Zanussi ZGF982C - Manual (Page 13)

13
Fault Finding
Preliminary Electrical Systems
Check
A. EARTH CONTINUITY CHECK - Appliance must
be electrically disconnected - meter set on (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 (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 (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 (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.
START
Isolate appliance
and carry out:
A: Earth Continuity
check.
Has inlet fuse blown?
Carry out:
C: Polarity check.
Electricity supply
should now be
satisfactory.
Carry out:
D: Resistance to
Earth check.
Inlet wiring
faulty.
Rectify any
fault.
Isolate appliance and
carry out:
B: Insulation check.
Rectify any fault
including replacing
fuses as necessary.
SOCKET
(face view)
PLUG (with cover
removed)
Earth Wire
Green/Yellow
Neutral Wire
Blue
Brown Blue
Green
Yellow
Green
Yellow
Brown
Blue
( )
FUSE
( )
E
N L
NO YES
NO YES
A. IGNITOR SWITCH
B. IGNITOR UNIT
B
L
N
0
1
2
3
4
5
6
220/240
A
Wiring Diagram