This Traulsen unit is built to our highest quality standards. We build our refrigerators, freezers and heated
cabinets this way as a matter of pride. This philosophy has made Traulsen the leader in commercial refrigeration since 1938. We thank you for your choice and confidence in Traulsen equipment and we know you
will receive many years of utility from this equipment.
All Traulsen units are placed on a permanent record file with the service department. In the event of any
future questions you may have, please refer to the model and serial number found on the name tag affixed
to the unit. Should you need service, however, call us on our toll free number, 800-825-8220 between 7:30
am and 4:30 pm CST, Monday thru Friday. It is our pleasure to help and assist you in every possible way.
INSTALLER
COMPLETE THE FOLLOWING INFORMATION PRIOR TO UNIT INSTALLATION
INITIAL START DATE:SERIAL NO.
MODEL TYPE:
COMPANY/INDIVIDUAL NAME:
INSTALLER:
RAC DOC REV. 2/03 P/N 375-70001-00
Page 2
TABLE OF CONTENTS
I. THE SERIAL TAGPage 1
II. RECEIPT INSPECTIONPage 2
III. INSTALLATION
IX. TROUBLESHOOTING GUIDEPage 6-7
X. WIRING DIAGRAMPage 8
XI. WARRANTY INFORMATIONPage 9
XII. INDEXPage 10
FORT WORTH, TX.
SERIALMODEL
VOLTS Hz PH
TOTAL CURRENTAMPS
MINIMUM CIRCUITAMPS
MAXIMUM OVERCURRENT PROTECTIONAMPS
LIGHTSWATTS
HEATERSAMPS
REFRIGERANTTYPEOZ
DESIGN PRESSUREHIGHLOW
REFRIGERANTTYPEOZ
DESIGN PRESSUREHIGHLOW
370-60294-00 REV (A)
I. THE SERIAL TAG
The serial tag is a permanently affixed sticker on
which is recorded vital electrical and refrigeration data
about your Traulsen product, as well as the model
and serial number. This tag is located on the upper
right interior side wall of all air curtain models.
READING THE SERIAL TAG
• Serial = The permanent ID# of your Traulsen
• Model = The model # of your Traulsen
• Volts = Voltage
• Hz = Cycle
• PH = Phase
• Total Current = Maximum amp draw
• Minimum Circuit = Minimum circuit required
• Lights = Light wattage
• Heaters = Heater amperage
• Refrigerant = Refrigerant type used
• Design Pressure = High & low side operating
pressures and refrigerant charge
• Agency Labels = Designates agency listings
-1-
Page 3
II. RECEIPT INSPECTION
III. INSTALLATION (cont’d)
All Traulsen products are factory tested for performance and are free from defects when shipped. The
utmost care has been taken in crating this product to
protect against damage in transit. All interior fittings
have been carefully secured to prevent damage.
You should carefully inspect your Traulsen unit for
damage during delivery. If damage is detected, you
should save all the crating materials and make note
on the carrier’s Bill Of Lading describing this. A freight
claim should be filed immediately. If damage is subsequently noted during or immediately after installation, contact the respective carrier and file a freight
claim. Under no condition may a damaged unit be returned to Traulsen & Co. without first obtaining written permission (return authorization).
III. INSTALLATION
III. a - LOCATION:
Select a proper location for your Traulsen unit, away
from extreme heat or cold. Allow enough clearance
between the unit and the side wall so that the door (s)
may open a minimum of 90°.
III. e - CORD & PLUG:
Traulsen Air Curtain models are supplied with a cord
& plug attached. It is shipped coiled at the bottom of
the cabinet, secured by a nylon strip. For your safety
and protection, all units supplied with a cord and plug
include a special three-prong grounding plug on the
service cord. Select only a dedicated electrical outlet
with grounding plug for power source.
NOTE: Do not under any circumstances, cut or remove
the round grounding prong from the plug, or use an
extension cord.
III. f-
POWER SUPPLY:
The supply voltage should be checked prior to connection to be certain that proper voltage for the cabinet wiring is available (refer to the serial tag to determine correct unit voltage). Make connections in accordance with local electrical codes. Use qualified
electricians.
Use of a separate, dedicated 20 amp circuit is required.
Size wiring to handle indicated load and provide necessary overcurrent protector in circuit (see amperage
requirements on the unit’s serial tag).
III. b - PACKAGING:
Traulsen Air Curtain units are shipped from the factory strapped to a sturdy wooden pallet and packaged
in a durable cardboard container. The carton is attached to the wooden skid with the use of large staples.
These should first be removed to avoid scratching the
unit when lifting off the crate.
To remove the wooden pallet, first if at all possible, we
suggest that the cabinet remain strapped to the pallet
during all transportation to the point of final installation. The straps can then be removed with a wire cutter and the unit rolled off the skid. Avoid laying the
unit on its front, side or back for removal of the pallet.
NOTE: Traulsen does not recommend laying the unit
down on its front, side or back. However, if you must
please be certain to allow the unit to remain in an upright position afterwards for 24 hours before plugging
it in so that the compressor oils and refrigerant may
settle.
III. c - CLEARANCE:
It is important for the proper operation and longevity
of your Traulsen unit that it have adequate provisions
for air supply to the compressor. Allow approximately
6-12” between the back grill of the unit and the wall
for proper air flow.
III. d - WIRING DIAGRAM:
Refer to the wiring diagram for any service work performed on the unit. Should you require one, please
contact Traulsen Service at (800) 825-8220, and provide the model and serial number of the unit involved.
IV. INTENDED USE
IV. a - OVERVIEW:
The Air Curtain Refrigerator is more than just a refrigerator. When the door of the unit is closed, it operates
as a force air refrigerator with a highly efficient refrigeration system that provides faster “pull down” and“recovery” times. When the door is opened, a series
of blower fans create a “wall” of air and areas of pressure, localizing a pattern of air movement across the
cabinet opening. This AIR CURTAIN seals itself around
objects so that, in effect, the door is both “open” and“closed” at the same time.
For best results, the air curtain was designed for “low
profile” food products typical of tray line/assembly line
and flight kitchen operations.
IV. b - TYPICAL OPERATING PARAMETERS:
The “curtain” is capable of maintaining 45°F tempera-
ture or below for approximately 45 minutes. HOWEVER, actual time your unit will run in this temperature zone depends on many factors, such as, room
ambient temperature and humidity levels, the amount
of time your unit was allowed to precondition the
food(s), food temperatures when placed in the unit,
type of food packaging, and profile of foods. It should
also be noted that there is a lag time between the “ambient air” temperature in the cabinet and that of the
actual product temperature. The food temperature
differential can be 10 - 20 degrees F cooler than the
temperature indicated by the temperature display.
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Page 4
IV. INTENDED USE (continued)V. PRODUCT FEATURES (cont’d)
SUGGESTED PAN SIZING:
IV. c Traulsen has designed this unit to operate with either
18” x 26” or 12” x 20” pans. Generally, 12” x 20”
pans block air flow which leads to reduced unit performance. While we strongly recommend the use of
18” x 26” rather than 12” x 20” pans, the latter may
still be used. However, when using 12” x 20” pans
these should be placed towards the top and bottom of
the unit to reduce the total blockage of air flow.
IV. d -
PRODUCT UNLOADING:
When unloading product from the Air Curtain
refrogerator, we recommend that this be done from
the top down.
V. PRODUCT FEATURES
V. a - CASTERS:
6” high casters are supplied standard for Air-Curtain
models. They are attached to 10-gauge stainless steel
corner plate reinforcements/stress pads. These are
shipped already installed on the unit for immediate use.
V. b - GRIPS & HANDLES:
For easy mobility, stainless steel recessed hand grips
are provided on the left and right sides. In addition, a
1” welded tubular push/pull handle is attached to the
rear of the cabinet.
V. c - MICROPROCESSOR CONTROL:
All Traulsen Air Curtain units manufactured after January 2003 include a 2-Stage microprocessor control.
Units manufactured prior to that date were provided
with manual electromechanical controls
V. d - ON DEMAN DEFROST:
Traulsen Air-Curtain models are supplied with a momentary defrost cycle. It is located on the front control (see figure 1), and by depressing the switch, the
unit will momentarily disable the compressor, the coil
and the fans. This “On-Demand Defrost” feature allows proper defrosting of the accumulated condensation. Condensate is removed through use of an electric condensate evaporator drain pan.
V. e - CONDENSATE EVAPORATOR:
During the “On-Demand Defrost” cycle or the “Off
Cycle” of the compressor, the evaporator coil will defrost. The condensate from the evaporator coil flows
from the top of the unit down a drain in the back to a
condensate pan. Vapor escapes through the back grill.
The vapor can sometimes be visible and should be
considered a normal operating condition.
Proper attention should be given to defrosting your
unit. Every “event” or time the unit is used with the
door open, the coil will build-up ice. This reduces the
effectiveness of the overall operation of the unit.
V. f - TRAY SLIDES:
Ten (10) pairs of removable tray slides are provided
standard at 4-1/2” spacing. Additional tray slides may
also be purchased for a total of no more than 15 pairs
at 3” spacing. Each tray slide can accommodate either one (1) 18”x 26” or one (1) 12” x 20” pan. The
tray slides allow for individual pans to be pulled out
3/4 of their length without tipping. In addition, the side
wall air ducts are designed with two (2) tabs, which
act as a backstop, providing better air flow, which is
important to maintaining proper temperatures throughout the cabinet.
V. g - WRAP-AROUND PERIMETER BUMPERS:
As the Air-Curtain refrigerator was designed to be mobile, a full perimeter rubber bumper guard is included
to protect walls and doors during movement.
VI. ELECTRONIC CONTROLLER
VI. a - CONTROL OVERVIEW:
The Traulsen Air Curtain models are supplied standard
with an easy to use microprocessor control. It features several important user functions, greatly enhancing the overall utility of the cabinet.
VI. b - CONTROL FEATURE - TEMP RECALL:
This feature allow the operator to display either the
actual internal cabinet air temperature (default), or the
desired “Set-Point” temperature (alternate).
ACTUAL: The factory default setting shows the actual
internal cabinet temperature and acts as a digital thermometer. A momentary touch of the TEMP RECALL
button will recall the original dial setting. The display
will then automatically return the displaying the actual internal cabinet temperature.
SET-POINT: To display the set-point temperature instead of the actual internal cabinet temperature, press
and hold the TEMP RECALL button for five (5) seconds. The fourth digit on the display will flash either
“S” (SET) or “A” (ACTUAL) to indicate which mode is
active. To switch back again, repeat this step holding
the TEMP RECALL button for five (5) seconds.
VI. c - CONTROL FEATURE - ON/OFF:
This button has two uses, the first is to turn the unit
ON and OFF. The second allows for the temperature
display to be changed to indicate either degrees Fahrenheit or degrees Celsius.
To change between temperature scales, press and hold
the ON/OFF button for five (5) seconds. The display
will then switch from “dgF” to “dgC”. Repeat this
step to change the temperature scale again.
-3-
Page 5
VI. ELECTRONIC CONTROLLER (cont’d)
TEMP
RECALL
ON
CYCLE
ON / OFF
VI. d - CONTROL FEATURE - ON LIGHT:
When illuminated the ON light indicates that the power
is ON.
VI. e - CONTROL FEATURE - CYCLE LIGHT:
When illuminated the CYCLE light indicates that the
cabinet is cooling down to the desired SET-POINT temperature. When cooling elements are activated, this
light will remain illuminated until the cabinet has
reached the SET-POINT temperature, and will go OFF
at that time.
VI. f - CONTROL FEATURE - ON DEMAND DEFROST:
Proper attention should be given to defrosting your
unit. Every “event” or time the unit is used with the
door open, the coil will build-up ice. This reduces the
effectiveness of the overall operation of the unit.
ON DEMAND
TEMPTEMP
DEFROST
AIR CURTAIN
VI. h - Control Function Buttons:
TEMPERATURE
Press To Decrease Temperature or Initiate Lo-Temp Operating Mode
TEMPERATURE
Press To Increase Temperature or Return To
Refrigerator Operating Mode
TEMP RECALL
Press To Display Either Actual or Set-Point Temperature
ON DEMAND DEFROST
Press To Initiate On-Demand Defrost, Which Allows You
To Defrost The Coil Of Ice Build-Up After Every Use
To prevent the build-up of ice on the coil, Traulsen has
included an “On-Demand” defrost feature. To initiate
an on-demand defrost, simply press the ON-DEMAND
DEFROST button. Use this feature after every use.
VI. g - CONTROL FEATURE - 2-STAGE THERMOSTAT:
A 2-Stage thermostat is provided standard with all Air
Curtain units manufactured with an electronic controller (see section VI. a). This allows the user to choose
from two operating modes, 1) Standard Operating
Mode of 37°F, or 2) Lo-Temp Operting Mode of 32°F.
The latter provides you with the added flexibility of
being able to pre-chill products such as milk and
juices.
ON/OFF
Serves Two Functions, Turns Cabinet ON or OFF And
Also Allows You To Change The Temperature Scale From
Degrees Farenheit To Celsius As Required.
-4-
Page 6
VII. CARE & MAINTENANCE
VIII. OTHER
VII. a The most important thing you can do to insure a long,
reliable service life for your Traulsen is to regularly
clean the condenser coil. The condensing unit requires
regularly scheduled cleaning to keep the finned condenser clean of lint and dust accummulation. Keeping
the condenser clean allows the cabinet to operate more
efficiently and use less energy.
To clean the condenser, first disconnect electrical
power to the cabinet and remove the front louver assembly. To remove this, remove the four (4) Phillips
head screws located on both sides at the top and bottom of the louver assembly. Once the screws are removed, the panel can be removed allowing full access
to the front facing condenser. Vacuum or brush any
dirt, lint or dust from the finned condenser coil, the
compressor and other cooling system parts. If significant dirt is clogging the condenser fins, use compressed air to blow this clear. Care should be taken
not to bend any of the condenser fins, as this will reduce performance and compressor life.
Replace louver assembly and the four (4) Phillips head
screws which hold it in place.
CLEANING THE CONDENSER:
VIII. a - SERVICE INFORMATION:
Before calling for service, please check the following:
Is the electrical cord plugged in?
Is the fuse OK or circuit breaker on?
Is the ON/OFF switch in the ON position?
Is the coil defrosted? Push the “momentary
defrost” button on the control panel. Allowing proper defrosting of the coil will allow
proper perfomrance in capacity.
If after checking the above items and the unit is still
not operating properly, please contact an authorized
Traulsen service agent. A complete list of authorized
service agents was provided along with your Traulsen
unit. If you cannot locate this, you may also obtain
the name of a service agent from the Tech Service
page of our website: www.traulsen.com.
If service is not satisfactory, please contact our inhouse service department at:
VII. b Exterior stainless steel should be cleaned with warm
water, mild soap and a soft cloth. Apply with a dampened cloth and wipe in the direction of the metal grain.
Avoid the use of strong detergents and gritty, abrasive
cleaners as they may tend to mar and scratch the surface. Do NOT use cleansers containing chlorine, this
may promote corrosion of the stainless steel.
Care should also be taken to avoid splashing the unit
with water containing chlorinated cleansers, when mopping the floor around the unit.
For stubborn odor spills, use baking soda and water
(mixed to a 1 TBSP baking soda to 1 pint water ratio).
VII. c - CLEANING THE INTERIOR:
For cleaning stainless steel interiors, the use of baking soda as described in section “VII. b” is recommended. Use on breaker strips as well as door gaskets. All interior fittings are removable without tools
to facilitate cleaning.
WARNING: DISCONNECT ELECTRICAL POWER
SUPPLY BEFORE CLEANING ANY PARTS OF THE
UNIT.
CLEANING THE EXTERIOR:
Traulsen & Co., Inc.
4401 Blue Mound Road
Fort Worth, TX 76106
(800) 825-8220
Traulsen & Co., Inc. reserves the right to change specifications or discontinue models without notice.
VIII. b - SPARE PARTS:
Spare or replacement parts may be obtained through
a parts supplier or one of our authorized service
agents. A complete list of authorized service agents
accompanies this manual and is also posted on our
company’s official website @ www.traulsen.com.
VIII. c - WARRANTY REGISTRATION:
For your convenience, the warranties on your new
Traulsen unit may be registered with us by one of two
methods. Completing the enclosed warranty card
(shipped with the unit), or by filling out the on-line
warranty registration form located on the Technical
Service page of our website (www.traulsen.com).
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Page 7
IX. TROUBLESHOOTING GUIDE
PROBLEMPOSSIBLE CAUSE/REMEDY
1. Condensing unit fails to start - no hum.1. Line Disconnected - Reconnect
4. Relay Not Closing - Determine Reason & Correct,
Replace If Necessary
5. Compressor Motor Has Winding Open Or Shorted - Replace
Compressor
6. Internal Mechanical Trouble In Compressor - Replace
Compressor
3. Condensing unit starts, but fails to switch1. Improperly Wired - Check Wiring Against Diagram
off of “start” winding.2. Low Voltage - Determine Reason & Correct
3. Relay Failing To Open - Determine Reason & Correct,
Replace If Necessary
4. Run Capacitor Defective - Determine Reason & Replace
5. Excessively High Discharge Pressure - Check Disharge
Shut-Off Valve, Or Insufficient Cooling On Condenser
6. Compressor Motor Has Winding Open Or Shorted - Replace
Compressor
7. Internal Mechanical Trouble In Compressor - Replace
Compressor
4. Condensing unit starts and runs, but short1. Additional Current Passing Through Overload Protector cycles on overload protector.Check Wiring Diagram. Check For Added Fan Motors,
Pumps, etc., Connected To Wrong Side Of Protector
2. Low Voltage To Unit (or unbalanced if three phase) Determine Reason & Correct
3. Overload Protector Defective - Check Current - Replace
Protector
4. Run Capacitor Defective - Determine Reason & Replace
5. Excessive Discharge Pressure - Check Ventilation,
Restrictions In Cooling Medium, Restrictions in Refrigeration
System
6. Suction Pressure Too High - Check For Possibility Of
Misapplication. Use Stronger Unit
7. Compressor Too Hot (return gas) - Check Refrigerant Charge
(fix leak) Add If Necessary
8. Compressor Motor Has Winding Shorted - Replace
Compressor
5. Condensing unit runs but short cycles on... 1. Overload Protector - See #4 Above
2. Thermostat - Differential Set Too Close, Widen
3. High Pressure “Cut-Out” Due To:
a) Insufficient Air or Water Supply - Check Air or Water
Supply To Condenser, Correct
b) Overcharge - Reduce Refrigerant Charge
c) Air In System - Purge
4. Low Pressure “Cut-Out” Due To:
a) Liquid Line Solenoid Leaking - Replac e
b) Compressor Valve Leak - Replace
c) Undercharge - Fix Leak, Add Refrigerant
d) Restriction In Expansion Device - Replace Device
-6-
Page 8
IX. TROUBLESHOOTING GUIDE (cont’d)
PROBLEMPOSSIBLE CAUSE/REMEDY
6. Condensing unit operates for prolonged1. Shortage Of Refrigerant - Fix Leak, Add Charge
periods or continuously.2. Control Contacts Stock or Frozen Closed - Clean Contacts or
Replace Control
3. Excessive Heat Load Placed Into Cabinet - Allow Unit
Sufficient Time For Removal Of Latent Heat
4. Prolonged or Too Frequent Door Openings - Plan or
Organize Schedule To Correct Condition
5. Evaporator Coil Iced - Defrost
6. Restriction In Refrigeration System - Determine Locations &
Remove
7. Dirty Condenser - Clean Condenser
8. Filter Dirty - Clean or Replace
7. Start capacitor open or shorted or blown.1. Relay Contacts Not Opening Properly - Clean Contacts or
Replace Relay If Necessary
2. Prolonged Operation On Start Cycle Due To:
a) Low Voltage To Unit - Determine Reason & Correct
b) Improper Relay - Replace
c) Starting Load Too High - Correct By Using Pump Down
Arrangement If Necessary
3. Excessive Short Cycling - Determine Reason For Short
Cycling (see #5 above) And Correct
4. Improper Capacitor - Determine Correct Size
8. Run capacitor open, shorted or blown.1. Improper Capacitor - Determine Correct Size & Replace
2. Excessively High Line Voltage (110% of rated max) Determine Reason & Correct
13. Noisy condensing unit.1. Loose Parts or Mounting - Find & Tighten
2. Tubing Rattle - Reform To Free Of Contact
3. Bent Fan Blade Causing Vibration - Replace Blade
4. Fan Motor Bearing Worn - Replace Motor
-7-
Page 9
X. WIRING DIAGRAM
-8-
Page 10
XI. WARRANTY INFORMATION
STANDARD DOMESTIC WARRANTY
TRAULSEN & CO., INC. warrants new equipment to the original purchaser, when installed within the United States
against defective material and workmanship for one (1) year from the date of original installation. Under this warranty, TRAULSEN & CO., INC. will repair or replace, at its option, including service and labor, all parts found to be
defective and subject to this warranty. The compressor part is warranted for an additional four (4) years. During this
period TRAULSEN & CO., INC. will supply replacement compressor(s) if deemed defective, however, all installation,
recharging and repair costs will remain the responsibility of the owner.
This warranty does not apply to damage resulting from fire, water, burglary, accident, abuse, misuse, transit, acts of
God, attempted repairs, improper installation by unauthorized persons, and will not apply to food loss.
THERE ARE NO ORAL, STATUTORY OR IMPLIED WARRANTIES APPLICABLE TO TRAULSEN, INCLUDING BUT NOT
LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE WHICH
EXTEND BEYOND THE DESCRIPTION ON THE FACE HEREOF. TRAULSEN SHALL HAVE NO OBLIGATION OR LIABILITY FOR CONSEQUENTIAL OR SPECIAL DAMAGES, GROWING OUT OF OR WITH RESPECT TO THE EQUIPMENT
OR ITS SALE, OPERATION OR USE, AND TRAULSEN NEITHER ASSUMES NOR AUTHORIZES ANYONE ELSE TO
ASSUME FOR IT ANY OBLIGATION OR LIABILITY IN CONNECTION WITH THE EQUIPMENT OR ITS SALE, OPERATION OR USE OTHER THAN AS STATED HEREIN.
INTERNATIONAL COMMERCIAL WARRANTY
(for Canadian warranties see domestic US warranty)
TRAULSEN & CO., INC. warrants to the original purchaser the Refrigeration Equipment manufactured and sold by it to be
free from defects in material and workmanship under normal use and service for a period of one (1) year from date of
shipment. Under this warranty, TRAULSEN & CO., INC. will reimburse the purchaser for the replacement of any part of said
equipment (excluding dryers & refrigerant gas) which then proves to be defective. This warranty is void if said equipment or
any part thereof has been subject to misuse, damage in transit, accident, negligence or alteration.
TRAULSEN’S standard warranty does not apply to Export Sales. Rather, for a period of one (1) year from date of original
installation not to exceed Fifteen (15) months from date of shipment from factory, TRAULSEN:
will replace, F.O.B. factory, any defective parts normally subject to warranty.
will not cover the cost of packing, freight or labor such costs being the sole responsibility of the dealer.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EITHER EXPRESSED OR IMPLIED AND CONSTITUTES
TRAULSEN’S FULL OBLIGATION AND LIABILITY. WARRANTIES NOT AVAILABLE ON REMOTE MODELS.