Maintenance - Heatrae Sadia HOTFLO Installation And User Instructions Manual

6.0 MAINTENANCE

Little maintenance is required, however if an element failure occurs the
inner container of the unit must be replaced. To do this:
6.1 Switch off and disconnect the electrical supply. Turn off the water
supply to the unit.
6.2 Open a hot tap to relieve any system pressure. Disconnect the
plumbing connections to the unit and remove from the wall hanging
screws (note full weights of units). Empty unit through the outlet
connection.
6.3 Remove the terminal cover by using a large flat bladed screwdriver
to depress the 3 snap lugs located in the top 3 rectangular depres-
sions.
6.4 Remove the plastic disc from the thermostat spindle. Remove the
insulating pad from the terminal housing. Disconnect the electrical
terminations to the thermostat. Disconnect earth links to the
earthing stud.
6.5 Remove the thermostat by pulling it vertically upwards.
6.6 Remove the top cover by gently prising the four lugs (indicated by
the raised features on the edge of the cover, one on each side and
two at the back, see Diagram 6 below) away from the body using a
large flat bladed screwdriver. Remove earth link from the earthing
tab and gently bend the earthing tab to a vertical position.
Diagram 6
7