GRAND 300™ CARE GUIDE

KEEP YOUR GRAND 300™ PERFORMING BEAUTIFULLY.

A little regular care helps maintain strong, consistent atomisation and keeps your waterless diffuser performing at its best.

EVERYDAY CARE

SIMPLE CARE. CONSISTENT SCENT.

A few small habits help keep your Grand 300™ clean and performing consistently.

KEEP IT UPRIGHT

Always keep the Grand 300™ upright during use and storage.

USE THE RIGHT CLEANER

Use 91–95% isopropyl alcohol for maintenance cleaning.

KEEP THE OUTLET CLEAN

Occasionally wipe the mist outlet with a soft, clean cloth.

KEEP YOUR BOTTLE SECURE

Make sure the fragrance bottle is fitted firmly before use.

PERIODIC MAINTENANCE

THE 15-MINUTE IPA CLEANING CYCLE.

This simple routine helps dissolve fragrance-oil residue inside the atomiser before it begins to affect mist output.

Use 91–95% isopropyl alcohol only. Keep away from heat or flame and use in a well-ventilated area.

  1. 01

    REMOVE YOUR FRAGRANCE

    Switch the diffuser off and remove the fragrance bottle.

  2. 02

    ADD A LITTLE IPA

    Add a small amount of 91–95% isopropyl alcohol to a clean compatible bottle.

  3. 03

    RUN FOR 15 MINUTES

    Fit the IPA bottle and run the diffuser for approximately 15 minutes.

  4. 04

    ALLOW IT TO AIR

    Switch off and allow remaining alcohol vapour to clear.

  5. 05

    REINSTALL YOUR OIL

    Refit your fragrance bottle and resume normal use.

Do not add water to the diffuser or fragrance oil.

MAINTENANCE SCHEDULE

WHEN SHOULD I CLEAN MY GRAND 300™?

12

MONTHS BETWEEN ROUTINE CLEANS

For regular household use, a preventative IPA cleaning every 1–2 months is a good starting point.

WE ALSO RECOMMEND CLEANING WHEN:

  1. CHANGE OF FRAGRANCE

    You switch to a noticeably different scent.

  2. WEAKER MIST

    Mist output becomes weaker or inconsistent.

  3. LONG PERIOD UNUSED

    The diffuser has not been used for an extended period.

  4. VISIBLE RESIDUE

    You notice fragrance residue around the atomiser.

  5. PERFORMANCE CHANGES

    Scent performance becomes noticeably different.

TROUBLESHOOTING

SOMETHING DOESN’T SEEM QUITE RIGHT?

Start with these quick checks before contacting support.

VERY LITTLE OR NO MIST

Check that the diffuser is powered on, the bottle is fitted correctly and the atomiser is clean.

MIST OUTPUT SEEMS WEAK

Run the 15-minute IPA cleaning cycle and check that your schedule and intensity settings are appropriate.

NO MIST AFTER CHANGING OIL

Make sure the bottle is firmly fitted and allow the diffuser a short period to draw the new oil through the system.

FRAGRANCE SEEMS WEAKER THAN BEFORE

Check your schedule and intensity, then clean the atomiser if performance has gradually declined.

SCENT IS TOO STRONG

Increase the Scent Off period or reduce the intensity.

SCENT IS TOO LIGHT

Increase Scent On time gradually or shorten the Scent Off period.

OIL COLLECTING AROUND THE OUTLET

Stop the diffuser, wipe away residue and perform a cleaning cycle if required.

APP WILL NOT CONNECT

Make sure Bluetooth is enabled, keep your phone close to the diffuser and retry the connection.

IF YOUR MIST OUTPUT LOOKS WEAK, START HERE.

  1. 01

    Power off the diffuser.

  2. 02

    Check the bottle is seated correctly.

  3. 03

    Inspect and gently clean the mist outlet.

  4. 04

    Run the 15-minute IPA cleaning cycle.

  5. 05

    Reconnect the fragrance and test again.

EVERYDAY CARE

A FEW SIMPLE DO’S AND DON’TS.

DO

  • Keep the diffuser upright during use
  • Use fragrance oils designed for waterless cold-air diffusion
  • Keep the mist outlet clean
  • Secure the fragrance bottle firmly
  • Use 91–95% IPA for maintenance cleaning

DON’T

  • Add water to the Grand 300™
  • Use heavily diluted or unsuitable liquids
  • Place the diffuser directly beside heat sources
  • Run the diffuser while performing maintenance
  • Allow oil or IPA to spill inside the electronics

FRAGRANCE COMPATIBILITY

FULL-SIZE NOBL OILS FIT STRAIGHT IN.

NOBL 200ml fragrance oils are designed to fit directly into the Grand 300™ for a simple, low-maintenance scenting system.

  • 200ML CAPACITY

    Use full-size NOBL fragrance bottles directly.

  • NO POURING REQUIRED

    Swap the bottle rather than transferring fragrance between containers.

  • MADE FOR WATERLESS DIFFUSION

    Professional fragrance oils designed for cold-air scenting.

EXPLORE FRAGRANCE OILS

QUICK ANSWERS

CARE & MAINTENANCE FAQS.

Do I need to clean the Grand 300™ after every fragrance?

No. Routine cleaning is normally enough, although cleaning between very different fragrances can help reduce scent crossover.

Can I use water to clean the atomiser?

No. Do not add water to the diffuser. Use 91–95% isopropyl alcohol for internal maintenance cleaning.

Is a little oil residue around the atomiser normal?

A small amount can occur during use. Wipe visible residue with a soft cloth and clean the atomiser if build-up develops.

What should I do if the diffuser output becomes weak?

Check the bottle and outlet first, then run the 15-minute IPA cleaning cycle.

Can the Grand 300™ become clogged?

Oil residue can gradually affect atomisation, which is why periodic cleaning is recommended.

What happens if oil runs out?

Replace the empty bottle with a compatible fragrance bottle before continuing use.

WE’RE HERE TO HELP

STILL HAVING TROUBLE?

If cleaning and the quick checks above haven’t solved the issue, contact NOBL support and we’ll help you troubleshoot your Grand 300™.

CONTACT NOBL SUPPORT VIEW SETUP GUIDE →