Hoshizaki DM-200B User Manual

Hoshizaki

“A Superior Degree

of Reliability”

www.hoshizaki.com

Model
DM-200B

Ice and Water Dispenser

Hoshizaki America, Inc.

Number: 73142
Issued: 8-24-2006

SERVICE MANUAL

1

IMPORTANT

Only qualified service technicians should attempt to install, service or maintain
this product. No installation, service or maintenance should be undertaken until
the technician has thoroughly read this Service Manual.

HOSHIZAKI provides this manual primarily to assist qualified service technicians in the
service and maintenance of this product.

Should the reader have any questions or concerns which have not been satisfactorily
addressed, please call, write or send an e-mail message to the HOSHIZAKI Technical
Support Department.

HOSHIZAKI AMERICA, INC.
618 Highway 74 South
Peachtree City, GA 30269

Attn: HOSHIZAKI Technical Support Department

Phone: [phone] Technical Service
[phone]
Fax: [phone]
[phone]
E-mail: [e-mail]

Web Site: www.hoshizaki.com

NOTE: To expedite assistance, all correspondence/communication MUST include the

following information:

• Model Number

• Serial Number

• Complete and detailed explanation of the problem

2

Please review this manual. It should be read carefully before this product is serviced or
maintenance operations are performed. Only qualified service technicians should service
and maintain this product. This manual should be made available to the technician prior to
service or maintenance.

CONTENTS

I. Specifications ...................................................................................................................... 4

II. General Information ........................................................................................................... 5

A. Construction .................................................................................................................. 5

III. Technical Information ........................................................................................................ 6

A. Wiring Diagram ............................................................................................................. 6

IV. Service Diagnosis ............................................................................................................. 7

V. Removal and Replacement of Components ...................................................................... 9

A. Removal and Replacement of Gear Motor .................................................................... 9

B. Removal and Replacement of Solenoid ...................................................................... 10

C. Removal and Replacement of Water Valve ................................................................. 10

VI. Cleaning and Maintenance Instructions ......................................................................... 11

A. Cleaning ...................................................................................................................... 11

1. Cleaning Procedure ............................................................................................... 11

2. Sanitizing Procedure - Following Cleaning Procedure .......................................... 11

B. Maintenance – Exterior Panels ................................................................................... 13

C. Preparing the Dispenser for Long Storage ................................................................. 13

3

I. Specifications

A

C SUPPLY VOLTAGE 115/60/1

A

MPERAGE 1.4

A

MINIMUM CIRCUIT AMPACITY 15

A

MAXIMUM FUSE SIZE 15

A

A

PPROXIMATE ELECTRIC CONSUMPTION 110 W

A

PPROXIMATE STORAGE CAPACITY 200 lbs (91 Kg)

A

PPROXIMATE ICE DISPENSING SPEED 7.5 lbs/min (6 kg/min)

EXTERIOR DIMENSIONS ( W x D x H ) 30" x 28" x 36.4" (762 x 711 x 925 mm) Without 4" Legs
INTERIOR DIMENSIONS ( W x D x H ) 23.3" x 22.4" x 22.5" (592 x 569.5 x 571 mm)
EXTERIOR FINISH Stainless Steel

Galvanized Steel Rear Panel
INTERIOR FINISH Polyethelene 1 pc. Mold
INSULATION Polyurethane Foam
WEIGHT Net 207 lbs (94 kg), Shipping 240 lbs (109 kg)
CONNECTIONS - ELECTRIC Power Cord

- DRAIN Outlet 3/4" FPT

- WATER SUPPLY Inlet 1/2" FPT

GEAR MOTOR 60 W

A

GITATOR Stainless Steel Round Bar 14.5" Dia.

GEAR MOTOR PROTECTION Thermal Protector (Internal)

A

CCESSORIES - OPTIONAL 4" Legs, 4 pcs

OPERATING CONDITIONS VOLTAGE RANGE 104 - 132 V

A

MBIENT TEMP. 45 - 100° F
WATER SUPPLY TEMP. 45-90°F
WATER SUPPLY PRESSURE 10-113 PSIG

A. DM-200B

Note: We reserve the right to make changes in specifications and design without prior

notice.

4

II. General Information

A. Construction

1. DM-200B

Manual Fill Cover

Agitator

Bin

Water Dispense Switch

Capacitor

Ice Dispense Switch

Spout

Front Panel

Apron Panel

Drain Grill

Water Valve

Side Panel

Gear Motor Assembly

Solenoid Assembly

5

III. Technical Information

A. Wiring Diagram

1. DM-200B

6

IV. Service Diagnosis

Problem Possible Cause Remedy

[1] No ice dispensed. a) Power Supply 1. Off at breaker or cord

unplugged.

2. Loose connection. 2. Tighten.

3. Bad contacts. 3. Check for continuity and

b) Dispense Switch 1. Bad contacts. 1. Check for continuity and

2. Loose connection. 2. Tighten.

c) Gear Motor 1. Thermal protector is

tripped.

2. Gear motor winding
opened.

3. Bearing worn out. 3. Replace.

4. Wiring to gear motor. 4. Check for loose

5. Defective capacitor. 5. Replace.

6. Agitator rotates in
reverse direction.

d) Solenoid 1. Solenoid winding

open.

1. Turn on or plug in cord.

replace.

replace.

1. Allow to cool.

2. Replace.

connection or open
circuit, and replace wiring
as needed.

6. Check leads and reverse
the connections.

1. Replace.

2. Wiring to solenoid. 2. Check for loose

3. Overload due to
loosening screws.

e) Mechanism 1. Chain out of position

or loose.

2. Corrosion. 2. Apply oil.

3. Key of sprocket is not
in position.

4. Bad alignment of
sprocket.

5. Foreign matter
interrupting agitator.

f) Ice Storage 1. No ice or little ice in

storage bin.

2. Ice bridge or block
formed.

[2] No water dispensed. a) Power Supply 1. Off at breaker or cord

unplugged.

connection or open
circuit, and replace wiring
as needed.

3. After tightening, apply
thread sealant to the
parts.

1. Place in position or
tighten.

3. Place in position.

4. Readjust.

5. Remove foreign matter.

1. Fill bin with ice.

2. Break with a poker.

1. Turn on or plug in cord.

2. Loose connection. 2. Tighten.

7

Problem Possible Cause Remedy

3. Bad contacts. 3. Check for continuity and
replace.

b) Water Supply 1. Off or disconnected. 1. Turn on or connect.

c) Dispense Switch 1. Bad contacts. 1. Check for continuity and

replace.

2. Loose connection. 2. Tighten.

[3] Abnormal noise. a) Gear Motor or Gear

Head

b) Mechanism 1. Bad setting. 1. Apply oil and readjust.

c) Solenoid 1. Overload due to

[4] Ice supply in storage

bin often melts.

a) Bin Drain 1. Clogged. 2. Unclog.

1. Bearing worn out. 1. Replace.

2. Grease leaks. 2. Supply grease and
replace O-ring.

2. Bad alignment of

sprocket.

3. Foreign matter

interrupting agitator.

loosening screws.

2. Foreign matter on

plunger.

2. Readjust.

3. Remove foreign matter.

1. After tightening, apply
thread sealant to the
parts.

2. Clean.

8

V. Removal and Replacement of Components

IMPORTANT

Ensure all components, fasteners and thumbscrews are securely in place after
the equipment is serviced.

A. Removal and Replacement of Gear Motor

1) Unplug the unit from the electrical outlet.

2) Remove the panels.

3) Disconnect the gear motor wiring harness.

4) Loosen the adjustment bolt, then loosen
the four bolts securing Gear Motor Bracket
(B).

5) Slide Gear Motor Bracket (B) up to its
highest position and retighten.

6) Remove the chain.

7) Loosen the socket set screw securing the
sprocket, then use a gear puller to remove
the sprocket.

8) Remove the bushing from the barrier and
slide the gear motor wires free of the
barrier. Release the wires from the wire tie
on the barrier.

Bolts

Lower sprocket
takes a 2.5 mm
allen wrench.

Bushing

Adjustment Bolt

Bolts

Chain

Gear Motor
Bracket (B)

Sprocket

Gear Motor

Barrier

9) While supporting the gear motor and
barrier, remove the four bolts securing
them to Gear Motor Bracket (B). Carefully
remove the motor and barrier.

Sprocket

Gear Motor
Bracket (B)

Bolt

10) Install the new gear motor, assembling the removed parts in the reverse order of the
above procedure.
Note:

• When weight (2.2 lb) is applied to the chain at the center, the displacement must be

0.31 to 0.51".

• Lubricant (Class SAE 20) must be applied to the chain using a cloth.

11) Replace the panels in their correct positions.

12) Plug the unit back in.

9

B. Removal and Replacement of Solenoid

1) Unplug the unit from the electrical outlet.

2) Remove the panels.

3) Disconnect the connectors from the solenoid leads.

4) Remove the solenoid, and install a new solenoid.

5) Connect the connectors to the solenoid leads.

6) Replace the panels in their correct positions.

7) Plug the unit back in.

C. Removal and Replacement of Water Valve

1) Unplug the unit from the electrical outlet.

2) Close the water supply line shut-off valve.

3) Remove the panels.

4) Loosen the fitting nut. Be careful not to lose the washer.

5) Disconnect the terminals from the water valve.

6) Remove the screws attaching the valve bracket to the machine wall, then remove the
bracket and valve from the unit.

7) Remove the valve from the bracket.

8) Attach the short dispense hose and hose clamp to the new water valve (reuse the ones
from the previous valve or install new).

9) Install the new water valve, and replace the removed parts in the reverse order of which
they were removed. Make sure the washer is in place in the fitting nut.

10) Open the water supply line shut-off valve.

11) Plug the unit back in.

12) Check for leaks.

13) Replace the panels in their correct positions.

10

VI. Cleaning and Maintenance Instructions

IMPORTANT

Ensure all components, fasteners and thumbscrews are securely in place after
any maintenance or cleaning is done to the equipment.

A. Cleaning

WARNING

1. Hoshizaki recommends cleaning this unit at least once a year. More frequent
cleaning, however, may be required in some existing water conditions.

2. To promote safety, always unplug the unit from the electrical outlet before any
cleaning and maintenance procedures are started.

3. To prevent injury to individuals and damage to the dispenser, do not use
ammonia type cleaners.

4. Always wear liquid-proof gloves to prevent the cleaning and sanitizing
solutions from coming into contact with skin.

5. For safety and maximum effectiveness, use cleaning and sanitizing solutions
immediately after dilution.

1. Cleaning Procedure

1) Remove all ice from the ice dispensing bin.

2) Unplug the unit from the electrical outlet.

3) Remove the cover.

4) Remove the front panel. See Fig. 1.

5) Loosen the thumbscrews securing the apron panel and spout, then slide the spout out
from the front. Next, remove the thumbscrews and the apron panel.

6) Remove the snap pin securing the shutter assembly. Slide the shutter shaft to the left,
pull out the right side and slide out.

7) Dilute 5 fl. oz. (148 ml) of recommended cleaner Hoshizaki "Scale Away" or "LIME-A­WAY," (Economics Laboratory, Inc.) with 1 gallon (3.8 l) of warm water.

8) Scrub the cover, spout, apron panel, shutter assembly, agitator, and the inside of the bin
using a nylon scouring pad, brushes and cleaning solution.

9) Rinse all parts from step 8 thoroughly with water.

2. Sanitizing Procedure - Following Cleaning Procedure

1) Dilute approximately 0.5 fl. oz. (15 ml or 1 tbs) of a 5.25% sodium hypochlorite solution
(chlorine bleach) with 1 gallon (3.8 l) of warm water.

2) Soak the removed parts from step 8 above in a clean container containing the sanitizing
solution. After allowing the parts to soak for 10 minutes, wash them with the solution.
Also wash the bin and agitator with the solution.

3) Rinse all parts from step 2 thoroughly with water.

4) Reassemble the removed parts in the reverse order of removal.

5) Plug the unit back in and check for proper operation.

11

Front Panel

Screw

Spout

Cover

Bin

Snap
Pin

Agitator

Shutter
Assembly

Apron Panel

Thumbscrew

Fig. 1

12

B. Maintenance – Exterior Panels

To prevent corrosion, wipe the exterior occasionally with a clean and soft cloth. Use a
damp cloth containing a neutral cleaner to wipe off oil or dirt build up.

C. Preparing the Dispenser for Long Storage

CAUTION

When shutting off the dispenser for an extended time, drain out all water from
the water line and remove the ice from the dispensing bin. The bin should be
cleaned and dried. Drain the water supply line using air or carbon dioxide to
prevent damage to the line at sub-freezing temperatures.

When the dispenser is not used for two or three days, it is sufficient to only remove the ice
from the ice dispensing bin and unplug the unit, unless the dispenser will be at sub-freezing
temperatures.

1) Close the water supply line shut-off valve and open the water supply line drain valve.

2) Allow the line to drain by gravity.

3) Attach compressed air or carbon dioxide supply to the water supply line drain valve.

4) Blow the water supply line out using compressed air or carbon dioxide.

5) While pressing the water dispense switch, blow compressed air or carbon dioxide
through the water valve.

6) Close the water supply line drain valve.

7) Remove all ice from the ice dispensing bin.

8) Unplug the unit from the electrical outlet.

9) Clean and dry the dispensing bin.

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