Traulsen RAC Series User manual

OWNER’S MANUAL
RAC-SERIES AIR CURTAIN REFRIGERATOR
Hours Of Operation: Monday - Friday 7:30 a.m. - 4:30 p.m. (CST)
Quality Refrigeration
4401 Blue Mound Road Fort Worth, Texas 76106 (USA)
Phone: [phone] | Service Fax: [phone] | E-mail: [email protected] | Website: traulsen.com

1 THE SERIAL TAG
A THE SERIAL TAG & LOCATION PAGE 3
B THE SERIAL TAG PAGE 3
2 RECEIPT INSPECTION PAGE 3
3 INSTALLATION
A LOCATION PAGE 3
B PACKAGING PAGE 4
C CLEARANCE PAGE 4
D WIRING DIAGRAM PAGE 4
E CORD & PLUG PAGE 4
F POWER SUPPLY PAGE 4
4 INTENDED USE
A OVERVIEW PAGE 4
B TYPICAL OPERATING PARAMETERS PAGE 5
C SUGGESTED PAN SIZING PAGE 5
D PRODUCT UNLOADING PAGE 5
5 PRODUCT FEATURES
A CASTERS PAGE 5
B GRIPS & HANDLES PAGE 5
C ELECTRONIC CONTROL PAGE 5
D ON DEMAND DEFROST PAGE 5
E CONDENSATE EVAPORATOR PAGE 6
F TRAY SLIDES PAGE 6
G WRAP-AROUND PERIMETER BUMPERS PAGE 6
6 ELECTRONIC CONTROLLER
A CONTROL OVERVIEW PAGE 6
B CONTROL FEATURE-ON/OFF PAGE 6
C CONTROL FEATURE-ON LIGHT PAGE 6
D CONTROL FEATURE-CYCLE LIGHT PAGE 6
E TEMP RECALL PAGE 6
This Traulsen unit is built to our highest quality standards. We build our refrigerators 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 condence in Traulsen equipment and we know you will receive many years of utility from this equipment.
RAC SERIES
Page 2
RAC-SERIES AIR-CURTAIN REFRIGERATOR
TABLE OF CONTENTS
7 OPEN DOOR
A DOOR OPEN TIMER PAGE 7
B DOOR OPEN TIMER ELAPSE PAGE 7
C COUNT DOWN ALARM SEQUENCE PAGE 7
D TERMINATE DOOR ALARM PAGE 7
E AUTO/OFF/SHUT DOWN (INACTIVE) PAGE 7
F AUTO/OFF/SHUT DOWN (ACTIVE) PAGE 7
8 ELECTRONIC CONTROLLER
A ON DEMAND DEFROST PAGE 8
B 2-STAGE SELECTOR PAGE 8
C GENERAL OPERATING INSTRUCTION PAGE 8
9 CARE & MAINTENANCE
A CLEANING THE CONDENSER PAGE 9
B CLEANING THE EXTERIOR PAGE 9
C CLEANING THE INTERIOR PAGE 9
10 SERVICE
A SERVICE INFORMATION PAGE 9
B SPARE PARTS PAGE 10
C WARRANTY REGISTRATION PAGE 10
11 TROUBLESHOOTING GUIDE
A TROUBLE SHOOTING GUIDE CHART PAGE 10
B HELPFUL HINTS FOR TOP PERFORMANCE PAGE 11
12 WIRING DIAGRAM PAGE 12
13 WARRANTIES PAGE 13

1. THE SERIAL TAG
1A – SERIAL TAG & LOCATION:
The serial tag is a permanently afxed label on which is recorded vital electrical and refrigeration data about your Traulsen
product, as well as the model and serial number. The serial tag is located near the power cable, when facing the control
(front of unit) it is located in the exterior left side wall in the upper left corner of the of the unit. Prior to installation, test the
electrical service to assure that it agrees with the specications of the equipment marked on the serial tag. An example of
the serial tag is shown below (See Fig. 1).
Fig. 1
2. RECEIPT & INSPECTION
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.
Carefully inspect your Traulsen unit for damage during deliv-
ery. If damage is detected, you should save all crating mate-
rials and make note on the carrier’s Bill of Lading describing
the damage. A freight claim should be led immediately. If
damage is subsequently noted during or immediately after
installation, contact the respective carrier and le a freight
claim. There is a ve (5) day limit to le freight damage with
the carrier. Under no condition may a damaged unit be re-
turned to Traulsen without rst obtaining written permission
(return authorization). You may contact Traulsen customer
care at [phone] to request a return.
3. INSTALLATION
3A - LOCATION:
Select a proper location for your Traulsen unit is very im-
portant.
Always:
• Install to assure that unit is level.
• Install to assure that unit is away from extreme heat.
• Install to assure that unit is away from a steamer.
• Install to assure that unit is NOT placed near or under a
ventilation duct or hood, (this will disturb the airow of the air
curtain and will hamper the performance of the unit).
• Install to assure that unit is 6” minimum distance from back
of unit to wall or obstruction.
• Install to assure that the door(s) may open a minimum of
90 degrees.
RAC SERIES
Page 3

RAC SERIES
Page 4
3. INSTALLATION (continued)
3A - LOCATION:
Never:
• Install equipment in an area of standing water
• Install near or under a ventilation hood or duct return
• Install equipment in an area not conductive to safe and proper operator use.
3B - PACKAGING:
Traulsen Air Curtain units are shipped from the factory on a 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 rst be removed to avoid scratching
the unit when lifting off the crate. Remove the wooden pallet and strapping material, and the unit should be 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 48 hours before plugging the unit in or attempting to
place the unit in to service, to assure that the compressor oils and refrigerant may settle.
3C - 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 ow.
3D - WIRING DIAGRAM:
Refer to the wiring diagram for any service work performed on the unit. Should you require one, please contact Traulsen
Service at [phone], and provide the model and serial number of the unit involved.
3E - CORD & PLUG:
Traulsen Air Curtain models are supplied with a cord & plug attached. It is shipped coiled at the bottom of the cabinet.
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.
3F - 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 qualied electricians.
Use of a separate, dedicated 15 amp circuit is required. Size wiring to handle indicated load and provide
necessary over-current protector in circuit (see amperage requirements on the unit’s serial tag).
4. INTENDED USE
4A- OVERVIEW:
The refrigerator is designed to operate at standard temperature of 38°F (3.3°C) with door closed. With the door open (used
as an air curtain) the unit can maintain 40°F (4.4°C) or lower temperature 60 to 120 minutes dependent upon application and
operating conditions (room temp, humidity, surrounding air exchanges, and voltage). When the door of the unit is closed,
it operates as a force air refrigerator with a highly efcient refrigeration system that provides faster “pull down” and “recov-
ery” times than standard refrigerators. When the door is opened, a series of blower fans create a “wall” of air and areas of
pressure, localizing a unique pattern of air from both the left and right side walls, as well as from the top. This movement
across the cabinet opening keeps the cold air in and the warm air out of the food zone. This AIR CURTAIN seals itself around
objects and is ideal for hospital and nursing home tray line / assembly line kitchen operations, ight kitchens, cafeterias,
fast food and QSR applications. For best results, the air curtain was designed for “low prole” food products typical of these
applications.

RAC SERIES
Page 5
4. INTENDED USE (continued)
4B - TYPICAL OPERATING PARAMETERS:
The “curtain” is capable of maintaining 40°F (4.4°C) temperature or below for 60 to 120 minutes based at 75°F (24°C)/ 45%
RH / 120V 15 amp dedicated circuit. HOWEVER, actual time your unit will run in this temperature zone depends on many
factors, such as: room ambient temperature, humidity levels, air disruption (such as a hood, vent, or air return), amount of
time unit was allowed to precondition the food(s), food temperatures when placed into the unit, type of food packaging, and
prole 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°F - 20°F (-12°C to -4°C) cooler than the
temperature indicated by the temperature display.
4C - SUGGESTED PAN SIZING:
Traulsen has designed this unit to operate with 18” x 26” (46 x 66 cm) trays. Ten (10) pair of removable tray slides are pro-
vided at a xed 4-1/4” (10.8 cm) specic spacing to assure proper air-ow and maximum performance.
4D - PRODUCT UNLOADING:
When unloading product from the Air Curtain refrigerator, it is recommend that this be done from the top down. Empty trays
can be removed or left in the unit after unloading their contents and will not effect the overall performance of the unit.
5. PRODUCT FEATURES
5A - CASTERS:
6” diameter polyurethane casters, 2 each with locks 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 imme-
diate use.
5B - GRIPS & HANDLES:
For easy mobility, stainless steel recessed hand grips are provided on the left and right sides. In addition, a 1” (2.5 cm)
welded tubular push/pull handle is attached to the rear of the cabinet, protected by full perimeter bumper provided standard.
5C - ELECTRONIC CONTROL:
All Traulsen Air Curtain units are supplied with a microprocessor controller.
5D - ON DEMAND DEFROST:
Traulsen Air-Curtain models are supplied with an auto defrost as well as on demand defrost cycle. Located on the front
control, and by depressing the switch, the unit will self defrost (maximum of 15 minutes). During a on demand defrost cycle,
the indicator light will illuminate above the switch and the controller display will show “Def” and momentarily disable the com-
pressor, the coil and the fans. This “On-Demand Defrost” feature allows proper defrosting of the accumulated condensation
and ice build-up on the coil. Defrosting is needed to assure maximum efciency and heat exchange of the coil, assuring
maximum performance. After the defrost cycle ends, the unit will wait 60 seconds before the compressor and or the fans will
return to normal operation, achieving the best restart performance and cooling temperatures. It is possible that the unit will
self-initiate a defrost if excessive ice is on the coil.
NOTE: If the coil is not defrosted, temperatures will rise and reduced performance will be noticeable.
If the unit is in a defrost cycle, it can be canceled by pushing the defrost button. This will force the unit out of the defrost
cycle. The unit will wait 60 seconds before the compressor and or the fans will return to normal operation, achieving the best
restart performance and cooling temperatures.

RAC SERIES
Page 6
5. PRODUCT FEATURES (continued)
5E - 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 ows from the top of the unit down a drain in the back to a condensate pan. Vapor escapes through
the back grill. 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.
5F - TRAY SLIDES:
Ten (10) pairs of removable tray slides are provided standard at 4-1/4” (10.8 cm) spacing. Each tray slide can accommodate
one (1) 18” x 26” (46 x 66 cm) pan / tray.
5G - WRAP-AROUND PERIMETER BUMPERS:
As the Air-Curtain refrigerator was designed to be mobile, a full extension perimeter rubber bumper guard is included to
protect the unit as well as surrounding walls and doors during movement.
6. ELECTRONIC CONTROLLER
6A - CONTROL OVERVIEW:
The Traulsen Air Curtain models are supplied standard with an easy to use microprocessor control. It features several im-
portant user functions, greatly enhancing the overall utility of the cabinet. The Traulsen RAC-37 is the only two-stage (two
temperature settings) Air Curtain currently available on the market. This feature allows the unit to be placed into service at
either “Standard Temp” or lower “Colder Temp” settings.
6B - CONTROL FEATURE - ON/OFF:
This button has two uses: The rst is to turn the unit ON and OFF. The second allows for the temperature display to be
changed to indicate either degrees (F) Fahrenheit or degrees (C) Celsius. To change between temperature scales; While
unit is OFF, press and hold the ON/OFF button for ve (5) seconds. The refrigerator will start and then the display will switch
from “dgF” to “dgC”. Repeat this step to change the temperature scale again.
6C - CONTROL FEATURE - “ON” LIGHT:
When illuminated the ON light indicates that the power is ON.
6D - 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 illuminate until the cabinet has reached the SET-POINT temperature,
and will go OFF at that time.
6E - TEMP RECALL:
This feature displays either the actual internal cabinet air temperature (default), or the desired “Set-Point” temperature (al-
ternate).
ACTUAL: The factory default setting shows the actual (A) internal cabinet temperature and acts as a digital thermometer.
A momentary touch of the TEMP RECALL button will recall the original temperature setting. The display will then automati-
cally return the displaying the actual internal cabinet temperature.
SET-POINT: To display the set-point (S) temperature instead of the actual internal cabinet temperature. The display will indi-
cate the set-point temperature until such time that the temperature is approximately 5°F +/- away from the set-point setting
for more than 5 minutes, at which time the display will indicate actual temperature. Once the internal temperature return to
set-point, the controller resumes to show set-point values.
To switch from one of these display functions to the other, press and hold the TEMP RECALL button for ve (5) seconds.
The display will ash 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 ve (5) seconds.

RAC SERIES
Page 7
7. OPEN DOOR
7A – DOOR OPEN TIMER:
The RAC-37 Air Curtain is designed to operate at standard temperature of 38°F (3.3°C) (adjustable) with the door closed.
Normal operation should be the door left closed when not necessary to access food tray line items. The open “door sen-
sor” detects when the door is opened, and an LED display indicates “OPEn” as a reminder. When the door is opened a
timer set to the factory default of 120 minutes (variable) begins a countdown sequence. The door alarm parameters can
be set to remind, alert, alarm or auto shut down unit if the door is left in the open position beyond managements intend-
ed food safety practices or design function of the unit. If the door is closed after being open for less than 30 minutes the
open door alarm timer will be reset as the unit continues normal operation.
7B – DOOR OPEN TIMER ELAPSE:
At the termination of the time elapse count down (factory default set at 120 minutes), an audio alert will beep to alert that
the door has been open for the maximum time parameter that has been set, alerting operator the door should be closed.
If the door is closed between 30 and 120minutes, the door alarm timer is reset and after 5 minutes an automatic defrost
cycle begins.
7C – COUNT DOWN ALARM SEQUENCE:
If the door is not closed before the conclusion of the door open timer (factory default set at 120 minutes) the unit will
display a 5 minute countdown timer. This is to alert the operator that at the election of management a pre-selected time
period has been exceeded or the design limitation of the unit has been reached, and door must be closed. At the end of
the 5 minute countdown timer the unit will ash “OPEn” and beeps three times every ten seconds. This mode is provided
to further ensure proper operational procedures are met, management food safety programs are adhered to, unwanted
operator error of equipment and the unit does not run indenitely with the door open. If the door is closed after 120 min-
utes the unit will operate as dened in 7E (Standard default setting) or 7F (Optional setting).
7D – TERMINATE DOOR ALARM:
To terminate the open door alarm, the door must be closed and remain closed for 30 minutes (factory default parameter).
Unit may initiate a defrost cycle at this time.
7E – AUTO OFF / SHUT DOWN (INACTIVE) (Standard default setting):
After the ve minute countdown timer expires the evaporator and condenser fans remain on and will continue to run when
the door is closed. Unit may initiate a defrost cycle at this time.
7F – AUTO OFF / SHUT DOWN (ACTIVE) (Optional setting):
This mode is used to actively force the unit to power down and not allow it to operate beyond management practices or
the design function of the unit. The compressor and evaporator fans will completely shut down after the elapsed door
open time has been exceeded, and will remain off until the unit has been reset by cycling the power switch to off and then
back on.
IMPORTANT NOTE: Perishable product left in the unit past the 120 minute open door session may be at unsafe
temperatures.

RAC SERIES
Page 8
8. ELECTRONIC CONTROLLER
TEMP RECALL
Press to display either actual or set-
point temperature.
POWER ON/OFF
Serves two functions, turns cabinet
ON or OFF and also allows you to
change the temperature scale from
degrees (F) Fahrenheit to degrees (C)
Celsius as required.
2 STAGE SELECTOR
•STANDARD TEMP:
Operating temperature is pre-set
at 380F (3.30 C) with temperature
range of 320F (00 C) to 400F (4.40 C).
•COLDER TEMP:
Operating temperature pre-set at
320F (00 C) with temperature range
of 250F (-40 C) to 320F (00 C).
•SELECT STAGE:
Press & hold STANDARD TEMP
(arrow up) or COLDER TEMP
(arrow down) for 5 seconds.
•CHANGE TEMPERATURE:
Press UP arrow or DOWN arrow.
ON DEMAND DEFROST
Press to initiate on-demand defrost
-OR- over-ride a defrost cycle in progress.
8A - 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. 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 once a day or as needed to achieve proper performance.
8B - 2-STAGE SELECTOR:
A 2-Stage thermostat is provided standard with all Air Curtain units manufactured with an electronic controller.
This allows the user to choose from two operating modes:
1) Standard Operating Mode of 38°F (3.30 C) or
2) Lo-Temp 2-Hr. Temporary Operating Mode of 32°F (00C)
Lo-Temp Operating Mode provides you with the added exibility of being able to pre-chill products (such as milk and
juices) for prolonged “Tray Delivery” times.
8C - GENERAL OPERATING INSTRUCTIONS:
1) Pre-chill cabinet with door closed for minimum of 1 hour with empty trays in position stabilize at 38°F (3.30 C) or de-
sired set temperature.
2) Load cabinet from bottom to top, PUSH TRAYS TO REAR OF WALL.
3) After loading, close cabinet door and allow inside temperature to re-stabilize to desired temperature.
4) Unload cabinet from top to bottom. Keep empty trays in position.
5) This unit is equipped with an automatic energy efcient non-electric condensate evaporator.

RAC SERIES
Page 9
9. CARE & MAINTENANCE
9A - CLEANING THE CONDENSER:
WARNING: DISCONNECT ELECTRICAL POWER SUPPLY BEFORE CLEANING ANY PARTS ON THE UNIT.
The most important thing you can do to insure a long, reliable service life for your Traulsen is to regularly clean the con-
denser coil. The condensing unit requires regularly scheduled cleaning to keep the nned condenser clean of lint and dust
accumulation. Keeping the condenser clean allows the cabinet to operate more efciently and use less energy.
To clean the condenser, rst disconnect electrical power to the cabinet and remove the front and/or rear louver assembly.
To remove this, remove the screws located on louver assembly. Once the screws are removed, the panel can be removed
allowing full access to the front facing condenser. Vacuum any dirt, lint, or dust from the nned condenser coil, the compres-
sor and other cooling system parts. If signicant dirt is clogging the condenser ns, use brush or compressed air to blow
this clear. Care should be taken not to bend any of the condenser ns, as this will reduce performance and compressor life.
Replace louver assembly and screws which hold it in place.
9B - CLEANING THE EXTERIOR:
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 oor
around the unit.
For stubborn odor spills, use baking soda and water (mixed to a 1 TBSP baking soda to 1 pint water ratio).
9C - CLEANING THE INTERIOR:
For cleaning stainless steel interiors, the use of baking soda is recommended. Use on breaker strips as well as door gas-
kets. All interior ttings are removable without tools to facilitate cleaning.
10. SERVICE
10A - SERVICE INFORMATION:
Before calling for service, please check the following:
• Push the “momentary defrost” button on the control panel. Allowing proper defrosting of the coil will allow proper perfor-
mance in capacity. If the unit is NOT WORKING at all, please check the following;
• Is the electrical cord plugged in?
• Is the circuit breaker on and fuse OK?
• Is the “ON” indicator light illuminated? Press POWER On/Off button to illuminate.
NOTE: If the unit is NOT COOLING down to the proper temperatures, verify that the coil is defrosted.
If after checking the above items and the unit is still not operating properly, please contact an authorized Traulsen service
agent. You may obtain the name of a service agent from the MENU/SERVICE TAB on our website: www.traulsen.com
For additional information, contact the Traulsen Parts and Service Department: [phone] between 7:30 am – 4:30
pm CST, Monday-Friday.
Traulsen reserves the right to change specications or discontinue models without notice.

RAC SERIES
Page 10
PROBLEM POSSIBLE CAUSE
1. Product zone temperature too high. • Control Setting Too High - Reset Control.
• Inadequate Air Circulation - Rearrange Product Load To Improve Air Circulation And Flow. Keep Empty
Trays in Position.
• Unit May Need To Be Manually Defrosted.
• Unit May Be In Defrost Cycle. See Indicator Light. Close Door And Wait 20 Minutes for Defrost Cycle
To Finish.
• Clean the Condenser.
2. Condensing unit fails to start - no hum. • Line Disconnected - Reconnect.
• Fuse - Replace Fuse.
• Overload Protection - Determine Reason & Correct, Replace If Necessary.
• Unit may need to be defrosted or has tripped off due to overload. Wait 30 minutes: Unit will self-reset.
3. Condensing unit fails to start - hums but
trips on overload protector.
• Improperly Wired - Check Wiring Against Diagram trips on overload protector.
• Low Voltage - Determine Reason & Correct.
• Starting Capacitor Defective - Determine Reason & Replace
• Relay Not Closing - Determine Reason & Correct, Replace If Necessary
• Compressor Motor Has Winding Open Or Shorted - Replace Compressor
• Internal Mechanical Trouble In Compressor - Replace Compressor
• Unit may need to be defrosted or has tripped off due to overload. Wait 30 minutes: Unit will self-reset.
4. Condensing unit starts, but fails to
switch.
• Improperly Wired - Check Wiring Against Diagram off of “start” winding.
• Low Voltage - Determine Reason & Correct.
• Relay Failing To Open - Determine Reason & Correct, Replace If Necessary.
• Run Capacitor Defective - Determine Reason & Replace.
• Excessively High Discharge Pressure - Check Discharge Shut-Off Valve, Or Insufcient Cooling On
Condenser.
• Compressor Motor Has Winding Open Or Shorted - Replace Compressor.
• Internal Mechanical Trouble In Compressor - Replace Compressor.
5. Condensing unit starts and runs, but
short cycles on overload protector.
•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.
• Low Voltage To Unit (or unbalanced if three phase) - Determine Reason & Correct.
• Overload Protector Defective - Check Current - Replace Protector.
• Run Capacitor Defective - Determine Reason & Replace.
• Excessive Discharge Pressure - Check Ventilation, Restrictions In Cooling Medium, Restrictions in
Refrigeration System.
• Suction Pressure Too High - Check For Possibility Of Misapplication. Use Stronger Unit.
• Compressor Too Hot (return gas) - Check Refrigerant Charge (x leak) Add If Necessary.
• Compressor Motor Has Winding Shorted - Replace Compressor.
6. Condensing unit runs but short cycles
on.
• Overload Protector - See #4 Above.
• Thermostat - Differential Set Too Close.
• High Pressure “Cut-Out” Due To:
a) Insufcient Air or Water Supply - Check Air or Water Supply To Condenser, Correct
b) Overcharge - Reduce Refrigerant Charge
c) Air In System - Purge
• Low Pressure “Cut-Out” Due To:
a) Liquid Line Solenoid Leaking - Replace
b) Compressor Valve Leak - Replace
c) Undercharge - Fix Leak, Add Refrigerant
d) Restriction In Expansion Device - Replace Device
10. SERVICE (continued)
10B - SPARE PARTS:
Spare or replacement parts may be obtained through a parts supplier or one of our authorized service agents. You may
obtain the name of a service agent from the MENU/SERVICE TAB on our website: www.traulsen.com
10C - WARRANTY REGISTRATION:
For your convenience, the warranties on your new Traulsen unit may be registered with us by one of two methods. Com-
pleting the enclosed warranty card (shipped with the unit), or by lling out the on-line warranty registration form located on
the MENU/SERVICE TAB on our website: www.traulsen.com
11. TROUBLESHOOTING GUIDE
11A. TROUBLESHOOTING GUIDE CHART:

RAC SERIES
Page 11
11. TROUBLESHOOTING GUIDE (continued)
11A. TROUBLESHOOTING GUIDE CHART:
PROBLEM POSSIBLE CAUSE
7. Condensing unit operates for prolonged. • Shortage Of Refrigerant - Fix Leak, Add Charge periods or continuously.
• Control Contacts Stuck or Frozen Closed - Clean Contacts or Replace Control.
• Excessive Heat Load Placed Into Cabinet - Allow Unit Sufcient Time For Removal Of Latent Heat.
• Prolonged or Too Frequent Door Openings - Plan or Organize Schedule To Correct Condition.
• Evaporator Coil Iced - Defrost.
• Restriction In Refrigeration System - Determine Locations & Remove.
• Dirty Condenser - Clean Condenser.
• Filter Dirty - Clean or Replace.
• Unit may need to be defrosted.
8. Start capacitor open or shorted or blown. • Relay Contacts Not Opening Properly - Clean Contacts or Replace Relay If Necessary.
• 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
• Excessive Short Cycling - Determine Reason For Short Cycling (see #5 above) And Correct.
• Improper Capacitor - Determine Correct Size.
9. Run capacitor open, shorted or blown. • Improper Capacitor - Determine Correct Size & Replace.
• Excessively High Line Voltage (110% of rated max) - Determine Reason & Correct.
10. Relay defective or burned out. • Incorrect Relay - Check & Replace.
• Incorrect Mounting Angle - Remount Relay In Correct Position.
• Line Voltage Too High or Too Low - Determine Reason & Correct.
• Excessive Short Cycling - Determine Reason (see #5 above) & Correct.
• Relay Being Inuenced By Loose Vibrating Mounting - Remount Rigidly.
• Incorrect Run Capacitor - Replace With Proper Capacitor.
11. Suction line frosted or sweating. • Overcharge of refrigerant - Correct Charge.
• Evaporator Fan Not Running - Determine Reason & Correct.
12. Liquid line frosted or sweating. • Restriction In Dehydrator or Strainer - Replace Part.
• Liquid Shut-Off (king valve) Partially Closed - Open Valve Fully.
13. Noisy condensing unit. • Loose Parts or Mounting - Find & Tighten.
• Tubing Rattle - Reform To Free Of Contact.
• Bent Fan Blade Causing Vibration - Replace Blade.
• Fan Motor Bearing Worn - Replace Motor.
14. Error Message: • “Err1” = Sensor 1 Failure
• “Err2” = Conguration Connector Error
• “Err3” = Sensor 2 Failure
• “Err4” = Under Temperature
• “Err5” = Over Temperature
• “Err6” = Key Shorted
• “Err7” = Door Switch
• “Err8” = EEPROM Possible Corruption.
15. Error Message: “End” displays. 1. Unit surpassed open door maximum time allowance. Unit shut off.
11B. HELPFUL HINTS FOR TOP PERFORMANCE:
1. Load cabinet from bottom to top.
2. Push pans and trays all the way back to rear wall.
3. Unload cabinet from top to bottom and keep empty trays in position for best performance.
4. Defrost unit daily or after each prolonged usage.

12. WIRING DIAGRAM
RAC SERIES
Page 12

13. WARRANTIES
RAC SERIES
Page 13
STANDARD DOMESTIC WARRANTY
TRAULSEN 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 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 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 re, 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 PUR-
POSE 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 RE-
SPECT 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 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 will reimburse the purchaser for the replacement of any part of said equipment (ex-
cluding 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.
W
ill 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.

NOTES:

NOTES:

Quality Refrigeration
Form Number: TR36045 | Part Number: 375-70001-00 | Revision Date: 08-02-17
Traulsen © All Rights Reserved
4401 Blue Mound Road Fort Worth, Texas 76106 (USA)
Phone: [phone] | Service Fax: [phone] | E-mail: [email protected] | Website: traulsen.com