Maintenance Service Pack for Newport Brass 3/4" Thermostatic Valve 1-540

Product 1-540-MSP

Includes

• Thermostatic Cartridge 1-102
• Two Stop Valve Assemblies 1-103

Thermostatic Cartridge 1-102

Thermostatic Cartridge 1-102

Thermostatic Cartridge 1-102

Thermostatic Cartridge 1-102

Stop Valve Assemblies 1-103

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Installing Cartridge

1. Carefully remove the handle, bonnet, stop ring, cover plate and sleeve.
2. Shut off the water to cartridge by tightening center screw on each check valve, 5 turns maximum clockwise.
3. Using a 1-3/16" deep socket or an adjustable wrench, unscrew the cartridge and gently remove it from the housing.

Cleaning Cartridge

1. Clean the screens by rinsing the cartridge under running water.
2. To remove limescale, soak cartridge in a 50/50 solution of white distilled vinegar and water.
3. Wipe cartridge and housing with wet cloth and apply a thin film of silicone lubricant to rubber O-rings. (Do not use Vaseline, because it will deteriorate the rubber O-rings.)
4. Carefully install cartridge into housing and tighten to 10 lb-ft.
5. Fully open check valves and inspect for leaks.

Replacing Stop Valve Assemblies

1. Turn off water supply to valve.
2. Tighten center screw on check valve inward until it clears bottom on check valve slot.
3. Unscrew check valve counterclockwise with 27 mm socket. Do not use a screwdriver or multi-grip plier.
4. Insert new valve back into housing (apply a maximum torque of 8-10 N-m or 70-88 lb-in). Unscrew center and re-close to 5 turns maximum clockwise.
5. Turn on water supply to valve.
6. Fully open the check valve screws and inspect for leaks.