*Incorrect installation can cause rapid failure of water tanks due to electrolysis. It is vital that this risk is reduced by the use of dielectric connections and isolation of the tank supports. Installers must be aware of the correct procedures. For assistance call 1 (213) 747-7514. To be certain all dielectrics are correctly installed, check the final installation with an ohm meter. There must be no circuit between a pipe and the empty tank.
*Always refer to packing slip for additional instructions.
*The tank should be installed in such a manner, that should the tank or any connections to it leak, the resulting flow of water will not cause damage. All tanks will eventually leak.
*A good policy is to monitor the condition of the inside of the tank periodically, so that any deterioration can be repaired.
*Manway covers and gaskets are shipped in place so they will not be lost in shipment. The bolts are not tightened completely so that the tank can be opened and cleaned prior to service. Once the manway bolts are fully torqued, the gasket often cannot be reused. Replacement gaskets are available.
*The gaskets may shift due to vibration in transit.
*For final assembly of the manway, the gaskets must cover the surface of the ring 100% and project slightly on each side of the ring. The bolts should be tightened before the tank has pressure, and then re-tightened when the tank is at operating pressure.
*Only the gasket should be used. Do not use glues or materials such as Permatex to assist the gasket seal. These can cause the gasket to creep under pressure, and make later installation of a new gasket very difficult.
(The following paragraphs apply to lined tanks only)
Epoxy Lined Tanks
*These linings are applied in multiple coats over a sandblasted surface.
They contain organic solvents that have a distinctive odor. It is also advisable
to leave the tank open for as long as possible before start-up, so that the
solvent has evaporated and any odor is gone beforehand. This is particularly
if hot water is likely to remain stagnant in the tank for long periods, especially
if the use is such that any trace of taste or odor is unacceptable. Once immersed,
any residual solvents take much longer to disperse.
*After installation, fill the system and run at operating temperature for at least one day in closed loop mode. Then drain system, open tank, and wipe clean. Very often the installer has pipe dope left in the tank. This can cause odor.
Glass Lined Tanks
*Anodes should be checked 12 months after start up. Their original diameter is 1-5/16". Should their diameter be reduced by 50% or more, they should be replaced. After the first check at 12 months, a schedule should be established for future checks.
*We supply 25 grams of anode per square foot of tank area (glass lined tanks only).
*Replacement anodes are available; please specify rigid or flexible (all 1-5/16" diameter).
Cement Lined Tanks
*Cement lined tanks must be kept closed so that the cement can remain moist and will cure without cracking. When installation of the tank commences, add more water to the interior, so the cement will continue to remain moist. The cement lining should never get completely dry. Please observe the sticker near the manway. If the lining is inspected and repaired at least every three years while in service, its life will be lengthened substantially.
*Copies of the submittal specifications are available on request: Hanson A.S.M.E. Water Storage Tanks, Epoxy Lining, Glass Lining, Cement Lining, and Insulation (foam with topcoat or glassfibre with metal jacket).