SOG II Type B Floor Ventilation connections

This is the SOG II Type B floor-outlet system for a Thetford C200 cassette toilet. The 2025 manufacturer brochure identifies the SOG system family as 12 V. It uses a fan and replaceable floor filter, so it must not inherit the door-filter or roof-vent maintenance procedure. The retained manufacturer documents cover Type B operation and its Type A/B microswitch installation; they do not provide a complete fuse and extension-cable schedule.

The manufacturer microswitch drawing places the roller against the rear edge of the sliding handle. The pressed microswitch interrupts the electrical feed; opening the blade releases it and starts the fan. Mount the bracket in the illustrated direction and secure it as instructed, including the stated additional rivet. Reversing this relationship can leave the fan running with the toilet closed.

The symbol's positive and negative poles represent the complete kit's 12 V feed, including its dedicated switch harness. They are not a replacement pinout for the microswitch or motor. The reviewed instructions do not establish a complete terminal colour map, branch fuse, motor startup current or extension size. Confirm those from the exact supplied electrical instructions before wiring; the detail page intentionally provides an overview rather than an apparently complete generic circuit.

The English Type B instructions, PDF page 2, require disconnecting the suction hose from the green coupling before withdrawing the cassette. Fit the supplied black closure for emptying, then restore the hose connection when reinstalling the cassette. Do not pull the cassette against an attached hose or leave the ventilation path disconnected after servicing.

Operate the blade through its full travel and confirm that fan operation matches the intended switch sequence without binding. Check the hose and floor outlet for obstruction and leakage. The floor filter cartridge is replaced annually according to the manual: remove the fan from its rubber seating, replace the cartridge and refit the fan fully using the prescribed method. Isolate power before working on the fan or switch.