Instruction Manual

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Grindmaster 115 and 250 Series

Coffee Grinders

Operation and Instruction Manual

for

Models 115A, 115AB, 250, 250A, 250AB & 250-3A

Table of Contents

Installation Instructions ................................2

Set-up Procedures........................................2

How to Operate ............................................2

Timer Adjustment..........................................3

Grind Selector™ ..........................................4

Coffee Grind Profile, Grind Adjustment ........5

Current, Protection, Circuit Breaker ............5

Lubrication ....................................................5

Cleaning Instructions ....................................6

Removal and Reinstallation

of Upper Hopper Assembly ..........................6

Shear Disc Replacement..............................7

Troubleshooting Guide ..............................8-9

Exploded Views ....................................10-12

Wiring Diagram......................................13-15

Grindmaster Corporation™

4003 Collins Lane

Louisville, Kentucky 40245 USA

(502) 425-4776 (800) 695-4500

(800) 568-5715 (Technical Service)

FAX (502) 425-4664

www.grindmaster.com

Printed in the USA

1004 Form # GR-373-03

Part# 85358

Prior authorization must be obtained

from Grindmaster Corporation for all

warranty claims.

Model 250

Model 115

Summary of content (16 pages)

PAGE 1
Grindmaster 115 and 250 Series Coffee Grinders Operation and Instruction Manual for Models 115A, 115AB, 250, 250A, 250AB & 250-3A Table of Contents Installation Instructions ................................2 Set-up Procedures........................................2 How to Operate ............................................2 Timer Adjustment..........................................3 Grind Selector™ ..........................................4 Coffee Grind Profile, Grind Adjustment ........
PAGE 2
PAGE 3
Installation Instructions 1. 2. 3. 4. 5. 6. 7. Please read this manual before operating the grinder. Carefully remove grinder from carton. Place grinder in position on shelf, counter or flat surface. Plug grinder into standard electrical outlet. Avoid using an extension cord. Grind a small amount of whole bean coffee following operating instructions as described in this manual. If there is any problem, consult the Trouble Shooting Guide in this manual and also on the back of your grinder.
PAGE 4
Timer Adjustment The Timer is preset at the factory, but should adjustments be required, follow the instructions below to set the grind times. Note: The grinder power must remain ON for timer adjustments. Figure A Digital Grinder Timer Adjustments (All Models) 1. To access timer, remove the timer cover by removing the mounting screws and pulling the cover away from the casing. 2.
PAGE 5
Grind Selector™ For Models 115AB and 250AB Models equipped with a Grind Selector are designated with a “B” at the end of the model number (Model 115AB & 250AB). If your grinder is equipped with a Grind Selector, refer to the following information: The Grind Selector allows you to set the grinder to coarse or fine on any of the 250AB four grind selections: regular small, regular large, decaf small or decaf large.
PAGE 6
The following section pertains to all models. Coffee Grind Profile Before shipment, this grinder has been tested with coffee and has been accurately adjusted to deliver a standard autodrip grind. The Grinding Burrs are made of an extremely hard and wear resistant alloy. From time to time, grind adjustments (see instructions below) may be necessary as the burrs wear.
PAGE 7
Cleaning Instructions The outside of the machine can be cleaned with a damp cloth or common household polishing wax. Grinding parts should be cleaned with a stiff brush or dry cloth. Do Not Use Water. See “Shear Disc Replacement” for instructions on assembling and disassembling of grinder parts. Before reassembling, wipe motor shaft with 2 or 3 drops of common household lubricating oil in the area of feedworm engagement to make assembly easier. Removal and Reinstallation of Hopper Assembly 1.
PAGE 8
(86235) (86218) Figure H: Grinder Head Mechanism Shear Disc Replacement If the motor should run and no coffee is dispensed, the shear disc release may have operated. Should this occur, perform the following operations in the sequence given (refer to Figure H). Tools Required: Phillips Screwdriver and Pliers 1. Unplug machine. 2. Remove the Upper Front Plate of the grinder to provide access to the grinder mechanism. 3. Remove the Grind Cap by taking out the 2 Thumb Screws. 4.
PAGE 9
Troubleshooting Guide The following procedures must be performed by a qualified service technician. CAUTION: Unplug the machine before cleaning or servicing the unit. Problem Grinder will not start when Start button is pushed. Possible Cause • Plug not in outlet properly. • No power to outlet. • Circuit breaker has tripped Grinder runs or hums but no coffee is dispensed. • Shear disc is broken. • Obstruction in opening to grinding chamber. • Auger has stalled (models 250 & 250A only).
PAGE 10
Troubleshooting Guide for Grind Selector™ Mechanism (Models 115AB and 250AB) The following procedures must be performed by a qualified service technician. PROBLEM POSSIBLE CAUSE SOLUTION Loud grating noise. • Burrs are touching each other on fine grind setting. • Readjust fine grind setting, see “To Adjust Fine Grind” section. Rumbling noise. • Thrust bearing rotating inside flange bearing. • Replace thrust bearing and shear cap. Chattering or buzzing noise.
PAGE 11
Models 115A, 115AB & 250 Series Exploded Views 115 & 250 Series Coffee Grinders Page 10
PAGE 12
Parts List Description Page 11 115 & 250 Series Coffee Grinders
PAGE 13
Parts List Description (cont.
PAGE 14
115A, 115AB & 250 Series Wiring Diagram 115V Page 13 115 & 250 Series Coffee Grinders
PAGE 15
115A &115AB/120V Exploded View 115 & 250 Series Coffee Grinders Page 14
PAGE 16
115A &115AB/120V Exploded View Page 15 115 & 250 Series Coffee Grinders