Keurig K40 Coffee Maker User Manual

The Keurig K40 Coffee Maker is a single-serve brewing system designed for home use, featuring a 48-ounce removable water reservoir, multiple brew sizes (6 oz, 8 oz, 10 oz), a removable drip tray for tall travel mugs, an energy-saving auto-off function, a descale indicator, and compatibility with all Keurig K-Cup pods. Powered by 120V AC, 60Hz. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Brewing Coffee 7. Maintenance & Descaling 8. Care & Cleaning 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Brewing System, Removable Water Reservoir, Drip Tray, Control Panel, K-Cup Pod Holder, Power Cord.

Feature	Description
Removable Water Reservoir	48-ounce capacity for easy filling and cleaning
Brew Size Selection	Choose from 6 oz, 8 oz, or 10 oz cup sizes
Removable Drip Tray	Accommodates tall travel mugs up to 7.3 inches
Energy-Saving Auto-Off	Turns off automatically after 90 seconds of inactivity
Descale Indicator	Alerts when descaling is required
K-Cup Pod Compatibility	Works with all Keurig licensed K-Cup pods
Power Button	Turns brewer on/off
Brew Button	Initiates brewing cycle
Brew Size Button	Cycles through available cup sizes
Add Water Indicator	LED light alerts when reservoir is low

Installation

Unpack and inspect contents. Place on a clean, stable, level surface near a power outlet.

Remove all packaging materials from inside and outside the brewer.
Wash the removable water reservoir and drip tray with warm, soapy water. Rinse and dry thoroughly.
Place the drip tray in position on the base.
Fill the water reservoir with fresh, cold water and insert it into the back of the brewer.
Plug the power cord into a 120V AC outlet.

WARNING! Do not use the brewer without water in the reservoir. Ensure the brewer is placed away from heat sources and edges of countertops.

First-Time Setup

Prime the brewing system before first use.

Ensure the brewer is off and the water reservoir is full.
Place a large mug (at least 10 oz) on the drip tray.
Lift and lower the brew handle without inserting a K-Cup pod.
Press the POWER button. The brewer will heat up (approx. 3 minutes).
Press the BREW button to run water through the system. Discard this water.
Repeat the brewing cycle once more with just water. Your brewer is now ready for use.

CAUTION! The exterior surfaces may become hot during use. Handle with care.

Specifications

Model: Keurig K40.
Water Reservoir: 48 oz, removable.
Brew Sizes: 6 oz, 8 oz, 10 oz.
Power: 120V AC, 60Hz, 1470W.
Auto-Off: 90 seconds.
Dimensions: 13.1" H x 10.2" W x 13.4" D.
Weight: 7.5 lbs.
Warranty: 1-Year Limited Warranty.

Controls and Settings

Control Panel: POWER button, BREW button, BREW SIZE button, ADD WATER indicator, DESCALING indicator.

Operation: Press POWER to turn on. Select brew size with BREW SIZE button. Lift handle, insert K-Cup, close handle, place mug, press BREW.

Settings: Auto-off is pre-set to 90 seconds and cannot be changed. The descale indicator light will illuminate when mineral buildup requires cleaning.

Brewing Coffee

Brews one cup at a time using Keurig K-Cup pods.

Press POWER. Wait for the ready light.
Lift the brew handle fully.
Insert a K-Cup pod into the pod holder.
Close the brew handle firmly.
Place a mug on the drip tray.
Select your desired brew size (6, 8, or 10 oz).
Press the BREW button. Brewing will complete in under a minute.
After brewing, lift the handle to eject the used pod into the storage basket.

Tip: For best results, use fresh, cold water and run a cleansing brew if the brewer hasn't been used for several days.

Maintenance & Descaling

Regular descaling is essential for performance and longevity.

When to Descale: The DESCALING light will illuminate, or every 3-6 months based on water hardness.
Purchase Keurig Descaling Solution or a vinegar solution (1 part white vinegar to 3 parts water).
Fill the empty reservoir with the descaling solution.
Place a large mug. Run a brew cycle without a K-Cup. Pause halfway and let solution sit in brewer for 30 minutes.
Complete the brew cycle. Discard the solution.
Rinse the reservoir thoroughly. Fill with fresh water.
Run multiple brew cycles with just water (no K-Cup) until the vinegar odor is gone.

WARNING! Never use descaling solutions other than those recommended by Keurig. Unplug the brewer before any maintenance not involving brewing.

Care & Cleaning

Unplug and allow to cool before cleaning.

Exterior: Wipe with a soft, damp cloth. Do not use abrasive cleaners or immerse in water.
Water Reservoir & Drip Tray: Remove and wash with warm, soapy water weekly. Rinse and dry.
Pod Holder & Needle: Remove pod holder assembly periodically and rinse to clear coffee grounds. Use a paperclip to clear the exit needle if clogged.

CAUTION! Do not use steel wool or scouring pads. Never submerge the brewer base, cord, or plug in water.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © Keurig Green Mountain, Inc. All rights reserved. Keurig, K-Cup, and the Keurig logo are trademarks of Keurig Green Mountain, Inc., registered in the U.S. and other countries. For support, visit www.keurig.com or contact 1-866-901-2739.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Brewer won't turn on	No power	Ensure plug is firmly in outlet; check household circuit breaker.
No water flow / small cup	Clogged needle or descaling needed	Descale brewer; clear exit needle with a paperclip.
Water leaks	Reservoir not seated properly	Remove and re-insert reservoir; check for cracks.
Coffee is not hot enough	Cold mug, pre-heat needed	Pre-heat mug with hot water; run a water-only brew cycle first.
Descale light is on	Mineral buildup	Perform descaling procedure as outlined in Section 8.
Brewer stops mid-cycle	Overheating or air pocket	Unplug for 1 hour to reset; ensure reservoir is full and properly seated.

Reset: Unplug the brewer for 2 minutes, then plug back in.

Service: 1-866-901-2739; www.keurig.com