Spirax Sarco DP27, Installation And Maintenance Instructions Manual

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IM-P470-03 CH Issue 7
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5.9 How to service or renew the solenoid valve
DP27E
Depressurize the valve and turn off the electrical power supply.
59. Undo the retaining nut and slip the entire solenoid enclosure off the solenoid base and
sub-assembly or plugnut / core tube sub-assembly.
60. Unscrew the bonnet or solenoid base sub-assembly and remove the core spring, core
assembly and body gasket.
All parts are now accessible for cleaning replacement. Replace worn or damaged parts
with a complete Spare parts kit (item ' W ', pages 34 and 35) for best results.
61. Reassemble in reverse order paying careful attention to exploded views provided.
5.10 Coil replacement
Switch off the electrical power supply and disconnect the coil lead wires.
62. Undo the retaining nut.
63.
Slip the washer, insulating washers and coil off the solenoid base sub-assembly.
Reassemble in reverse order (see CAUTION above).
CAUTION
The solenoid must be fully reassembled
as the housing is part of, and
completes the magnetic circuit.
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