Alfa Laval Flo-Diversion Valve U7711

Check for leakage in product wetted seals

If leakage is found, replace the seals immediately

Upload a photo of the replaced seals

Lubricate product wetted seals with USDA H1 approved oil/grease

Sign off on the valve maintenance

Replace actuator bushings complete depending on working conditions

Replace actuator bushings complete when possible, after leakage (leakage normally starts slowly)

Lubricate before fitting with Molykote Long term 2 Plus

Unscrew and remove top and bottom bushings with O-rings

Lubricate O-rings with Molykote Longterm 2 plus before fitting

Tighten brushing with a torque = 7 lbf-ft (10Nm)

Use the statistics for planning of inspections

Sign off on the actuator maintenance

Warning: This procedure requires trained personnel with PPE!

Are the valves properly assembled?

Is the temperature sensing element of the Safety Thermal Limit Recorder Controller below legal pasteurization temperature?

Is the flow promoting device (timing pump) operating properly?

Is the seal wire on ThinkTop cover hold down screws broken?

Is the gauge spacer installed at top of magnet?

Can you push down on outer ring of indication stem magnet and remove spacer between the stem and magnet?

Is the required air applied to the actuator for normal operating conditions?

Is the selector switch in the “Product” position and the flow promoting device (timing pump) not starting?

TR2 and Elastomer seat ring replacement

Remove old seal ring without damaging metal parts

Pre-mount plug seal without pressing it into the groove

Squeeze plug seal into the groove using opposite pressure points

Release compressed air behind plug seal

Cut through the upper ring portion of the TR2 plug avoiding contact with stainless steel stem

Force apart both cut ends of the plug for removal from stem

Install TR2 plugs by applying uniform pressure on all sides