Main Mitre-AS, Инструкция по установке и обслуживанию

Страница: 8 / 18

Page 4
CHECKING BURNER PRESSURE
Allow burners to operate for one minute before checking the pressures shown below.
GAS GROUP GAS INLET PRESSURE NOMINAL BURNER
PRESSURE
INJECTOR
SIZE
N.G. mbar in. w.g. mbar in. w.g. mm dia
20 8 5.7 2.3 1.25
After checking, turn off hot water tap. Remove pressure test gauge and replace screw and
sealing washer.
IMPORTANT
Remove the protective vinyl film from the namebadge. Draw the attention of the user to the
warning label on the outer case. Hand the users instructions to the consumer.
Explain fully how to operate the appliance.
SERVICING INSTRUCTIONS
Operate the heater and check the following points.
Check List Action
Does the pilot flame ignite?
Does the pilot light go out after a
short period?
Check the spark igniter and spark
electrode and replace the units if
necessary.
Check for electrical shorting.
Check the spark gap, the gap should
be between 3 mm-4 mm. See
Fig. 6 ..
This appliance is fitted with a "Heat
Sensor" positioned on the right hand
side of the heating unit.
Using a B.G.C. multimeter check for
continuity through the thermocouple
circuit (with the appliance cold). If a
fault is found it will be due to either a
faulty heat sensor or a faulty thermo-
couple.
To check the heat sensor remove it
from the cir- cuit and connect the two
leads together. Re-check the circuit, if
continuity is established then the heat
sensor is faulty and needs replacing. If
continuity is not established then the
thermo- couple is faulty.