The Taco Bell CM-100 Cheese Melter produces
steam to quickly heat and melt cheese for a
variety of products. Simple push-button action
delivers a single-shot of super-heated steam.
Because the amount of steam is always consistent, this unit removes the guesswork and
produces a uniform finished product from one
operator to another.
This manual provides the safety, installation,
and operating procedures for the Cheese
Melter. We recommend that all information
contained in this manual be read prior to
installing and operating the unit.
Your Cheese Melter is manufactured from the
finest materials available and is assembled
to Roundup’s strict quality standards. This
unit has been tested at the factory to ensure
dependable trouble-free operation.
SERVICE/TECHNICAL
ASSISTANCE
If you experience any problems with the
installation or operation of your unit, contact
your local Roundup Authorized Service Agency.
Fill in the information below and have it
handy when calling your Authorized Service
Agency for assistance. The serial number is on
the specification plate located on the rear of
the unit.
Purchased From
Date of Purchase
IMPORTANT
A.J. Antunes & Co. reserves the right
to change specifications and product
design without notice. Such revisions do
not entitle the buyer to corresponding
changes, improvements, additions or
replacements for previously purchased
equipment.
IMPORTANT
Keep these instructions for future reference. If the unit changes ownership,
be sure this manual accompanies the
equipment.
WARRANTY INFORMATION
Please read the full text of the Limited
Warranty in this manual.
If the unit arrives damaged, contact the carrier immediately and file a damage claim with
them. Save all packing materials when filing a
claim. Freight damage claims are the responsibility of the purchaser and are not covered
under warranty.
The warranty does not extend to:
• Damages caused in shipment or damage as result of improper use.
• Installation of electrical service.
• Normal maintenance as outlined in
this manual.
• Malfunction resulting from improper
maintenance.
• Damage caused by abuse or careless
handling.
• Damage from moisture into electrical
components.
• Damage from tampering with, removal
of, or changing any preset control or
safety device.
Model Number
Serial Number
Manufacturing Number
Use only genuine Roundup replacement parts
in this unit. Use of replacement parts other
than those supplied by the manufacturer will
void the warranty. Your Authorized Service
Agency has been factory trained and has a
complete supply of parts for this unit.
Visit www.ajantunes.com or contact the factory at 1-630-784-1000 to locate your nearest
Authorized Service Agency.
Refer to the service agency directory packaged
with your manual and fill in the information
below.
Authorized Service Agency
Name
Phone Number
Address
2
P/N 1011175 Rev. A 01/12
IMPORTANT SAFETY
INFORMATION
Use the following guidelines for safe operation of the unit.
• Read all instructions before using
equipment.
• For your safety, the equipment is furnished with a properly grounded cord
connector. Do not attempt to defeat
the grounded connector.
• Install or locate the equipment only
for its intended use as described in
this manual. Do not use corrosive
chemicals in this equipment.
• Do not operate this equipment if it
has a damaged cord or plug, if it is
not working properly, or if it has been
damaged or dropped.
• This equipment should be serviced by
qualified personnel only. Contact your
nearest Authorized Service Agency for
adjustment or repair.
• Do not block or cover any openings on
the unit.
• Do not immerse cord or plug in water.
• Keep cord away from heated surfaces.
• Do not allow cord to hang over edge
of table or counter.
• Turn the power off, unplug the power
cord, and allow unit to cool down
before performing any service or
maintenance on the unit.
• The procedures in this manual may
include the use of chemical products.
These chemical products will be
highlighted with bold face letters followed by the abbreviated HCS (Hazard
Communication Standard). See Hazard
Communication Standard manual for
the appropriated Material Safety Data
Sheets (MSDS).
• The equipment should be grounded
according to local electrical codes to
prevent the possibility of electrical
shock. It requires a grounded receptacle with separate electrical lines,
protected by fuses or circuit breaker of
the proper rating.
• All electrical connections must be in
accordance with local electrical codes
and any other applicable codes.
• Do not clean this appliance with a
water jet.
WARNINGS
Be advised of the following warnings when
operating and performing maintenance on
this unit.
• If the supply cord is damaged, it must
be replaced by an authorized service
agent or a similarly qualified person in
order to avoid a hazard.
• Do not modify the power supply cord
plug. If it does not fit the outlet, have
a proper outlet installed by a qualified
electrician.
• Do not use an extension cord with this
appliance.
• Electrical ground is required on this
appliance.
• Check with a qualified electrician if
you are in doubt as to whether the
appliance is properly grounded.
• If a chemical cleaner is used, be sure
it is safe to use on cast aluminum.
Observe all precautions and warnings
on product label.
• Inspection, testing, and repair of electrical equipment should only be performed by qualified service personnel.
• This equipment is to be installed to
comply with the basic plumbing code
of the Building Officials and Code
Administrators, Inc. (BOCA) and the
Food Service Sanitation Manual of the
Food and Drug Administration (FDA).
• Water pressure must not exceed 25
psi (1.7 kg/cm2 or 172 kPa). Higher
water pressures may cause poor performance or flooding. To reduce water
pressure, install a water pressure regulator and set water pressure to 20–25
psi (1.4–1.7 kg/cm2 or 138–172 kPa).
To order a water pressure regulator
from our Authorized Service Agency,
order P/N 7000314 for one unit or P/N
7000235 for two units.
• To ensure proper steaming characteristics, some calcium/mineral deposits
must be present on the generator
surface. If during cleaning, the surface
does become free of calcium/mineral
deposits, mix one cup tap water with
2 tablespoons of baking soda and
slowly pour 1/4 cup of the solution
onto the generator surface. This may
have to be repeated several times to
ensure proper steaming characteristics
by creating a thin layer of deposits on
the surface. See the Maintenance section of this manual.
• Do not use a sanitizing solution or
abrasive materials. The use of these
may cause damage to the stainless
steel finish.
• Chlorides or phosphates in cleaning agents (e.g. bleach, sanitizers,
degreasers or detergents) could cause
permanent damage to stainless steel
equipment. The damage is usually in
the form of discoloration, dulling of
metal surface finish, pits, voids, holes,
or cracks. This damage is permanent
and not covered by warranty.
• The following tips are recommended
for maintenance of your stainless steel
equipment:
• Always use soft, damp cloth for
cleaning, rinse with clear water
and wipe dry. When required,
always rub in direction of metal
polish lines.
1. Remove unit and all packing materials
from the shipping carton.
2. The unit should come with the items
listed below:
• Owner’s Manual
• Authorized Service Agency Directory
• Handle and Handle Guard
• Water Quick Disconnect Kit
NOTE: If any parts are missing or damaged, contact Antunes Technical Service
IMMEDIATELY at 1-877-392-7854 or
1-630-784-1000.
3. Remove all packing materials and
protective coverings from the unit.
4. Remove and wash the Spatula and
Liner (Figure 1) in soap and water
by hand. Rinse with clean water and
allow to air dry.
NOTE: Do NOT wash in a power washer.
5. Wipe all surfaces of the unit with a
hot damp cloth.
NOTE: Do NOT use a dripping wet cloth.
Wring out before use.
6. Assemble the Handle and Handle
Guard to the Spatula (Figure 1).
7. Re-install the Spatula.
Handle
Guard
Handle
When placing the Cheese Melter into service,
pay attention to the following guidelines.
• Make sure the power switch is off and
the unit is at room temperature before
plugging in the power cord.
• Do not block or cover any openings on
the unit.
• Do not immerse the power cord or
plug in water.
• Keep the power cord away from
heated surfaces.
• Do not allow the power cord to hang
over edge of table or counter.
Plug the power cord into the appropriate
power outlet. Refer to the specification
plate for the proper voltage.
1. Place the unit on a sturdy, level table
or other work surface..
2. Turn off the power.
3. Ensure the line voltage corresponds to
the stated voltage on the specification
label and power cord warning tag.
4. Connect the unit to the power supply.
USE R.O. WATER SUPPLY ONLY
PLUMBING
The CM-100 requires installation of a reverse
osmosis filtration system for supplying water
to this equipment. To purchase the filtration
system, contact the approved equipment
distributor.
Flexible water line (not supplied) for water
hookup should be 1/4" (6.5 mm) I.D to fit the
quick disconnect (supplied).
NOTE: It is recommended to install an
in-line water strainer (P/N 7000333) to
prevent debris from entering the solenoid
valve. Debris in the solenoid valve will
cause a leaking condition that is not
covered by warranty.
1. Connect the Flexible Tubing to the
Quick Disconnect Insert using the supplied hose clamp.
2. Push the Quick Disconnect Insert into
the female fitting on the back of the
unit until it clicks.
CAUTION
Water pressure must not exceed 25 psi (1.7
kg/cm2 or 172 kPa). Higher water pressures
may cause poor performance or flooding.
To reduce water pressure, install a water
pressure regulator, and set water pressure to
20–25 psi (1.4–1.7 kg/cm2 or 138–172 kPa).
P/N 1011175 Rev. A 01/12
CAUTION
Connect this unit to a cold water supply line
only. Connecting this unit to a hot water
supply line will void the warranty.
5
POWER
USE R.O. WATER SUPPLY ONLY
CYCLE
START
READY
STEAMING
CYCLE
START
Figure 3. Operating Controls
OPERATING INSTRUCTIONS
1. Turn the power on and allow the unit
to preheat for approximately 20–30
minutes.
NOTE: The green Ready Light will flash
during warm-up. The flashing light will
become steady when the unit is up to
temperature. If the Ready Light continues
to flash after warmup, or starts to flash
during operation, see the Troubleshooting
section in this manual.
NOTE: Do NOT push the CYCLE/START button during warmup. The flashing green
Ready Light indicates the unit is not up to
temperature. If the CYCLE/START button is
pressed while the green light is flashing,
nothing will happen.
2. Pull out the Spatula and place the
product to be steamed onto the
Spatula.
3. Push the Spatula fully into the unit.
NOTE: Spatula must be fully inserted in
order to start a steam cycle.
Reset
Button
Reset Cap
Figure 4. Hi-Limit Thermostat
4. Press and release the CYCLE/START
button. The green Ready Light will turn
off and the yellow Steaming Light will
come on and remain lit for the entire
steaming cycle.
5. At the end of the steaming cycle
(approximately 7 seconds), an audible
signal will sound until the spatula is
removed from the unit and the green
Ready Light will turn back on, indicating the product is ready to be served.
6. Carefully remove the steamed product
and insert the Spatula back into the
unit.
WARNING
To avoid injury, be careful when removing the
Spatula. Be sure to allow steam to escape
before putting hands or face over the
steamer.
USE R.O. WATER SUPPLY ONLY
HI-LIMIT THERMOSTAT
A hi-limit thermostat will turn off electrical
power to the Generator and transformer circuits if the unit overheats. To reset the Hi-Limit
Thermostat, allow the unit to cool down
(approximately 45 minutes). Then remove the
cap located on the bottom of the unit (Figure
4) and press the reset button.
If the unit continues to shut off due to overheating, contact your Roundup Authorized
Service Agency.
6
P/N 1011175 Rev. A 01/12
CAUTION
Do not use a sanitizing solution or abrasive
materials. The use of these may cause damage to the stainless steel finish.
Chimney
CAUTION
If a chemical cleaner is used, be sure it is
safe to use on cast aluminum. Observe all
precautions and warnings on product label.
CAUTION
Turn the power off, unplug the power cord,
and allow the unit to cool before performing
any service or maintenance.
DAILY CLEANING
NOTE: Frequency of cleaning is determined by water conditions, usage, and
water filter systems.
1. Turn the power off, unplug the power
cord, and allow the unit to cool down.
2. Check the Water Quick Disconnect
Fitting and all hose clamp connections
for leakage. If leakage is apparent,
tighten all clamps or replace part if
required.
3. Remove the Top Cover, Spatula, and
Liner (Figure 6).
4. Remove Chimney (Figure 6)from rear
of unit by sliding upward and away
from the unit.
5. Clean the Top Cover, Spatula, Liner, and
Chimney in hot, soapy water by hand.
Rinse in clear water and wipe dry.
NOTE: Do NOT wash in a power washer.
6. Clean the chamber of any product
spills.
7. Clean entire unit with a clean, hot,
damp cloth (not dripping wet) and
wipe dry.
8. Re-install Chimney, Liner, Spatula, and
Top Cover.
9. Plug in the power cord and test the
unit before returning it to service.
Wing Nut
Generator
Cover
Diffuser
Steam Ports
Figure 6. CM-100 Components
MONTHLY CLEANING
This unit utilizes an open steam generator.
Water sprayed onto the Generator surface
flashes into steam immediately, but the minerals in the water do not steam; they stay on the
Generator surface. A small amount of mineral
deposits are needed for proper operation, but
a buildup of excessive mineral deposits causes
poor steaming efficiency and excessive moisture (wet steam) and will eventually severely
hinder the steaming action.
CLEANING STEAM GENERATOR
1. Turn the power off, unplug the power
cord, and allow the unit to cool down.
2. Remove the Top Cover (Figure 6).
3. Remove the Wing Nut and Generator
Cover (Figure 6).
4. Remove the Diffuser (Figure 6).
5. Examine all steam ports. If mineral
deposits have formed, place a flat
blade screwdriver or wire brush into
the openings. Use a twisting motion to
scrape the openings clean.
NOTE: If the mineral deposits come off in
flakes or layers, buildup is excessive.
6. Use a brass or stainless steel wire
brush and small scraper to loosen and
remove excessive deposits from the
Generator surface. If deposits are still
excessive and/or difficult to remove,
proceed to Step 7.
7. Pour food safe delimer solution (not
supplied) or white vinegar onto the
Generator surface. Be sure to follow
the delimer manufacturer’s directions
Top Cover
Spatula
Handle
Guard
Handle
Liner
for proper mixture and use. It must be
safe for use on aluminum.
8. Remove the delimer solution from the
Generator and rinse with clear water
to remove all traces of solution.
9. Clean the Spatula, Liner, Chimney,
Diffuser, Top Cover, and Generator
Cover in hot detergent water. Then
rinse in clear water and wipe dry.
10. Clean steam chamber of any product
spills.
11. Clean the surface of the unit with a
hot, clean, damp cloth (not dripping
wet) and wipe dry.
12. Re-install all parts and fasten the
Generator Cover.
13. Plug in the power cord and water line.
To ensure proper steaming characteristics,
some mineral deposits must be present on
the Generator surface. If during cleaning, the
surface does become free of mineral deposits
(bare aluminum), add plain tap water to surface and allow to boil off.
In soft water areas, it may be necessary to
add a small amount of calcium/minerals to the
generator surface to season it. This will ensure
proper steaming characteristics by producing a
thin coating of mineral deposits on the surface.
Seasoning mixture consists of 2 tablespoons
baking soda, and 1 cup water. Pour 1/4 cup of
seasoning mixture onto hot generator. After
mixture is converted to steam, the remaining loose powder can be removed. Repeat
as needed until there is a thin, white mineral
coating on the surface of the generator.
P/N 1011175 Rev. A 01/12
7
CALIBRATION
CYCLE
START
I
N
C
R
E
A
S
E
D
E
C
R
E
A
S
E
0
9
8
7
6
5
4
3
2
1
I
N
C
R
E
A
S
E
D
E
C
R
E
A
S
E
0
9
8
7
6
5
4
3
2
1
If the unit does not steam properly and the
water pressure is 20–25 psi, use the steps
below to calibrate the water volume.
1. With the unit positioned at the edge
of its location surface (counter, table,
etc.), slide the unit forward approximately 3" to expose the Water Volume
Control on the bottom left side of the
unit (Figure 5).
2. Use a small screwdriver to carefully
and slowly adjust the control. Turning
the control clockwise increases the
amount of water volume used per
cycle and counterclockwise decreases
the amount.
NOTE: The Water Volume Control is numbered 0-9 and is preset to 6. With each
turn, the unit will beep.
3. Plug in the power cord and test the
unit before returning it to service.
NOTE: If the steamer does not steam
properly after calibration, refer to the
Troubleshooting section of this manual.
Figure 5. Water Volume Control
CAUTION
Excessive force will damage the Water
Volume Control. Do NOT turn past the builtin stops on the control or the unit will be
damaged and void the warranty.
8
P/N 1011175 Rev. A 01/12
TROUBLESHOOTING
WARNING
To avoid possible personal injury and/or damage to the unit, inspection, test, and repair of electrical equipment should be performed by qualified
service personnel. The unit should be unplugged when servicing, except when electrical tests are required. Use extreme care during electrical circuit
tests. Live circuits will be exposed. If the troubleshooting steps listed below do not solve your machine’s problem, contact an Authorized Service
Agency for further assistance.
ProblemPossible CauseCorrective Action
Unit steams, but requires two or more
cycles to melt cheese.
Unit heats but does not steam.Low or no water pressure in water line.Remove the quick disconnect insert from the rear of
Excessive condensation in food compartment.
Generator Surface temperature is too low.Verify generator surface temperature to be 380–
420°F.
Insufficient or excessive calcium deposits on
Generator Surface.
Generator Cover is warped or loose.Verify the Wing Nut is tight. If noticeable steam
Low water pressure.Verify water pressure regulator is set to 20–25 psi.
Water volume adjustment is set too low.Calibrate the unit for proper water volume. Refer to
Generator steam ports are restricted.Verify the steam ports are not restricted. Clean
Generator Surface is bare.Generator Surface must have a thin calcium coating
Damaged or worn Quick Disconnect.Remove the Quick Disconnect from the rear of
Solenoid valve coil is defective.Contact your local Authorized Service Agency.
Control Board inoperable or problematic.
Quick Disconnect is not fully engaged at rear of unit
or is damaged.
CYCLE/START button is inoperable.Contact your local Authorized Service Agency.
Optical Switch is not activated.Ensure the Spatula is fully inserted and engages the
Optical Switch is inoperable.Contact your local Authorized Service Agency.
Water pressure is too high.Verify water pressure regulator is set to 20–25 psi.
Water volume adjustment is set too high.Calibrate unit for proper water volume. Refer to the
Verify generator surface has a thin calcium coating
for proper steaming. Refer to the Maintenance section of this manual.
escapes around the Generator Cover, replace the
cover.
Adjust accordingly.
the maintenance section of this manual.
accordingly.
for proper steaming. Refer to the Maintenance section of this manual.
the unit. The white plastic piece should protrude
approximately 1/8" from the metal.
the unit. While holding into an empty cup, press the
white plastic tip for 5 continuous seconds. A strong,
steady water flow should be noted. If so, re-engage
firmly into the unit. If not present, or low pressure,
contact your maintenance person or plumber.
Remove and re-engage the quick disconnection
firmly until a click is heard. Replace if damaged.
Optical Switch. Replace the Spatula if it is bent or
damaged.
Adjust accordingly.
Installation section of this manual.
P/N 1011175 Rev. A 01/12
9
TROUBLESHOOTING (continued)
ProblemPossible CauseCorrective Action
Unit only leaks water when powered
off.
Unit only leaks water when powered
on.
Solenoid Valve is leaking due to debris trapped
within its plunger and seat.
Control Board inoperable or problematic.Contact your local Authorized Service Agency.
CYCLE/START button shorted.
Contact your local Authorized Service Agency.
NOTE: This condition is not covered by warranty. To
prevent debris from entering a solenoid, an in-water
strainer must be used.
No heat and the green Ready Light
flashes continuously.
Unit does not operate, power switch is
on, but light is off.
Green Ready Light and yellow
Steaming Light turn on and off intermittently.
Generator is open.Contact your local Authorized Service Agency.
Solid State Relay not closing.
Control Board inoperable or problematic.
Loose, burnt, or broken wires in heater circuit.
Circuit is wired incorrectly.
Unit unplugged.Plug power cord into the appropriate outlet.
Circuit breaker is off.Reset the circuit breaker.
Power cord defective or inoperable.Contact your local Authorized Service Agency.
Power switch defective or inoperable.
Hi-Limit Thermostat is tripping because of an overheating Generator.
Hi-Limit Thermostat is tripping prematurely.If the Hi-Limit Thermostat trips within 380–420°F,
Verify the Generator Surface temperature is 380–
420°F. If temperature is above 420°F, contact your
maintenance person or Authorized Service Agency.
contact your local Authorized Service Agency.
10
P/N 1011175 Rev. A 01/12
WIRING DIAGRAM
P/N 1011175 Rev. A 01/12
11
REPLACEMENT PARTS
57
45
47
39
35
38
65
14
42
46
13
37
44
34
62
59
4
12
8
51
71
31
28
30
41
36
29
22
55
20
11
21
61
40
49
USE R.O. WATER SUPPLY ONLY
16
15
51
50
34
34
17
67
18
34
43
19
56
53
54
52
34
58
1
69
3
2
12
P/N 1011175 Rev. A 01/12
REPLACEMENT PARTS (continued)
Item Part No. Description Qty. Item Part No. Description Qty. Item Part No. Description Qty.
NOTE: Always use Teflon tape on threads
and tighten until very snug.
P/N 1011175 Rev. A 01/12
13
NOTES
14
P/N 1011175 Rev. A 01/12
NOTES (continued)
P/N 1011175 Rev. A 01/12
15
LIMITED WARRANTY
Equipment manufactured by Roundup Food Equipment Division of A.J. Antunes & Co. has been constructed of the finest materials available and manufactured to high quality standards. These units are warranted to be free from electrical and mechanical
defects for a period of one (1) year from date of purchase under normal use and service, and when installed in accordance with
manufacturer’s recommendations. To insure continued operation of the units, follow the maintenance procedures outlined in the
Owner’s Manual. During the first 12 months, electro-mechanical parts, non-overtime labor, and travel expenses up to 2 hours (100
miles/160 km), round trip from the nearest Authorized Service Center are covered.
1. This warranty does not cover cost of installation, defects caused by improper storage or handling prior to placing of the Equipment.
This warranty does not cover overtime charges or work done by unauthorized service agencies or personnel. This warranty does
not cover normal maintenance, calibration, or regular adjustments as specified in operating and maintenance instructions of this
manual, and/or labor involved in moving adjacent objects to gain access to the equipment. This warranty does not cover consumable/wear items such as Platen Release Sheets, Conveyor Belt Wraps, Gaskets, O-rings, Light Bulbs, Air Bulb Actuators, Rubber Seals,
Rubber Feet, Teflon Egg Rings, Teflon Dampers, Teflon Curtains, Damper Support Springs. This warranty does not cover damage to
the Load Cell or Load Cell Assembly due to abuse, misuse, dropping of unit/shock loads or exceeding maximum weight capacity (4
lbs). This warranty does not cover abuse/improper care of the spatula and liner. This warranty does not cover water contamination
problems such as foreign material in water lines or inside solenoid valves. It does not cover water pressure problems or failures
resulting from improper/incorrect voltage supply. This warranty does not cover Travel Time & Mileage in excess of 2 hours (100
miles/160 km) round trip from the nearest authorized service agency.
2. Roundup reserves the right to make changes in design or add any improvements on any product. The right is always reserved to
modify equipment because of factors beyond our control and government regulations. Changes to update equipment do not constitute a warranty charge.
If shipment is damaged in transit, the purchaser should make a claim directly upon the carrier. Careful inspection should be made of the
3.
shipment as soon as it arrives and visible damage should be noted upon the carrier’s receipt. Damage should be reported to the carrier.
This damage is not covered under this warranty.
4. Warranty charges do not include freight or foreign, excise, municipal or other sales or use taxes. All such freight and taxes are the
responsibility of the purchaser.
5. THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED
WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, EACH OF WHICH IS HEREBY EXPRESSLY DISCLAIMED. THE REMEDIES DESCRIBED ABOVE ARE EXCLUSIVE AND IN NO EVENT SHALL ROUNDUP BE LIABLE FOR SPECIAL CONSEQUENTIAL OR INCIDENTAL DAMAGES FOR THE BREACH OR DELAY IN PERFORMANCE OF THIS WARRANTY.
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