Page 227 - Electronic Mechanic - TP - Volume - 2

ELECTRONICS MECHANIC - CITS

6 Connect the Geyser to the Supply & Switch “ON” the appliance, keeping the inspection/ bottom Cover Of the
electrical connection are open
7 Observe the heating Process is Cut Off by the actuation of the thermostat.
8 Switch “OFF” the Supply & Remove the plug.

9 Measure the I.R Value between terminals and body.
10 Check the thermostat for Continuity between its terminals at different settings. Replace the detective thermostat
with good one.
11 Thermostat Cut -off Calibration, Adjust the thermostat for a higher Setting Switch Supply and observe the Cut-
Off, if the thermostat is found to be good.
Defective heating element
Check the element for its continuity and Measure insulation value between the terminal and the body and replace
the heating element with an identical good one. Switch Off the power. Supply and Observe.
Water is too hot
a Thermostat setting is too high.

b Defective element.
c Check the Setting of the thermostat & adjust it to a lower value. Switch” ON “the geyser unit for the thermostat
to cut off the Supply the inlet for about 20 minutes. Open the water at Outlet & measure hot water temperature.
Water Not hot enough

i Thermostat setting too low-
ii In correct heater element.
iii Excessive lime in element.
iv Check thermostat setting; adjust it to a higher Value

v Check the wattage of heating element.

Solution
Unfortunately, fixing the immersion heater’s central component is a challenging task, and even the bravest of DIY
experts will have a tough time with it. Overall, the process includes removing the old heating element, cleaning
the heater’s opening and fitting the new component.

However, it’s easier said than done as the task requires some prior experience in plumbing and a bit of knowledge
about electrical fixtures. So, for your safety, please contact a professional technician to change the element and
ensure that everything works fine.

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CITS : E & H - Electronics Mechanic - Exercise 176