Mytee’s electric heaters can provide you with years of safe and reliable service. They are designed to need minimal maintenance. However, a periodic check of your heater components can help you avoid problems, and ensure long life and optimal performance.
Heater Wrap
The wrap that surrounds your heater prevents the hot casting from
coming into contact with sensitive surrounding components,
including the base of the machine. Checking this periodically
for breaks will ensure that the heater remains properly insulated.
If any damage to the wrap can be seen, the heater should be
re-insulated as soon as possible.
Heater Casting 
The castings of Mytee’s heaters are made of a solid piece of cast
aluminum, making them extremely resistant to leaks or damage.
However, if a coil freezes, a crack on the coil can occur causing
a leak between the coil and casting. If this happens, the heater
casting should be replaced.
Heater Rods 
The heater rods are what actually get hot. These elements can,
over time, burn out or get damaged. The best way to check if a
heater rod is working properly is to check amp draw. If the heater
is drawing too few amps, or if there is no continuity, the rod
needs to be replaced.
IMPORTANT: Do not electrically power heater
elements outside of the casting. This is very
dangerous and can cause death.
Heater Coil
The heater coil is what allows water to travel through the heater
block. The main enemy of a heater coil is residue. Hard water or
chemical residue in the coil will cause a heater to lose efficiency,
taking longer to heat up the water. Over time, it may also lead to
a restriction of flow. To help minimize this, all powder chemicals
should be thoroughly dissolved and premixed before being put
through the machine. Additionally, heaters should be regularly
flushed with a de-scaler (such as Mytee’s System Maintainer) to
clean them out. However, clogged coils are difficult to clear, and
can result in replacing the heater core.