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Wiring Diagram
Fault Finding
Preliminary Electrical Systems Check
Brown
Blue
Blue
Green
Brown
Yellow
START
Isolate appliance
and carry out:
A: Earth Continuity
check.
YES
NO
Carry out:
C: Polarity check.
Has inlet fuse blown?
NO
YES
Inlet wiring
faulty.
Rectify any
fault.
Isolate appliance and
carry out:
B: Insulation check.
Rectify any fault
including replacing
fuses as necessary.
A. TAPS IGNITOR SWITCHES
B. IGNITOR UNIT
PLUG (with cover removed)
Earth Wire
( )
Green/Yellow
Neutral Wire
Blue
Carry out:
D: Resistance to
Earth check.
A. EARTH CONTINUITY CHECK - Appliance must
be electrically disconnected - meter set on Ω (Ohms)
x 1 scale and adjust zero if necessary.
a) Test leads from any appliance earth point to earth
pin on plug. Resistance should be less than 0.1 Ω
(Ohm), check all earth wires for continuity and all
contacts are clean and tight.
B. INSULATION CHECK - Appliance electrically
disconnected, all switches ON.
a) meter set on Ω (Ohms) x 1 scale.
Test leads from L to N in appliance terminal block.
If meter reads «0» then there is a short circuit.
b) meter set on Ω (Ohm) x 100 scale.
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.
SOCKET
(face view)
( )
E
N
L
Electricity supply
should now be
satisfactory.
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