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A. EARTH CONTINUITY CHECK
Appliance must be electrically disconnected - meter set on
1 scale and adjust zero if necessary.
— Test leads from any appliance earth point to earth pin on plug.
Resistance should be less than 0.1
for continuity and all contacts clean and tight.
B. INSULATION CHECK
Appliance electrically disconnected, all switches ON.
a) meter set on
Test leads from L to N in appliance terminal block. If meter reads
«0» then there is a short circuit.
b) meter set on
Repeat test with leads from L to E. If meter reads less than ∞
(infinity) there is a fault.
NOTE - Should it be found that the fuse has failed but no fault is indicated -
a detailed continuity check (i.e. by disconnecting and checking each
component) is required to trace the faulty component.
It is possible that a fault could occur as a result of local burning/arcing but
no fault could be found under test. However a detailed visual inspection
should reveal evidence of burning around the fault.
(Ohms) x 1 scale.
(Ohm) x 100 scale.
(Ohm), check all earth wires
(Ohms) x
23
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