# Dispenser Assembly & Disassembly ### Table of Contents * [Assembling Your Smart Dispenser](#assembling-your-smart-dispenser) * [Disassembling Your Smart Dispenser](#disassembling-your-smart-dispenser) * [Replacing A Nozzle Only](#replacing-a-nozzle-only) * [When To Use The Nozzle Wrench](#when-to-use-the-nozzle-wrench) ## Assembling Your Smart Dispenser #### Step 1: Mount the pressure sensor Open the dispenser door and insert the couple with the pressure window facing the pressure sensing pin in the dispenser body.

#### Step 2: Attach a nozzle To attach your nozzle to the end of the coupler, hold the couple in place with your thumb, and twist the nozzle **clockwise**. Tightening by hand is all you need. {% hint style="danger" %} **It’s very important to not overtighten the nozzle!** {% endhint %}

#### Step 3: Secure the pressure sensor and nozzle Close the dispenser door and secure it with the thumbscrew, tightening it **clockwise**.

#### Step 4: Insert a material Remove the caps from both ends of your material’s cartridge and slide the cartridge into the dispenser body so it seats fully onto the coupler.

#### Step 5: Mount the motor plunger Gently insert the motor plunger into the top of your material cartridge, aligning the notch on the motor body to the Voltera logo on the dispenser body. Once it bottoms out, twist the motor **90° clockwise** to lock it in place.

You now have a fully assembled smart dispenser that is ready to be mounted to NOVA.

## Disassembling Your Smart Dispenser #### Step 1: Remove the nozzle To protect the nozzle, you need to remove it first. Loosen the thumbscrew by rotating it **counterclockwise** on the dispenser door, and then open the dispenser door. There is a black collar on the coupler. Rotate the black collar **clockwise** to eject the nozzle. You will feel some resistance at first, then it should turn easily and release the nozzle.

Replace the nozzle with an orange tip cap to prevent air from entering the cartridge. Finally, close the dispenser door and secure it with the thumbscrew. {% hint style="info" %} Preventing air from entering the cartridge is the key to consistent prints and the longevity of your material. Introducing air pockets to your material can cause leakage and undesirable print results. {% endhint %}

#### Step 2: Remove the motor plunger and material Unlock the motor from the dispenser body by rotating the motor **90° counterclockwise**. Then, gently pull the motor along with the cartridge out of the dispenser body. Cap your material cartridge and gently remove it from the motor plunger.

#### Step 3: Remove the pressure sensor Loosen the thumbscrew by turning it **counterclockwise** on the dispenser door and open the dispenser door. You’ll now be able to remove the orange cap from the coupler and remove the coupler for cleaning.

You’re now all set for cleaning. ## Replacing A Nozzle Only #### Step 1: Remove the old nozzle To remove the nozzle, loosen the thumbscrew by turning it **counterclockwise** on the dispenser door, and open the dispenser door. There is a black collar on the coupler. Rotate the black collar **clockwise** to eject the nozzle. You will feel some resistance at first, then it should turn easily releasing the nozzle.

#### Step 2: Attach a new nozzle Attach your nozzle to the end of the coupler by holding the coupler in place with your thumb and twisting the nozzle **clockwise**. Tightening by hand is all you need. {% hint style="danger" %} **It’s very important to not overtighten the nozzle.** {% endhint %}

You're now all set to continue printing. ## When To Use The Nozzle Wrench If you find that your nozzle is too difficult to remove from the pressure sensor you can use the supplied nozzle wrench to loosen it. To use the wrench, start by loosening the thumbscrew by turning it **counterclockwise** on the dispenser door and opening the dispenser door. Hold the pressure sensor in place with your thumb and attach the small side opening of the wrench around the nozzle's plastic collar. Gently turn the nozzle **counterclockwise** to loosen it, then remove the nozzle the rest of the way by hand. {% hint style="danger" %} Never use the nozzle wrench to tighten a nozzle onto the pressure sensor. You may damage your pressure sensor. {% endhint %}

Loosening a nozzle with the nozzle wrench

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