Buderus 500 - 24/C, Руководство по обслуживанию

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Actions 7
We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk
Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006 59
box 184
z
Fit the servomotor to the 3-way valve.
z
Insert the stop spring.
z
Adjust the DBA control panel, see box 61.
z
Fit casing, see box 51.
box 185 Check the internal 3-way valve – activation
A
CAUTION!
To prevent damage, do not insert the measuring
electrodes of the multimeter too far into the holes of the
plug-and-socket connection.
z
Take the boiler out of operation, see box 43, 44 or 47.
box 186
z
Pull out the power supply plug of the servomotor.
box 187
z
Put the boiler into operation, see box 54 and 55.
box 188
z Set the multimeter to “measure AC voltage”.
Minimum measuring range: 40V AC.
z
Use the "Settings" menu on the boiler DBA control panel
to adjust the temperature to 60 °C, see box 14 or 18.
z Open a hot water tap.
z Check to see if, during operating code
C [0c]
at plug-in
contacts “1” and “3”, 24 V AC is detected between plug-in
contacts “1” and “2” .
z Close the hot water tap.
z Check to see if, during operating code
C [0h]
, 24 V AC
is detected at plug-in contacts “1” and “2” .
1
~
2 0
3 0
box 189
z
Insert the power supply plug of the 3-way valve.
z
Put the boiler into operation, see box 51 or 61.
box 190 Internal 3-way valve – replace the servomotor
z Take the boiler out of operation, see box 43, 44 or 47.
z Remove the power supply plug of the servomotor,
see box 186.
z
Remove the servomotor, see box 182.
z
Fit the new servomotor by following the above procedure
in reverse order.
z Put the boiler into operation, see box 51, 54 or 55.
box 191 Check the internal 3-way valve – power supply
cable
H
DANGER OF FATAL ACCIDENT
due to electric shock
A
CAUTION!
To prevent damage, do not insert the measuring
electrodes of the multimeter too far into the holes of the
plug-and-socket connection.
z Take the boiler out of operation and remove the DBA
control panel, see box 43, 44, 47, 63 or 70.
z
Remove the power supply plug of the servomotor of the
3-way valve, see box 186.
box 192
z Set multimeter to “measure resistance”.
z Check the power supply cable of the 3-way valve for
breaks. The electrical resistance measured at each
individual wire must be approximately 0
Ω
.
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JP4
9
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