TM 10-5430-243-12&P 0005 000005 00-7 Change 1Filling The Tank CAUTIONS Do not allow the filler/discharge hoses to strain tank fabric during operation. If necessary, support each hose to prevent stress on the tank fabric, which could cause damage to the hose. Personnel assigned to operate the water tank must periodically check the dates on the data plates to verify that the tank is safe for use. Each tank has a one-year service life beginning on the date when it is first filled. Shelf storage life is five years from the date of manufacture. Users must initiate action to replace over-aged tanks. Failure to heed this caution can cause tank to rupture. NOTE Either filler/discharge assembly can be used as the fill or discharge port. 1. After performing adjustments and routine checks, attach the water source to the filler/discharge gate or ball valve. Close the valve on the drain hose assembly. Verify the drain ball or gate valve is closed. 2. Check the vent fitting installation to make sure the mushroom type vent cap is not plugged. 3. Water may be introduced into the tank by several means. Two recommended methods are as follows: a. With the vent pipe assembly in place and vent cap open, water may be introduced into the tank through the filler/discharge ball or gate valve until the fluid reaches the specified height in the tank vent pipe, three inches, but not to exceed the maximum specified filled tank height. b. With the mushroom type vent cap closed, water may be metered into the collapsed tank through the filler/discharge ball or gate valve by means of a gravity head or by pumping. 4. Activate the water source. 5. Open the gate or ball valve and begin filling water tank. Maximum fill rate is 350 gallons (1,325 liters) per minute. 6. Fill the tank with 2,000 gallons. Observe the tank body, fittings, and vent during filling operations to assure they are secure and not leaking. Reseat couplings if they leak. Report all leaks immediately to local supervision. If no leaks are found, fill tank to noted capacity. Do not overfill. 7. Verify the vent fitting assembly vent cap is operating properly and not stuck in a closed position.
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