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TOLL FREE:

 

1-800-798-7398

Cleaning and Maintenance

 

CAUTION:

 Make sure that the power 

head is unplugged from power source 
before inserting or removing any 
attachment and before cleaning.

 

DO NOT

 immerse the power head into 

water or any other liquid. Clean with a 
damp sponge or cloth and wipe dry.  

To purchase replacement parts, please visit our website: www.ninjakitchen.com 

or contact customer service: 1-800-798-7398.

PROBLEMS

POSSIBLE REASONS & SOLUTIONS

Motor doesn’t start 

or blades don’t rotate.

     

 

Check that the bottom of motor head is clean and 

there is no food blocking connection when placing 
on containers.

     

 

There is too much food in the container.

     

 

The unit has overheated.  Unplug and wait 

approximately 10 minutes before using again.

     

 

Make sure the splash guard is securely on container.

     

 Make sure the power head is securely placed on 

splash guard.

     

 Check that the plug is securely inserted into the 

electrical outlet.

     

 Check fuse or breaker.  Replace fuse/reset 

breaker.

Food is unevenly 

chopped.

     

 Either you are chopping too much food at one 

time, or the pieces are not small enough. Try 
cutting the food into smaller pieces of even size 
and processing smaller amounts per batch. 

Food is chopped too 

fine or is too watery.

     

The food has been over processed. Use brief 

pulses or process for shorter time. Let blades 
stop completely between pulses.  

Food collects on 

splash guard/safety 

cover or on the sides 

of the Master Prep

 

pitcher.

     

You may be processing too much food. Turn the 

machine off. When the blades stop rotating, 
remove the power head and the splash guard. 
Remove some of the food being processed.  

You cannot achieve 

snow from solid ice.

      

Do not use ice that has been sitting out or has 

started to melt. Be sure to use short pulses in the 
beginning to break up large pieces.

Troubleshooting Guide

 

The Master Prep

 pitcher, storage 

lid, Master Prep

 splash guard and 

chopping blades are all dishwasher 
safe. It is recommended to place the 
storage lid and the chopping blades 
on the top rack. Use extreme caution 
when handling the chopping blades as 
they are very sharp.

 

Clean the Ninja

 Master Prep

 and all 

parts before first use and immediately 
after each use.

Summary of Contents for Master Prep QB750 Series

Page 1: ...Master Prep Frozen Treat Drink Maker QB750 series OWNER S GUIDE www ninjakitchen com ...

Page 2: ...Unplug appliance from outlet when not in use and before cleaning 6 DO NOT place on or near a hot gas or electric burner 7 The use of accessory attachments including canning jars not recommended by EURO PRO Operating LLC may cause fire electrical shock or risk of personal injury 8 Extreme caution must be used when moving an appliance containing hot food water or other liquids 9 Use this appliance o...

Page 3: ... d h f e g The Ninja Master Prep is an indispensable kitchen tool that is perfect for blending chopping mixing or pureeing when preparing your favorite recipes For best results be sure to carefully read all the instructions contained in the manual before using this appliance 400 Watt Power Head The 400 watt power head operates on 120V 60Hz electrical power NEVER allow the power head to become wet ...

Page 4: ...ry to place the blades onto the power head and then into the Master Prep pitcher 7 To start the appliance plug the power cord into the electrical outlet securely hold power head while operating and press on the on off pulse button located on the top of the power head fig 5 8 Hold the Master Prep pitcher firmly while depressing the on off pulse button to ensure the unit stays in place NOTE DO NOT o...

Page 5: ...aker Food is unevenly chopped Either you are chopping too much food at one time or the pieces are not small enough Try cutting the food into smaller pieces of even size and processing smaller amounts per batch Food is chopped too fine or is too watery The food has been over processed Use brief pulses or process for shorter time Let blades stop completely between pulses Food collects on splash guar...

Page 6: ...ng LLC to be defective in EURO PRO Operating LLC s sole discretion we will repair or replace it free of charge Proof of purchase date and a check made payable to EURO PRO Operating LLC in the amount of 14 95 to cover the cost of return shipping and handling must be included This Limited Warranty is extended to the original purchaser of the unit and excludes all other legal implied and or conventio...

Page 7: ...ating LLC US Newton MA 02459 CAN Ville St Laurent QC H4S 1A7 1 800 798 7398 www ninjakitchen com Copyright 2011 Euro Pro Operating LLC Printed in China Illustrations may differ from actual product QB750_30_E_110527 ...

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