Hamworthy UF100-1, Инструкция по установке, вводу в эксплуатацию и эксплуатации

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HAMWORTHY HEATING LTD
32
UPTON FLOOR STANDING SERIES 500001340/C
11.0 REPLACEMENT OF FAILED COMPONENTS
There are a number of components listed below which
can be replaced simply and quickly by following the
given procedure. In each case the operation of each
replaced component must be checked by carrying out
the appropriate part of the commissioning procedure.
See
Section 8: COMMISSIONING & TESTING.
Note: - Isolate all electrical supplies to the boiler
module before opening the front cover and
commencing any servicing or component exchange
procedure. Turn off the gas at the service valve.
11.1 HT Electrode and Flame Probe -
HT Ignitor Electrode
Part nos. 533805029 UF100, UF150, UF300 & UF350
Part nos. 533805030 UF200 & UF250
Flame Sensing Probe—Part nos. 533805021
Note: - The electrode and flame probe ceramics are
very fragile.
Disconnect the HT cable from the electrode. Remove the
2 M4 screws securing the electrode to the heat
exchanger and carefully remove the electrode and it’s
gasket. Check the condition of the ceramic, wires and
the spark gap. Adjust if necessary. In replacing the
electrode, fit a new gasket and take care when feeding
the wires through the heat exchanger aperture. Carefully
re
- connect the HT cable to the electrode.
Disconnect the cable from the flame probe. Remove the
1 M4 screw securing the probe to the heat exchanger
and withdraw the probe. Check the condition of the
ceramic and wire. In replacing the probe fit a new gasket
and refit the cable.
To check the position of the electrode and probe in
relation to the burner, remove the burner and refer to
Figures 10.2.1 & 10.2.2
11.2 Flow / Return sensor - part no. 533901675
Note: The flow/return sensors are immersed in the
water circuit. To remove/replace will require the heat
exchanger to be drained.
The two identical sensors are located in the return and
flow connections. Prior to removal, check the resistance
of the sensor against
Figure B 1.3 In refitting the
sensor, a sealant will be required on the threads. Check
for water soundness before firing the boiler.
11.3 Flue Gas sensor - Part no. 533901675
The flue gas sensor is located in the flue elbow (175 -
250) or sump sealing plate (300 - 350) at the rear of the
boiler. Prior to removal, check the resistance of the
sensor against
Figure B 1.3 In refitting the sensor, a
sealant will be required on the threads. Check for
soundness of the joint when firing the boiler.
11.4 Temperature Limiter (Limit Stat)
Part no. 533901583
The limit stat is a bi - metallic disc type located on the front
of the heat exchanger assembly, secured by two screws.
Disconnect the electrical connections and remove the
screws
Beware the terminals are 230v!
11.5 Water Flow switch
Part no. 533901860 - UF100 & UF150
Part no. 533901859 - UF200 to UF350
Note: The flow switch is immersed in the water
circuit. To remove/replace will require the heat
exchanger to be drained.
The water flow switch is located in the return pipe on the
pump inlet. Undo the union and carefully withdraw the
switch assembly from the pipe. The switch consists of a
magnetic reed switch providing open or closed circuit. In
fitting a replacement switch ensure that a new sealing
gasket is used.
11.6 Gas Valve
Part no. 533903044 UF100 & UF150
Part no. 533903036 UF200 to UF300
Part no. 533903045 UF350
All models - isolate the gas supply using the valve
located in the bottom left hand corner. To access this
valve, first remove the air inlet elbow from the venturi by
removing the worm drive clip and 4
- M6 fixing screws.
Disconnect the electrical lead and pressure sensing
tube.
Remove the 4 - M5 screws securing the inlet fitting to the
gas valve. Remove the gas orifice, if fitted (LPG
UF200to UF300).
Support the weight of the valve and remove the 4 - M5
screws securing the gas valve to the venturi manifold.
When replacing the gas valve using new ‘o’ rings and
gasket.
All models - reassemble in reverse order and check all
joints for gas soundness.
11.7 Fan
Part no. 533704014 UF100 & UF150
Part no. 532418015 UF200 & UF250
Part no. 533704016 UF300 & UF350
To remove the fan it is preferable to remove the
complete fan, gas valve and venturi assembly. To
access this valve, first remove the air inlet elbow from
the venturi by removing the worm drive clip and 4
- M6
fixing screws.
Disconnect the electrical lead and pressure sensing tube
from the gas valve.
Disconnect the two electrical plugs (power supply and
speed control signal) from the fan motor.
Disconnect the gas supply from the inlet to the gas valve.
Carefully disengage the air inlet duct from the venturi.
Remove the 4
- M5 screws securing the fan assembly to
the burner transition duct. Take care not to drop any
screws into the duct opening.
Carefully withdraw the complete assembly and place on
a suitable working area.
Remove the screws securing the gas valve and venturi
assembly to the fan inlet, noting the position of the
venturi.
All models - reassemble in reverse order using new
gaskets and check all joints for gas soundness.
11.8 Main control pcb - LMS - refer to spares list
The LMS is located by two screws on the electrical
control panel which is secured to the boiler chassis .
Carefully disconnect all plug connections from the LMS,
taking note of their location. The plugs are polarised to