John Lewis JLBIGH702 - Manual (Page 8)

8
1. IGNITOR SWITCHES 1. IGNITOR SWITCHES 1. IGNITOR SWITCHES 1. IGNITOR SWITCHES 1. IGNITOR SWITCHES
2. IGNITOR UNIT 2. IGNITOR UNIT 2. IGNITOR UNIT 2. IGNITOR UNIT 2. IGNITOR UNIT
Wiring Diagram Wiring Diagram Wiring Diagram Wiring Diagram Wiring Diagram
2
1
N
L
N
1
2
3
4
5
6 L
N
Fault Finding Fault Finding Fault Finding Fault Finding Fault Finding
Pr Pr Pr Pr Preliminar eliminar eliminar eliminar eliminar y Electrical Systems y Electrical Systems y Electrical Systems y Electrical Systems y Electrical Systems
Check Check Check Check Check
A. A. A. A. A. EAR EAR EAR EAR EARTH CONTINUITY CHECK TH CONTINUITY CHECK TH CONTINUITY CHECK TH CONTINUITY CHECK TH CONTINUITY CHECK - Appliance
must be electrically disconnected - meter set on W
(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 W
(Ohm), check all earth wires for continuity and all
contacts are clean and tight.
B. B. B. B. B. INSULA INSULA INSULA INSULA INSULATION CHECK TION CHECK TION CHECK TION CHECK TION CHECK - Appliance electrically
disconnected, all switches ON.
a) meter set on W (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 W (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 START START START START
Isolate appliance
and carry out:
A:
A: A: A: A: Earth Continuity
check.
Has inlet fuse blown?
Carry out:
B:
B: B: B: B: Insulation check.
Electricity supply
should now be
satisfactory.
Inlet wiring
faulty.
Rectify any
fault.
Isolate appliance and
carry out:
B:
B: B: B: B: Insulation check.
Rectify any fault
including replacing
fuses as necessary.
Brown Blue
Green
Yellow
Green
Yellow Brown
Blue
NO NO NO NO NO Y E S Y E S Y E S Y E S Y E S
NO NO NO NO NO Y E S Y E S Y E S Y E S Y E S