What it is

The first stage feeder, as the name suggests, it is a device that provides the first stage driving force for the AMS to feed the filament, and there are four first stage feeders in one AMS.

When to use

Gears error or visible damage, the detection of the switch is unstable.

Tools and materials needed

H1.5 allen key

Safety warning and Machine state before starting operation

Turn printer power OFF and disconnect the connection with the printer.

Operation guide

Step 1 – (Disassembly) Disconnect the PTFE tube

 Open the AMS cover, press the button on the filaments hub and pull out the PTFE tube.

Step 2 – Remove 2 screws

Remove 2 screws.

Step 3 – Remove the middle frame

Flip the middle frame upward, disconnect the bambu bus cable and the power cable,remove the middle frame module.

Step 4 – Remove the AMS driving_Sleeve Unit

Remove the AMS driving_Sleeve Unit.

Step 5 – Disconnect cable and tube

Disconnect the cable from the main board, and the PTFE tube from the filaments hub. For example, if you want to replace the first stage feeder in slot 1, then you disconnect the correlative cable and tube.

Step 6 – Remove the first stage feeder

According to the first stage feeder that you need to remove, unscrew the 4 fixing screws on its bottom, press on both side of the first stage feeder to remove it.

Step 7 – Disconnect the PTFE tube

Disconnect the PTFE tube.

Step 8 – (Assembly) Connect the PTFE tube

 Connect the PTFE tube to the feeder.

(Note: The tube’s length for the feeders in slot 1&4 is 230mm; for the feeders in slot 2&3 si 195mm ).

Step 9 – Install the first stage feeder

Pass the cable and PTFE through the hole on the middle frame, and install the first stage feeder to place, lock in 4 screws.

Step 10 – Connect cable and PTFE tube

Connect the cable and the PTFE tube.

Connect the cable to the main board, and the PTFE tube to the filaments hub. For example, if you install the first stage feeder in slot 1, then you use the connectors marked with SLOT1.

Step 11 – Install the AMS driving sleeve unit

Install the AMS driving sleeve unit.

Step 12 – Install the middle frame

Place the middle frame into the AMS shell, connect the bambu bus cable and the power cable.

Step 13 – Lock 2 screws

Install the middle frame in place, lock in 2 screws.

Step 14 – Connect the PTFE tube

Check the tube bracket, and insert the PTFE tube, try to pull it out to make sure that the tube is well connected.

How to verify completion/success

Connect the AMS to printer and power on. Load filaments the slot you replace the first stage feeder to the AMS, click “Load” on the screen to start loading the filament.

For example, we replace the feeder in slot 1

And then click unload to unload the filament.

Repeat the loading process 3 times, if all function OK, the replacement is complete and success. Otherwise, check the connections of the cables and filament tubes, if no error found and still malfunction, contact the service team for solution advice.

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