage to the membranes cannot be ruled out.
• Working temperature of membrane filter plate is 65˚c. (80˚c can also be available but the feed pressure and squeeze pressure must be below 7 bar.The span life of membrane may be shortened if long-time work under high slurry temperature) above temperature will deform the shape of the filter plate or cause of damage.
• For safety reasons, water should always be the preferred squeeze medium for squeezing the membranes.
• Water is a virtually incompressible medium.
• When using compressed air, the compressed volume represents an increased safety risk due to the technical work involved. If the closing force of the filter press fails during squeezing with compressed gas, the expansion of the compressed gas causes the filter press to open suddenly. This may result in damage to the filter Plates, filter press frame and other equipment. In such cases, the risk of serious injury or even death to the operating personnel cannot be excluded.
• Always check the individual external inflation system for damage and leaks during operation. Sudden pressure losses in individual membrane filter Plates may cause their damage or even their complete destruction, and may also lead to preliminary damage of adjacent filter Plates.
• Do not use pressure sources or feeding pumps, which cause pressure pulsation. Poor dewatering results and possible membrane damage may occur.
• The squeeze medium must be drained out of the membrane filter Plates after squeezing completes.
• The drain line must always be below the water level of the reservoir tank to prevent air from entering the system and destroying the suction effect during draining.
• To prevent disturbances during filtration resulting from residual water in the filter Plates, open the drain valve during filtration.
• Avoid any impacts or other jolting influences on the membrane filter Plates. Jolting forces have an especially strong effect at temperatures below 10 °C.