Grindmaster 890 User Manual

Operator Manual

800 Series Coffee Grinders

Models 810, 835, 875, 890

Model 810	Model 835	Model 875	Model 890

Table of Contents

Specifications...........................	2	Cleaning & Maintenance	........5
Safety Information..................	3	Troubleshooting Guide...........	6
Installation...............................	3	Parts Diagram and List ...........	7
Operation ................................	4	Wiring Diagram.....................	10

Thank you for purchasing this quality coffee grinder. For your safety and the safety of others, read all warnings and the operator’s manual before installing or using the product. Properly instruct all operators. Keep training records. For future reference, record serial number here:

GMCW

4003 Collins Lane, Louisville, KY 40245 USA Phone: [phone] Toll Free: 800.695.4500 Fax: [phone]

Web: gmcw.com Email: [e-mail]

©1995 GMCW

Printed in USA

GMCW provides the industry’s BEST warranty. Visit gmcw.com for warranty terms and conditions.

0615 Form # GR-380-18

Part # 83427

Specifications

Model

Description

Electrical

810S

Medium duty grinder - 1.5 lbs hopper.

120V / 920 W / 8A / 1 Ph

C-UL US, ETL Sanitation Certification

835S

Medium duty grinder - 1.5 lbs hopper.

120V / 920 W / 8A / 1 Ph

C-UL US, ETL Sanitation Certification

875S

Medium duty grinder - 3 lbs hopper.

120V / 920 W / 8A / 1 Ph

C-UL US, ETL Sanitation Certification

Medium duty grinder with European slicing burrs

890BS

- 3 lbs. hopper.

120V / 920 W / 8A / 1 Ph

C-UL US, ETL Sanitation Certification

Medium duty grinder with European slicing burrs

890T

- 5 lbs. hopper.

120V / 920 W / 8A / 1 Ph

C-UL US, ETL Sanitation Certification

2	Grindmaster®	800 Series Coffee Grinders

Safety Information

Important Safety Information

This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.

For your safety and the safety of others, read all warnings and the operator’s manual before installing or using the product.

DANGER: This term warns the user of imminent hazard that will result in serious injury or death. WARNING: This term refers to a potential hazard or unsafe practice, which could result in serious injury or death.

CAUTION: This term refers to a potential hazard or unsafe practice, which could result in minor or moderate injury.

NOTICE: This term refers to information that needs special attention or must be fully understood.

WARNING

•Product must be attached to a three wire 120V 15 AMP receptacle (export units - 230V 16 AMP). •Do not deform plug or cord.

•Follow national and local electrical codes. •Do not use near combustibles.

•Use only on a circuit load that is properly protected and capable of the rated load. •Always unplug unit from power supply before servicing or cleaning.

FAILURE TO COMPLY RISKS PERSONAL INJURY, SHOCK HAZARD, FIRE, OR DAMAGE TO EQUIPMENT.

CAUTION

Personal injury hazard. Keep fingers, hands, and foreign objects out of hopper or chute opening. Model 890T must be bolted to the counter to prevent possible bodily injury from overturning.

NOTICE

Never connect to an overloaded circuit or to an extension cord, otherwise serious damage to the motor may result.

Installation

CAUTION: Risk of bodily injury due to tipping. Use care when installing Model 890T.

NOTICE: It is essential that full voltage and amperage always be available as it takes full power to grind coffee.

Please read this manual before operating the grinder.

1.Carefully remove grinder from carton.

2.Place grinder in position on shelf, counter or other flat surface.

3.(Model 890T only). Using (4) provided 5/16”- 18 x 1 1/2” bolts, washers, and nuts, attach grinder securely to counter.

4.Plug grinder into the specified power source. (Check rating plate on back of unit for voltage and amperage requirements.) Do not use an extension cord.

5.Fill hopper with whole bean coffee.

6.Grind a small amount of whole bean coffee

following operating instructions as described in this manual

7.If there is any problem, consult the Troubleshooting Guide in this manual, (also on back of grinder.)

If you need help, call GMCW Technical Service Department for help, [phone] or [phone] (USA & Canada only) 8 AM - 6 PM EST.

Prior authorization must be obtained from GMCW for all warranty claims.

800 Series Coffee Grinders	Grindmaster®	3

Operation

Your new coffee grinder is easy to operate and maintain. Before you place it in service, please have all personnel familiarize themselves with these instructions. Keep this manual in a convenient place for ready reference.

How to Operate

1.Turn the selector knob to the desired grind setting.

2.Fill the hopper with the desired type and amount of whole bean coffee. Close the lid.

3.Place the bag underneath the spout.

4.Press the start button. *810 model - Press the grinder switch to the ON position.

5.The grinder will automatically stop when the bag is removed.**

*810 model - Once coffee is ground, press the grinder switch to the off position or grinder will continuously run.

**On models 835 and 875 the stop button may be pressed after the grinder has completed grinding.

6.Remove bag from coffee spout once coffee is ground.

Grinds

Before shipment, this grinder has been tested with coffee and has been accurately adjusted to deliver ground coffee to normal auto drip specifications.

The Grinding Burrs are made of an extremely hard and wear resistant material. From time to time, grind adjustments (see following instructions) may be necessary. If the grind runs coarser than expected after normal adjustment and the grind time has increased, the burrs may have excess wear and should be replaced. New burrs should always be installed as a pair, never one or the other, as they are accurately ground and lapped in pairs. Old burrs cannot be resharpened.

Grind Adjustment

Tools required: Phillips screwdriver

Large blade screwdriver

Pliers

1.Remove all coffee from the hopper.

2.Set selector knob to the finest setting (Espresso or Turkish) depending on the model.

3.Loosen both knob retainer screws in selector knob one turn only.

4.While pressing the bag switch, located behind the spout, press the start button so that the grinder will run during

adjustment.

*810 model - Press the on or start button so that the grinder will run during adjustment.

5.With the grinder still running, turn the adjusting screw in the center of the selector knob slowly to the right until a slight chirping noise is heard. Immediately turn the adjusting screw to the left until chirping noise stops. This is the finest grind obtainable.

6.Tighten both of the knob retainer screws. Once the finest grind has been set, the other grind settings will automatically set correctly.

7.Press the stop or off button.

NOTICE: Always be sure the grinding burrs are not touching while the machine is running on the ESPRESSO/TURKISH setting. Otherwise serious damage to the motor may result.

Protection

This grinder is equipped with both a circuit breaker and a shear disc or shear pin to protect motor and burrs.

Circuit Breaker

This grinder is equipped with a circuit breaker to protect the motor from overloading. When the circuit breaker trips, the reset button will pop out approximately 1/4” which stops the power to the grinder. The reset button is located on the front panel of the Model 810, 835 and 875. To reset the circuit breaker, wait two minutes then push in the reset button. You will hear a click as it resets. If the grinder does not operate after resetting the circuit breaker, there may be an obstruction in the grinding mechanism that is stalling the motor. Turn the grind selector knob all the way to the left. Try restarting the grinder. If the circuit breaker “trips” again, the obstruction was not able to pass. In this case, the Grinder Head should be cleaned out as described in the

Shear Disc Replacement section of this manual.

4	Grindmaster®	800 Series Coffee Grinders

Cleaning & Maintenance

Cleaning Instructions

NOTICE: The person cleaning the parts should do so with clean hands.

The outside of the machine can be cleaned with warm soapy water and a damp cloth.

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 grinder parts. Before reassembling, wipe motor shaft with dry cloth.

All other parts that are in contact with food must be washed with warm soapy water, rinsed, and air-dried.

Lubrication

None required.

Shear Disc Replacement

If the motor should run and no coffee is dispensed, the Shear Disc may have sheared. Should this occur, perform the following operations in the sequence given (refer to following drawing).

Tools Required:

Slotted Screwdriver

Pliers

WARNING: Unplug grinder to prevent electrical shock.

1.Remove all of the coffee beans from the hopper.

2.Remove the Grinder Cap by taking out the 2 Cap Screws.

3.(Model 890) Turn Feedworm Assembly such that the slot in the assembly is vertical then

push inward to release the Shear Pin.

4.Pull out the Rotary Burr and Feedworm Assembly. Clean out the Grinder Head, removing all coffee particles from inside of the Grinder Head and the Grinder Cap so that it can be reset properly.

5.Check that no obstruction has been caught on the surface of the teeth of either burr. Remove the Shear Cover and broken pieces of the Shear Disc or Shear Pin. You are now ready to reassemble the grinder mechanism.

6.Slide the Rotory Burr and Feedworm Assembly onto the Drive Shaft.

(Model 810, 835, 875) Insert the shear drive so that the Motor Shaft tongue engages into the shear drive notch.

7.(Model 810, 835, 875) Insert a new Shear Disc by aligning the slot in the Shear Drive with the slot in the hub of the Feedworm. (Model 890) Align slot in Feedworm Assembly with the hole in the motor shaft. Install new Shear Pin.

8.Reassemble the Shear Cover and Grinder Cap. Make certain the Grinder Cap is screwed on tight and is sealed properly against the head and not tilted or misaligned. Otherwise, a proper grind cannot be obtained.

9.Your grinder is now ready to grind.

800 Series Coffee Grinders	Grindmaster®	5

Troubleshooting Guide

Before you call for help, please read the following:

WARNING: Unplug power cord from outlet before cleaning or servicing your grinder.

Problem	Possible Cause	Solution
Grinder will not start when	Bag not under spout.	Place bag underneath spout.
START button is pushed	Plug not in outlet properly.	Install plug in outlet.
	No power to outlet.	Check outlet with lamp or radio to verify
		outlet has power.
Grinder runs or hums but no	Circuit breaker has tripped.	Reset circuit breaker by pushing in reset
coffee is dispensed		button until you hear a click.
	Shear disc is broken.	Replace shear disc. See Shear Disc
		Replacement or instructions on back of
		grinder.
	Obstruction in opening to grinding	Unplug unit. Empty beans out of hopper
	chamber.	and clear obstructions. See Shear Disc
		Replacement for disassembly and
		assembly instructions.
Excessive amount of coffee	Defective chaff mixer spring.	If bent, broken, or missing, replace spring.
chaff flying about		If stuck open with coffee, clean out coffee
		to free spring.
	Outlet not properly grounded.	Check power cord end and outlet for
		proper ground.
	Static electricity.	Tighten all nuts, bolts, and screws and
		verify outlet is grounded.
Circuit breaker continuously	Insufficient amperage due to use of	Plug unit directly into outlet. Do not use.
trips	extension cord.	extension cord.
	Insufficient amperage due to	Designate single line for grinder. Do not
	overloaded line.	use multi-outlet box.
	Grind setting needs adjustment.	Adjust grind to coarser setting (see Grind
		Adjustment).

If you still need help, call GMCW Technical Service Department, [phone] or [phone] (USA & Canada only) (Monday through Friday 8 AM - 6 PM EST). Please have the model and serial number ready so that accurate information can be given.

Prior authorization must be obtained from GMCW for all warranty claims.

GMCW provides the industry’s BEST warranty. Visit our website at GMCW.com for warranty terms and conditions.

6	Grindmaster®	800 Series Coffee Grinders

Parts Diagram and List

800 Series Coffee Grinders	Grindmaster®	7

Parts Diagram and List (continued)

800 Series

Item #	DESCRIPTION	120V GROCERY GRINDER PART NUMBERS								230V GROCERY GRINDER PART NUMBERS
		810-BS	835-BS		875-BS & 875-RS		890-BS		890-B-T	810E-BG	835-B- 230VG	835-R- 230VG		835-R- 230VS	875-B- 230V	875-R- 230V		890E-BG
1 *	Casing, grocery	83332 *			83362*				82356*	83332 *		83332 *				83362 *
2 *	Base	83302 *		83321 *					82355*	83302 *		83321 *				83321 *
3 *	Front panel	83316 *	83301 *		83363 *				82362*	83316 *		83301 *				83363 *
4 *	Lower front	83305 *	80072		80073				82360	83305 *		80072				80073
5 *	Top, bifold lid			-							83308BK or 88308RK							-
6 *	Lid, bifold hinge			-							88704BK or 88704RK							-
7 *	Top, 800 series		83451BK or 83451RK									-						83451 *
	sanitation
8 *	Lid, 800 series sanitation		83450BK or 83450RK									-						83450 *
9	Knob, lid		86223					86246				86223						86246
10	Screw, #8 x 1/4 ph tr hd
11	Screw, #8 x 3/8" sl ovl		86914										86914
12	Plate, knob retainer		82024										82024
13	Knob, grind select		82022										82022
14	Pointer, knob		88027										88027
15	Screw, #6-32 x 1/4"		86866										86866
16	Plate, detent	83361		82025						83361			82025
17	Screw, #8-32 x 1/4"		86224										86224
18	Screw, grind adjust		82023					86434				82023						86434
19	Pin, grind adjust		71298										71298
20	Screw, 5/16-18 x 1"		86887										86887
21	Plunger, detent		83318										83318
22	Spring, detent		83443										83443
23	Grinder cap		82021					86439				82021						86439
24	Cover, shear		86355										86355
25	Disc, shear (890 - Shear		86123					86620				86123						86620
	pin)
26	Drive, shear		86154					-				86154						-
27	Feedworm		85188					86468				85188						86468
28	Burr set		85281W					86430				85281W						86430
29	Screw, #10-32 x 5/16"		350-00014									350-00014
30	Feedworm spring		-					86432				-						86432
31	Tension spring		86118					86438				86118						86438
32	Thrust collar		86304					-				86304						-
33	Grinder head	84171S	84172					86435		84171S			84172					86435
34	Nut, 1/4-20 cage		86864										86864
35	Motor, 1/2hp 120VAC		86419					86581				[86421]						86581
	60Hz [230VAC 60Hz]
36	Gasket, hopper		88211										88211
37	Finger guard		83324										83324
38	Hopper	83356			88280				82365		83356					88280
	Circuit breaker, 10amp
39	for 120VAC [5amp for		86618									[83107]
	230VAC]
40	Screw, #10 x 1/2", sems,		86868										86868
	tr ph
41	Screw, spout flap	-		60288						-			60288
42	Eyelet, 0.162 ID, rolled	-		82039						-			82039
	edge

8	Grindmaster®	800 Series Coffee Grinders