Bulletin 4 - Premature Failure

SYMPTOMS Bulged tank bottoms and crooked spud/nipples Heavy condensation Excessive heat due to lime build up above thermostat probe

CAUSES Thermal Expansion Undersized Unit No Cathodic Protection Heavy Mineral Deposits

IDENTIFYING THE PROBLEM

Symptoms	Causes	Means of Treatment
Thermal Expansion	Bulging heater Dripping temperature & pressure relief valve	see Bulletin 41 & 45
Undersized	Heavy condensation Rust flakes on burner(s)	see Bulletin 42
Cathodic Protection	Only core wire present on anode rod Anode rod not installed in heater Softening to zero parts per million Stray voltage grounded to heater	see Bulletin 43 & 44
Deliming	Heavy mineral deposits in bottom of tank	see Bulletin 13