Service
112
45 Purging valve (V3), check for 0 VDC on input pins
46 Reverse valve (V2), check for 24 VDC on input pins
NOTICE
Do not cause a short circuit while measuring!
• If the voltages on V2, V3, or V4 are wrong replace the electronic drivers.
Pos: 9. 16 /00 20 Übers chrif ten/E LTRA 1.1 Übers chri ften/1 1 Solen oid val ves cle aning ELTRA @ 6\ mod_1369643206541_9.docx @ 42465 @ 222223222 @ 1
5.8 59BSolenoid valves cleaning
Pos: 9.17 /0 010 ELTR A/ 0015 s ervic e_i nstr uc tio ns/C S-800 _Ser vice/ 0025 Ser vic e/036 5 Modul Sol enoi d val ves clea ning @ 6\ mod_1377688643571_9.docx @ 47227 @ 2332333444 @ 1
Fig. 61: Solenoid valves (3-13-1)
• Turn the power switch to pos.0
• Unplug the main power plug as well
• Remove the connector (7)
• Unscrew the nut (1)
• Remove the coil (2) (only with the 2/2 valve)
• Unscrew counter-clockwise the hexagon screw on the armature housing.
• Remove the armature (5) (only with the 2/2 valve)
NOTICE
Do not lose the spring (4).
– With oxygen pressure or compressed air, clean the inside of the armature
housing (3), as well as the armature (5) and re-assemble the solenoid valve.
• With the furnace closed and renewed oxygen pressure, check to ensure that
the solenoid valve is sealed.
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