Sime Format 30 HE, Инструкции по установке и обслуживанию

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14
If an electrical fault occurs on the appliance
the preliminary electrical system checks
contained in the British Gas Multimeter
Instruction Booklet must be carried out
first. When any service or replacement of
electrical components which has required
the breaking and re-making of electrical
connections has taken place, the following
tests must be repeated:
– earth continuity;
– short circuit;
– polarity;
– resistance to earth.
5.1 EARTH CONTINUITY CHECK
Appliances must be electrically disconnect-
ed, meter set on
Ω
(ohm) x 1 scale and
adjust zero if necessary. Tests leads from
any appliance earth point (e.g. inside control
box) see wiring diagrams (section 7) to
earth pin on plug. Resistance should be less
than 1
Ω
(ohm). If the resistance is greater
than 1
Ω
(ohm) check all earth wires for
continuity and all contacts are clean and
tight. If the resistance to earth is still
greater than 1
Ω
(ohm) then this should be
investigated futher.
5.2 SHORT CIRCUIT
CHECK
Switches turned FULL ON - meter set on
Ω
(ohms) x 1 scale. Test leads from L to N on
appliance terminal block, if meter reads 0
then there is a short circuit.
Meter set on
Ω
(ohm) x 100 scale. Repeat
it 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.
5.3 POLARITY CHECK
Appliance reconnected to mains supply and
meter set on 300 V ac scale. Test at appli-
ance terminal block.
– Test leads from L to N meter reads
approx.: 240 V ac.
– Test leads from L to E “ ” meter reads
approx. 240 V ac.
– Test leads from N to E “ ” meter reads
from 0 to 15 V ac.
5.4 RESISTANCE TO
EARTH CHECK
Appliance must be disconnected from main
supply and meter on
Ω
(ohm) x 100 scale.
All switches including thermostat on test
leads from L to E - if meter reads other than
infinity (
∞
) there is a fault which should be
isolated.
A detailed continuity check is required to
trace the faulty component.
IMPORTANT:
These series of checks are the first elec-
trical checks to be carried out during a
fault finding procedure. On completion
of the service/fault finding task which
has required the breaking and remaking
of electrical connections then the
checks 5.1 Earth continuity, 5.3 Polarity
and 5.4 Resistance to earth must be
repeated.
5 FAULT FINDING
ter shows “zero”. Place a container for col-
lection underneath the filter, unscrew the
cap and proceed to clean the filter, remo-
ving impurities and limestone deposits.
Check the seal o-ring before reassembling
the cap with the filter.
4.11 CHIMNEY SWEEP FUNCTION
(fig. 23)
To carry out the verification of combustion
in the boiler turn the selector and stop on
the position ( ) until the green/orange led
starts to flash intermittently.
From that moment the boiler will start func-
tioning in heating mode at the maximum
power, with switching off at 80°C and
restarting at 70°C.
Before activating the chimney sweep func-
tion make sure that the radiator valves or
eventual zone valves are open.
The test may be carried out also during hot-
water service functioning.
To do so it is enough, after having activated
the chimney sweep function, to take some
hot water from one or more cocks.
Even in this condition the boiler functions at
the maximum temperature always with the
primary controlled between 80°C and 70°C.
During the entire duration of the testing the
hot water taps must remain open.
After verifying the combustion the boiler
should be switched off by placing the selec-
tor on the
OFF position; then return the
selector to the desired function.
ATTENTION: After about 15 minutes, or
once the hot water request has been ful-
filled, the chimney sweep function auto-
matically deactivates.
Led bicolore verde/arancio
lampeggiante
Fig. 23
Bi-colour green/orange
flashing led
Fig. 22