Prominent Solenoid Metering Pump Gamma/ XL NPE2 1020

Read the safety information and specifications in the 'Storage, Transport and Unpacking' chapter

Disconnect the pump from the mains power supply

Ensure the pump cannot be switched on again by unauthorized persons

Ensure the system is at atmospheric pressure before commencing work

Use the correct spare parts kits

Check the metering diaphragm more frequently under heavy-duty loading

Use a diaphragm rupture indicator with feed chemicals that put particular pressure on the diaphragm

Enter the order number of the diaphragm or spare parts kit

Take protective measures, if necessary

Note the material safety data sheet for the feed chemical

Prevent the escape of feed chemical

Ensure that the system is at atmospheric pressure

Empty the liquid end by turning it upside down and allowing the feed chemical to run out

Flush out with a suitable medium

Ensure all spare parts are available

Install the new vPTFE diaphragm

Valve and Connector Installation

Read the safety information and specifications in the 'Storage, Transport and Unpacking' chapter.

Disconnect the pump from the mains power supply and ensure it cannot be switched on by unauthorized persons.

Ensure the system is at atmospheric pressure before commencing work on hydraulic parts.

Inspection of Hydraulic Components

Check that all hydraulic lines and components are secure and leak-tight

Is the flow correct after pressing [Priming]?

Electrical and Structural Integrity Check

Check that the electrical connectors are intact.

Replace the liquid end diaphragm

Unscrew the diaphragm rupture indicator using an AF 14 open-ended spanner

Clean the diaphragm rupture indicator with suitable liquid, preferably water (polysulphone material)

Fully immerse the tapered section at the front of the diaphragm rupture indicator in water

Does the continuous display indicate a diaphragm rupture?