Biolet Support Center
Documentation
Replacing the fan motor - 20 Deluxe - 10 Standard
Tools Required: Phillips Screwdriver, Standard Screwdriver, Pliers, 7mm or Crescent Wrench.
- Unplug the electricity.
- Disconnect the vent pipe and lift slightly on the front of the unit and pull the toilet forward.
- Unscrew the retaining nut from the switch behind the seat and push the switch inside the unit. On the Standard model, the shear pin must be removed by tapping it out with a small punch or nail and the handle has to be taken off.
20 Deluxe
10 Standard - Remove thermostat knob by gently prying upward with a standard screwdriver
- Unscrew the compost cover retaining nut by using a standard screwdriver and turning the nut counter-clockwise. Remove the top by lifting on the front of the top while pushing in on the switch. Once the switch has cleared the hole in the top, lift on the rear of the top. The top may stick slightly due to silicon sealant used in production.
- Remove wire clamp at the top of the cassette by removing 2 Phillips screws.
- Unplug wires to the mixing motor (that were under the clamp removed in last step) from terminal block noting position of each wire using the chart below.
Note: Needle nose pliers and a slight side-to-side wiggle of the wire may be required as the connectors may fit tightly. DO NOT USE A FORWARD AND BACK WIGGLE. THIS MAY BREAK THE TERMINAL.
Terminal # Wire Color 1 2 
- Write the appropriate wire color in the respective block as you remove the wires
- Unplug the ground wire (green wires) from the fan motor using the same motions as before.
- Remove the four Phillips screws holding the cassette.
- Remove the cassette by lifting it.
- Cut and remove the nylon wire tie around the fan motor wires.
- Disconnect the wires to the fan from the terminal block noting the position of each wire using the chart below.
Terminal # Wire Color 1 2 
- Write the appropriate wire color in the respective block as you remove the wires
- Remove the large white fan blade by gently prying upward on the center hub, against the shaft, with a standard screwdriver.
- Using a 7mm wrench or crescent wrench remove the 2 nuts holding the motor. Remove the motor.
- Reinstall the fan motor using the picture and steps below.
- Place 2 spacers over the mounting studs on the motor.
- Place the rubber washer over the fan shaft.
- Place the mounting studs and shaft through the mounting holes in the cassette with the motor on the same side of the cassette as the terminal block.
- Turn cassette over so the mounting studs and shaft are upward.
- Slip the flat steel washers onto the studs followed by the locking nuts.
- Tighten the locking nuts using your 7mm wrench or crescent wrench. DO NOT OVER TIGHTEN!
- Reinstall the fan blade (white) with the clamped end toward the cassette sliding the hub down till it is ½ inch from the cassette. Note: Lay the cassette on a hard surface and apply pressure to the fan hub. Pressing on the fan blades may break them.
- Replace the cassette into the unit base. Screw into place with 4 screws removed in step 9.
- Reconnect the fan motor power wires to the terminal block using the chart in step 12.
- Reconnect the ground wires (green wires) to the motor that were removed in step 8.
- Reconnect the wires from the mixer motor to the terminal block using the chart in step 7.
- Replace the wire clamp holding the wires to the mixer motor that you removed in step 6.
- Put the top back on and connect the nut holding the switch behind the seat. On the Standard model, put the handle back and reinstall the shear pin.
- Plug the unit into a 120VAC outlet and test the operation.
- Put the toilet in place and reconnect the vent pipe.
