Hoshizaki DCM-751BAH-OS Service manual

Cleaning Prep:
Close the water supply line shut-off valve,
move the dispense mode switch to
CONTINUOUS and dispense all the ice
from the internal storage bin.
Move the control switch to OFF, pause momentarily, then
move the control switch to DRAIN*. Allow the icemaker to
drain for 5 minutes.
A momentary pause is necessary to de-energize the control board, otherwise there is a
delay of several minutes before the drain valve will open.
*If left on DRAIN for 10 minutes or more a 2-beep alarm will sound every 5 seconds.
Move the switch out of DRAIN to clear the alarm.
Move the control switch to OFF. Remove the Front Panel
and Top Panel. Move the power switch to OFF.
Cleaning:
Dilute Hoshizaki Scale Away with warm water (see Table below).
Remove the Storage Bin Cover†, Spout B, then
Spout A. Pour cleaning solution into the Extruding
Head until the Evaporator Assembly and the
Reservoir are full and the solution overflows into the Drain Pan.
Replace Spout A & B, and the Storage Bin Cover.
Allow the icemaker to soak for 10 minutes.
†Use a 15mm socket to easily remove thumb screws.
In bad water conditions, a more thorough cleaning may be
required. Remove the Float Switch from the Reservoir cover.
Clean the Float Switch with the solution, rinse thoroughly with
clean water, and replace it back in the cover. In addition to
following Step ❹, place a clamp on the Reservoir hose that will
block the flow to the evaporator assembly. Pour additional
cleaning solution over the Extruding Head until the Evaporator
Assembly is full. Allow to soak, remove the clamp before
operation. Otherwise, continue to Step ❻.
DCM-751
Scale Away
9.6 fl. oz (0.29 l)
Warm Water
1.6 gal. (6.0 l)
Sanitizing:
•Dilute 5.25% chlorine
bleach‡with warm water
(see Table below)
DCM-751
Bleach
0.82 fl. oz (25 ml)
Warm Water
1.6 gal. (6.0 l)
‡Use bleach without additives.
•Remove the storage bin
cover, spout B, then spout A
•Pour the sanitizing solution
over the extruding head until
solution starts to overflow
into the drain pan
•Clean, rinse, and replace
spout A, spout B, and the
storage bin cover
•Allow the icemaker to soak
for 10 minutes
•Move power switch to ON,
replace the panels
•Move the control switch to
ICE
•Make ice with the solution until
it stops, dispose of ice
•Move the control switch to
OFF, pause momentarily,
then move it to DRAIN
•Allow the icemaker to drain for
5 minutes
Ice Machine
DCM-751BAH(-OS)
DCM-751BWH(-OS)
Cleaning & Sanitizing
AMMONIA
Cleaners
The icemaker/dispenser must be cleaned & sanitized at least twice a year.
ATTENTION!
Do not leave icemaker
unattended when panels are off
Tech Support: 1.800.233.1940
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#51052 | 02.21.2018
Page 1
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To Icemaker
Or Water Filter
SHUT OFF
REMOVE ICE
CLEAN
Wait
continued on the back…
Pour Solution into
Extruding Head
Power Switch
Top
Front of
icemaker
Float Switch
Assembly
Evaporator
Assembly
Button models
Right Side
Control Switch
Dispense
Mode Switch
12
13
14
15

Move the power switch to ON. Replace the Top Panel
and Front Panel§. Move the control switch to ICE.
Make ice using the cleaning solution until it stops.
§This unit will not run until the safety switch is engaged.
Move the control switch to OFF, pause momentarily,
then move the control switch to DRAIN. Allow the
icemaker to drain for 5 minutes.
Move the control switch to OFF, pause
momentarily, then move the control
switch to ICE. Open the water supply line
shut-off valve to supply water to the
icemaker.
After the gear motor starts, move the control
switch to OFF, pause momentarily, then move the
control switch to DRAIN. Allow the icemaker to
drain for 5 minutes.
Move the control switch to OFF. Move the power switch to OFF.
Close the icemaker water
supply line shut-off valve.
Dilute Hoshizaki Scale Away with warm water (see
Table). Move the control switch to OFF.
Remove the Front Panel and Top Panel, move the power
switch to OFF.
Remove the Storage Bin Cover**, Bin Control
Assembly (snap pin, shaft, and actuator), Spout
B, Spout A, Spout Gaskets, Spout Cover, Ice
Dispensing Spout**, and then the Water
Dispensing Nozzle. Place in bin with cleaning
solution.
Remove Motor Bracket Thumbscrews** first
from the vertical plane and then from horizontal plane. One hand
should hold the agitator or dispensing auger, while the other hand
pulls the corresponding Agitating Motor or Dispensing Motor out
the front of the icemaker. Now remove the Agitator and Dispensing
Auger from the ice storage bin and place them in the bin with
cleaning solution. **Use a 15mm socket to easily remove thumb screws.
Soak the parts removed in Steps 23 –24 (except the motors) in
cleaning solution for 15 minutes. Rinse thoroughly with clean water.
Wipe the exterior of optical-sensors or push buttons with the cleaning solution and then a
clean damp cloth. Wipe the ice shutter (located above the ice dispensing spout) thoroughly
with a clean cloth.
●
Air Filter
●
Water Filters
●
Exterior
●
Pan/Gear Drain
● Icemaker/Dispenser
● Water Supply Inlet
●
Extruding Head
●
Water Hoses
Dish soap, rinse well
Check psi, change if req’d
Dish soap & damp cloth
Clear w/ warm water + brush
Follow these instructions
Clean inlet screen/valves
Inspect seal bolts/ bearing
wear. Tighten or replace
Inspect. Replace if req’d
●●●
Tech Support: 1.800.233.1940
Page 2
#51052 | 02.21.2018
 sanitizing continued…
•Move the control switch to
OFF, pause momentarily, then
move it to ICE
•Open the icemaker water
supply line shut-off valve
•After the gear motor starts,
move control switch to OFF,
pause momentarily, then move
it to DRAIN
•Allow the icemaker to drain for
5 minutes
•Move control switch to ICE
•Allow the icemaker to run for
30 minutes, then clean and
sanitize the dispensing
components –Step
DOWNLOAD COMPLETE
INSTRUCTION MANUAL:
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Type in the model number of your
icemaker (including dashes) to
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ATTENTION!
DO NOT use ammonia
type cleaners. Can
cause damage to
icemaker
WEAR liquid-proof
gloves and goggles to
protect skin & eyes
from cleaning &
sanitizing chemicals
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AMMONIA
Cleaners
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21
Need Service or Repair? Locate your closest Hoshizaki Certified Service Tech: hoshizakiamerica.com/locate-service-rep
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Make ice
with
solution
until
machine
stops
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30
Wait
To Icemaker
Or Water Filter
OPEN
Listen for
Gear Motor
to Start
To Icemaker
Or Water Filter
SHUT OFF
Clean Dispenser Components:
22
23
24
DCM-751
Scale Away
9.6 fl. oz (0.29 l)
Warm Water
1.6 gal. (6.0 l)
Motor Bracket Thumbscrews
Agitating
Motor
Sanitize Dispenser Components:
•Dilute 5.25% chlorine bleach‡
with warm water and place it in
another bin (see Table below)
DCM-751
Bleach
0.82 fl. oz (25 ml)
Warm Water
1.6 gal. (6.0 l)
‡Use bleach without additives.
•Soak the parts removed in
Steps 23–24 (except the
motors) in sanitizing solution for
15 minutes. Rinse all the parts
thoroughly with clean water
•Reassemble and replace all
parts removed in Steps 23-24
(except storage bin cover)
•Pour warm water into the
storage bin to melt any
remaining ice
•Clean the storage bin liner and
cover with dish soap and a damp
cloth. Rinse thoroughly with clean
water
•Replace the storage bin cover
•Move the power switch to ON,
then replace top and front
panels.
•Move control switch to ICE, to
start the automatic icemaking
process
•Set dispense mode switch to
preference (portion or
continuous)
Dispensing
Motor
Ice
Shutter
Continue to
Sanitation –
Step on
front…
12
25
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27
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29
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31
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33
Continue to Sanitation –Step to right…
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The icemaker might make a noise/squealing when first started due to scale removal from
auger/evaporator. This is normal in bad water conditions and will subside after 20 minutes.
Wait
9
Wait