Scotsman HID312 Manuel de service
Service Manual for
Meridian Ice Maker-Dispensers Models
HID312, HID525 and HID540
HID312, HID525, HID540
Service Manual
Introduction
The ice maker-dispensers covered in this manual
were designed by to be the nest on the market. Their
design is a result of Scotsman’s long experience in ice
maker-dispensers.
HID312 is 16 inches wide and air cooled only.
HID525 is 21 inches wide and 34.9 inches tall. it is
available as an air cooled or water cooled model.
Contents
Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
HID312 Cabinet Drawing
HID525 Cabinet Drawing
HID540 Cabinet Drawing
Placement
Counter Installations
Differences Between Models
Component Location
Installation
Start Up
Operation: Ice and Water Vending
Controller
Controller Functions
Maintenance and Cleaning
Air lter
Maintenance and Cleaning - Dispensing Bin Components
Ice level controls
Dispensing Bin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Ice Making and Ice Dispensing System Cleaning Instructions
Other Maintenance
Basic Troubleshooting
Troubleshooting
Controller Diagnostics
Test Procedures
Test Procedures
Test Procedures - Refrigeration
Test Procedures Auger and Gear Reducer
Dispensing Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Photo Eye - Bin Control
Gear Reducer
Auger
Evaporator
Water Seal and Auger Bearings
HID312 Wiring Diagram
HID312 Schematic Diagram
HID525 or 540 Wiring Diagram
HID525 or 540 Schematic Diagram
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
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HID540 is also 21 inches wide, but it is 40.9 inches
tall. it is also available either air or water cooled.
Observe any caution or warning notices. They are
important and provide notice of potential hazards.
Keep this manual for future reference.
. . . . . . . . . . . . . . . . . . . . 18
. . . . . . . . . . . . . . . . . . 21
April 2015
Page 2
HID312, HID525, HID540
Service Manual
Specications
The ice maker-dispenser is designed to be installed
indoors, in a controlled environment. Although
it can operate in a wide range of air and water
temperatures, it will provide the best performance if
not subject to extremes.
Air Temperature Limitations
• Maximum: 100
• Minimum: 50
o
F. or 38oC.
o
F. or 10oC.
Water Temperature Limitations
• Maximum: 100
• Minimum: 40
o
F. or 38oC.
o
F. or 4.4oC.
Water Pressure, potable
• Maximum: 80 PSI or 5.5 Bar
• Minimum: 20 PSI or 1.3 Bar
Water Pressure, condenser inlet
• Maximum: 145 PSI or 10 Bar
• Minimum: 20 PSI or 1.3 bar; can be as low as 5
PSI or .3 Bar if clean & supplied with 45oF. water)
Condenser GPM
o
• 70
F. water: .25 or .95 LPM
o
• 50
F. water: .15 or .57 LPM
Water Conductivity:
• Minimum: 10 microSiemens/cm
RO water may be supplied to the potable water
system, but if it has less than the above conductivity,
the water level sensor will not detect water and the
unit will not make ice.
Deionized water will not work and isn’t recommended.
Voltage - 60 Hz
• Maximum: 126 Minimum: 104
Operating the machine outside of any of the above
limitations is considered abuse and any resulting
damage is not covered by warranty and could cause a
complete loss of warranty coverage.
Warranty Information
The warranty statement for this product is provided
separately from this manual. Refer to it for applicable
coverage. In general warranty covers defects
in material or workmanship. It does not cover
maintenance, corrections to installations, or situations
when the machine is operated in circumstances that
exceed the limitations printed above.
Product Information
The product is an ice maker-dispenser. It is designed
to be installed on a countertop or on a specic
machine stand.
• All models require a drain. An internal drain basin
separates the ice storage bin’s drain from the drip tray
drain.
• A backow preventer may be required by local
plumbing codes.
• 60 Hz model has a 7.5 ft. power cord with NEMA
5-15P plug.
• Air cooled models ow air left to right and include
a cleanable air lter.
• 4” or 10 cm legs are optional for counter models.
Thread size 3/8 - 16.
• Special models are required for wall mounting.
• Ice or water vending is triggered by touch free
sensors, no other activation method is available.
• For available options and kits, see sales literature.
Scotsman Ice Systems are designed and
manufactured with the highest regard for safety and
performance.
Scotsman assumes no liability or responsibility of
any kind for products manufactured by Scotsman
that have been altered in any way, including the use
of any part and/or other components not specically
approved by Scotsman.
Scotsman reserves the right to make design changes
and/or improvements at any time. Specications and
design are subject to change without notice.
April 2015
Page 3
HID312, HID525, HID540
Service Manual
HID312 Cabinet Drawing
3
1.17
3/8" FLARE
WATER INLET
4.6
3/4" FPT
DRAIN
1.80
8.3
3.25
BACK VIEW
POWER
CORD
9.7
3.80
CHASE
UTILITY
5.1
2.01
CHASE
UTILITY
61.9
41.3
24.38
16.25
88.6
34.88
27.9
AIR FLOW
11.00
10.2
4.00
36.8
14.50
RIGHT SIDE VIEW
7.7
3.02
0.3
.12
WATER CHUTE
34.6
13.62
41.5
59.7
16.36
23.50
FRONT VIEW
April 2015
Page 4
AIR FLOW
AIR FILTER
REMOVABLE
ICE CHUTE
10.2
4.00
ADJUSTABLE
OPTION LEGS
HID312, HID525, HID540
Service Manual
HID525 Cabinet Drawing
1/2 FPT
CONDENSER
DRAIN
(WC ONLY)
4.6
1.80
3/8 FPT
CONDENSER
WATER INLET
(WC ONLY)
3/8" FLARE
WATER INLET
BACK VIEW
18.9
12.5
4.94
7.45
3/4" FPT
DRAIN
5.1
17.8
2.00
7.00
61.9
24.38
88.6
34.88
AIR FLOW
27.9
11.00
3
9.7
3.80
CHASE
UTILITY
7.7
3.02
5.1
2.01
0.3
1.17
CHASE
UTILITY
.12
10.2
36.8
POWER
4.00
14.50
CORD
59.7
23.50
RIGHT SIDE VIEW
47.3
18.62
54
21.25
54.2
21.36
FRONT VIEW
WATER CHUTE
10.2
4.00
ADJUSTABLE
OPTION LEGS
AIR FLOW
ICE CHUTE
REMOVABLE
AIR FILTER
April 2015
Page 5
HID312, HID525, HID540
Service Manual
HID540 Cabinet Drawing
1/2 FPT
CONDENSER
DRAIN
9.7
(WC ONLY)
3.80
CHASE
UTILITY
4.6
1.80
3/8" FLARE
WATER INLET
(WC ONLY)
18.9
7.45
4.94
WATER INLET
5.1
3/8 FPT
2.00
12.5
CONDENSER
BACK VIEW
17.8
7.00
3/4" FPT
DRAIN
3
1.17
POWER
CORD
5.1
2.01
54
61.9
24.38
21.25
103.8
40.88
27.9
AIR FLOWAIR FLOW
11.00
10.2
4.00
36.8
14.50
59.7
23.50
RIGHT SIDE VIEW
7.7
3.02
0.3
.12
54.2
21.36
47.3
18.62
FRONT VIEW
April 2015
Page 6
REMOVABLE
AIR FILTER
ICE CHUTE
10.2
4.00
ADJUSTABLE
OPTION LEGS
HID312, HID525, HID540
Service Manual
Placement
The location of the equipment should be selected
with care. Consideration should be given to allow
adequate space on the sides for air cooled models to
breathe.
Minimum clearances for air cooled models:
• 6 inches or 15 cm at each side
• 2 inches or 5 cm above, 10” or 25 cm more to
allow auger removal when ceiling is xed.
• 6 inches or 15 cm at the back.
Air cooled models ow air left to right. More space
than the minimum at the sides will maximize
performance.
Cafeteria applications.
The unit can be placed in a cafeteria line for ice and
water. As some users sometimes dispense too much
ice, high volume use may require the drip tray to be
occasionally cleared of spilled ice.
Airow Direction
The power outlet should be located within the length
of the supplied power cord. If placed on a counter,
the counter must be strong enough to support the
weight of the unit. Space above the cabinet should be
allowed for service and maintenance. If legs will be
used, allow space for the total cabinet height.
Air cooled models in a small room will require
ventilation to exhaust the heat they produce. They
also produce some added noise from the fan.
Noise sensitive areas should consider water cooled
equipment or the machine located where the noise
from ice making is not objectionable.
Nearby infrared emitters or a window that allows
sunlight to shine on a dispensing sensor may cause
the unit to dispense ice or water without a container to
trigger it.
April 2015
Page 7
HID312, HID525, HID540
Service Manual
Counter Installations
Units placed on a counter must either use legs or be
sealed to the counter top with food grade sealant per
local codes. To avoid disturbing the seal, complete the
installation prior to sealing.
Note: Seal
Chassis to
Counter, do NOT
Seal Drip Tray
Legs
Panel Removal
Remove one screw at bottom front of upper front
panel, swing bottom of panel forward and lift off the
unit.
4” legs are optional for countertop applications. They
are not to be used on the HID dispenser when it is
placed on a machine stand.
Note: Use
only legs of 4”
minimum height.
Set Up
The drip tray and cup rest are shipped in place, there
is no need to attach or remove them. It is a good idea
to remove the front panels and inspect for any loose
or rubbing parts prior to installation.
Twist ice and
water chutes
counterclockwise and
pull down to remove.
Remove four screws
from sides of lower
front panel, pull forward
slightly and rest it
on the drip tray. If
needed, unplug sensor
connector and separate
panel from unit.
Pre-Start Inspection
Level the cabinet front to back and left to right.
Conrm there are no loose or rubbing parts.
Return splash panel and chutes to unit.
April 2015
Page 8
HID312, HID525, HID540
Service Manual
Differences Between Models
Model Electrical Condenser Cabinet Type Width
in / cm
HID312A-1A 115/60/1 Air Counter 16 / 41.3 35 / 88.6 R-134a / 11 oz
HID525A-1A 115/60/1 Air Counter 21 / 54 35 / 88.6 R-404A / 12 oz
HID525W-1A 115/60/1 Water Counter 21 / 54 35 / 88.6 R-404A / 11 oz
HID540A-1A 115/60/1 Air Counter 21 / 54 41 / 103.8 R-404A / 12 oz
HID540W-1A 115/60/1 Water Counter 21 / 54 41 / 103.8 R-404A / 11 oz
HID312AW-1A 115/60/1 Air Wall Mount 16 / 41.3 35 / 88.6 R-134a / 11 oz
HID525AW-1A 115/60/1 Air Wall Mount 21 / 54 35 / 88.6 R-404A / 12 oz
HID540AW-1A 115/60/1 Air Wall Mount 21 / 54 41 / 103.8 R-404A / 12 oz
HID312A-6A 230/50/1 Air Counter 16 / 41.3 35 / 88.6 R-134a /
HID525A-6A 230/50/1 Air Counter 21 / 54 35 / 88.6 R-404A /
Model Electrical Condenser Typical Watts Auger Motor
Amps
HID312A-1A 115/60/1 Air 415 - 420 1.1 - 1.3 4.1 - 4.3 Embraco
HID525A-1A 115/60/1 Air 816 - 825 1.1 - 1.5 5.7 - 5.9 Copeland
HID525W-1A 115/60/1 Water 1.1 - 1.5 5.7 - 5.9 Copeland
HID540A-1A 115/60/1 Air 816 - 825 1.1 - 1.5 5.7 - 5.9 Copeland
HID540W-1A 115/60/1 Water 1.1 - 1.5 5.7 - 5.9 Copeland
HID312AW-1A 115/60/1 Air 415 - 420 1.1 - 1.3 4.1 - 4.3 Embraco
HID525AW-1A 115/60/1 Air 816 - 825 1.1 - 1.5 5.7 - 5.9 Copeland
HID540AW-1A 115/60/1 Air 816 - 825 1.1 - 1.5 5.7 - 5.9 Copeland
HID312A-6A 230/50/1 Air Embraco
HID525A-6A 230/50/1 Air Copeland
Height
in / cm
Compressor
Amps
Refrigerant / Charge
Compressor
Brand /
Model
Model Electrical Condenser Suction
Pressure
(PSIG)
HID312A-1A 115/60/1 Air 6 - 8 7 - 10 102 - 109 138 - 145
HID525A-1A 115/60/1 Air 30 - 34 11 - 15 230 - 235 300 - 310
HID525W-1A 115/60/1 Water 30 - 34 245 - 250 245 - 250
HID540A-1A 115/60/1 Air 30 - 34 14 - 15 230 - 235 300 - 310
HID540W-1A 115/60/1 Water 245 - 250 245 - 250
HID312AW-1A 115/60/1 Air 6 - 8 7 - 10 102 - 109 138 - 145
HID525AW-1A 115/60/1 Air
HID540AW-1A 115/60/1 Air
HID312A-6A 230/50/1 Air
HID525A-6A 230/50/1 Air
April 2015
Page 9
Superheat
(Degrees F.)
70/50 Discharge
Pressure (PSIG)
90/70 Discharge
Pressure (PSIG)
HID312, HID525, HID540
Service Manual
Component Location
Agitator,
Dispense Bar,
Dispense
Rotor
Photo-Electric Eye Ice
Level Sensors
Ice Making
System
Water
Reservoir
Compressor
Control Box
Condenser
Ice Dispense
Sensor
Drain Basin
and Manifold
Drip Tray
Electronic
Controller
Compressor
Water Dispense
Sensor
April 2015
Page 10
HID312, HID525, HID540
Service Manual
Installation
Installation should be done by an experienced ice
machine installer. To locate one, call the number on
the back of this manual or go to Scotsman’s website
www.scotsman-ice.com to identify a local distributor or
service company.
The machine will require power, water and drain.
Locate the water supply tting on the lower back of
the cabinet and obtain the correct tting to connect
the water supply.
Plumbing Fittings:
• Potable water inlet: 3/8 male are.
• Cabinet drain: 3/4 FPT.
• Water cooled condenser inlet: 3/8 FPT.
• Water cooled condenser drain: 1/2 FPT
material to meet local codes. The drain basin in the
machine will act as an internal vent, no additional
vent should be required unless there is a very long
horizontal run. Drain tubing must pitch down 1/4 inch
per foot to the building drain. Insulation of drain tubing
is recommended for most environments.
Water cooled models:
Connect water or coolant supply (if using recirculating
system) to the condenser inlet.
Connect drain (or return if a recirculating system) to
the condenser drain. Use only rigid tubing. Do not
vent this drain tube.
Condenser
Inlet
Drain Tubing
Power
Cord
Potable Water
Connection
Air Cooled Utilities
All models:
Connect the potable water supply to the inlet
at the bottom back of the unit. 3/8” OD tubing
recommended. Water lters may be used but are not
required. Note that activated carbon or charcoal water
lters are used for taste and odor problems but also
take out any chlorine that the local water agency may
have added for purication. That can require more
frequent sanitization of the equipment.
Connect drain tubing to the central drain tting at the
back of the cabinet. Use 3/4 inch rigid tubing, use
Power
Cord
Condenser
Drain
Water Cooled Utilities
Electrical Supply - 115 volt models
Plug the unit into a dedicated 15 amp outlet. The unit
must be the only device on the circuit. Conrm the
outlet is properly grounded and is in good condition.
Worn outlets should be replaced as they can cause
erratic operation of equipment. Do not use an
extension cord. Do not cut off the ground plug on the
power cord.
Ground fault outlets are not recommended. If ground
fault is required a ground fault breaker should be
used.
Use the services of a licensed electrician when
needed and conform to local and national codes.
Position the unit in its nal location.
Level the unit front to back and left to right.
Seal to the countertop as required per local codes.
April 2015
Page 11
HID312, HID525, HID540
Service Manual
Start Up
1. Remove upper front panel
2. Open the water hand valve, observe that water
enters the water reservoir, lls and then shuts off.
Check for leaks. Repair any leaks before going
any further.
3. Switch electrical supply on. Lights on controller
will ash and then the power light will remain on.
The code display will show O.
4. Push and release the On/Off button. The machine
will start the ice making process. The code display
will show F. Air cooled models will discharge warm
air out the right side, water cooled models will
discharge warm (about 110
condenser drain.
5. In minutes ice will begin to fall into the dispensing
bin. Check ice dispensing by holding a container
in front of the Touch Free ice sensor (just below
the ice delivery spout). Ice should ow from the
spout when a container is present, and stop
dispensing when the container is removed.
6. Check water dispensing by holding a container in
front of the Touch Free water sensor. Water will
ow when a container is present and stop when it
is removed.
o
F.) water out of the
it with a locally approved sanitizer or a mixture of
1 ounce of household bleach to 2 gallons of water,
allow to air dry.
10. Reconnect electrical power.
11. Push the On/off button to switch the machine on.
12. Replace all covers and panels.
13. Give the owner/user the user manual, instruct
him/her in the operation and maintenance
requirements of the unit. Make sure they know
who to call for service.
14. Fill out the Customer Evaluation and Warranty
Registration form, and mail it in to Scotsman or
register the unit at Scotsman’s website (www.
scotsman-ice.com).
7. Push the On/Off button to switch the machine off.
8. Unplug or disconnect electrical power.
9. Remove the top panel and the top of the ice
storage bin. Scoop out any ice in the bin and
sanitize the interior of the ice storage bin by wiping
ON / OFF
April 2015
Page 12
HID312, HID525, HID540
Service Manual
Operation: Ice and Water Vending
During ice making soft ice is compressed thru a die
and then broken off into irregular lengths. It will not be
clear and, because of melting, when dispensed it will
not be uniform in size or shape.
Dispense
Sensors
Other notes:
• An occasional drip may be seen from the ice
dispense chute. This is normal and is from ice melting
inside the chute. A continuous stream of water from
the ice chute indicates a restricted bin drain.
• Clear containers (glass or plastic) may not always
activate the dispense sensors. Retry with an opaque
container.
• The drip tray is not a sink and cannot tolerate
garbage. Coffee and soda should not be discarded
into it. Debris like stirring straws that are discarded
into the drip tray will likely cause a drain back up and
need to be removed as soon as they are found.
• Both dispensing and ice making are disabled
when the unit is switched off at the controller.
Splash panel wipe-off. Wiping the splash panel could
result in unintended dispensing. To avoid that, a
disable button has been provided. It is recessed into
the bottom of the chute panel. Push and release it to
disable dispensing for 60 seconds.
Dispensing takes place when the Touch Free sensor’s
infrared beam bounces back to the sensor from a
container placed directly in front of it.
If the container is in front of the Touch Free sensor
on the left side, the ice dispensing rotor will rotate
and sweep ice over the ice dispensing chute. Ice will
continue to discharge out this chute as long as the
rotor is turning. It stops when the rotor stops.
If the user does not remove the container, ice will be
dispensed for 24 seconds and then stop.
If the container is in front of the Touch Free sensor on
the right side, the inlet water valve will open and water
will ow into the container.
If the user does not remove the container water will be
dispensed for 20 seconds and then stop.
Note: Water may dispense cloudy and then clear up in
the glass. That is normal due to air in the water and is
not an indicator of any malfunction.
Vending Disable
Switch
Noise
This is a commercial ice machine. It contains a
powerful compressor, heavy duty gear reducer and, if
air cooled, a fan that moves a lot of air. It will produce
some noise when it is making ice. Every effort was
made during its design to minimize the sound level
but some is unavoidable.
April 2015
Page 13
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