Step 7 · Turn On Water and Test for Leaks
Return to the main water shut-off valve. Turn the handle slowly counter-clockwise to open it fully. Opening it slowly helps prevent a 'water hammer' effect in your pipes. Listen for any unusual sounds. Go back to the shower and carefully inspect the area around the handle and escutcheon plate for any signs of water. If it is dry, turn the faucet on. Test the hot and cold water functions to ensure the cartridge was installed correctly. Turn the water off and perform a final check for any drips or leaks.
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