TECHNICAL BULLETIN

PREMATURE FAILURE

BULLETIN 46

SYMPTOMS

  • Thermal Expansion
  • Undersized Unit
  • No Cathodic Protection
  • Heavy Mineral Deposits

CAUSES

Bulged tank bottoms and crooked spud/nipples

  • Heavy condensation
  • Excessive heat due to lime build up above thermostat probe  

IDENTIFYING THE PROBLEM

Symptom vs Cause(s) and 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