vacuubrand PC 511 NT Instructions For Use Manual

Also see for PC 510 NT: Instructions for use Instructions for use

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vacuubrand PC 511 NT Instructions For Use Manual Manual pdf 53 page image

page 53 of 63Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefullythe validity of this document with respect to his product. Manual-no.: 999188 / 19/05/2009☞ Check diaphragm for damage and replace if necessary.➨ Lift diaphragm carefully sidewise.☞ Never use a spiky or sharp-edged tool to lift the dia-phragm.➨ Use the diaphragm key to grip the diaphragm support discbelow the diaphragm.➨ Unscrew diaphragm support disc with diaphragm and dia-phragm clamping disc.➨ Check for washers between the diaphragm support discand the connecting rod. Do not mix the washers fromthe different pump heads. Make sure that the originalnumber is reassembled at the individual pump head.☞ If the old diaphragm is difficult to separate from the supportdisc, immerse assembly in naphtha or petroleum ether. Donot inhale!☞ Too small number of washers: The pump will not attainultimate vacuum. Too many washers: Clamping disc willhit head cover; noise or even blockade of the pump.➨ Position new diaphragm between diaphragm clampingdisc with square head screw and diaphragm support disc.☞ Attention: Position diaphragm with pale side towards dia-phragm clamping disc (to pump chamber).☞ Make sure that the square head screw of the diaphragmclamping disc is correctly seated in the guide hole of thediaphragm support disc.➨ Lift diaphragm at the side and position carefully togetherwith diaphragm clamping disc and diaphragm support discin the diaphragm key.☞ Avoid damage of the diaphragm: Do not bend diaphragmtoo much.☞ Assemble the original number of washers between sup-port disc and connecting rod.➨ Screw diaphragm clamping disc, diaphragm, diaphragmsupport disc and washers (if applicable) to connectingrod.➨ Optimum torque for the diaphragm support disc: 6 Nm, itis recommended to use a torque key. Attach hex key todiaphragm key (hexagonal bolt 6 mm wide).Attention: Never use the diaphragm key with any addi-tional tools like tongs or hex keys without torque limita-tion.➨ Open the hinged cover of the connection fastener with aflat-bladed screw driver.Replacing the valves - PC 510/511/520 NT