Filling Instruction

Best Practices for Filling Ispire Cartridges

Thanks for choosing Ispire hardware! Here are some best practices to help avoid common issues in filling, capping, assembly, and pressurization.

Preparation:

For easy transfer, ensure that the oil is heated to a temperature of 120 F to 180 F (49°C - 82°C). When hand-filling each unit, avoid overfilling by using a well-metered measuring apparatus with a blunt-tipped injection needle.

Filling:

Identify the airway and oil tank (see Fig 1.)
• The airway is located directly in the center (The airway is not a fill hole)
• The oil tank surrounds the airway and is encased by a clear tube

Position the needle directly into the oil tank
• Carefully avoid the center tube, ensuring no oil is allowed to enter the airway
• To avoid spillage, fully insert the needle so that the tip is in contact with the bottom of the tank

With cartridge vertically-oriented, fill to the exact volume capacity for your model, leaving 1 mm of air at the top, before capping.

Cap immediately, inserting the mouthpiece onto the top-end of the cartridge
• Press on: press it down (less than 6 lbs) into the top of the hardware until it is level and clicks-in (you should hear double click).
• Screw on: screw the mouthpiece clockwise until it fits snugly against the top of the oil tank. (maximum torque of 4in-lb)

Please Note: Our tamper-evident feature results in damage to the parts if a mouthpiece is removed once it’s fully seated.

Caution:

  • Filling with oil that’s too hot can result in hardware malfunction and backpressure.
  • While filling, do not allow fluid to enter the airway or center tube.
  • Avoid excessive force or heavy duty tools (hammer/mallet) to insert mouthpieces.
  • Failure to install the mouthpiece within 1-2 minutes after filling may result in leakage.
  • Failure to replace the silicone end caps back on the hardware before packaging it(to create a vacuum seal) may result in leakage during transport.

FIlling Tips:

To avoid overfilling your cartridge or disposable, use a needle to hand-fill, leave some air at the top, and cap immediately. For best results, allow the oil to fully absorb by letting the hardware stand upright for ≥ 24 hours in a warm environment.

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