Traulsen TU048QC User Manual

Quality Refrigeration

OWNER’S MANUAL

Instructions for the installation, operation

and maintenance of Traulsen:

Full Size Undercounter Quick Chiller

TU048QC Model

* Traulsen’s quick chillers are solely intended for quick chilling, and not for use as holding cabinet.

This Traulsen unit is built to our highest quality standards. We build our equipment 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.

All Traulsen units are placed on a permanent record le 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 afxed to the unit. Should you need service,
call us on our toll free number, 800-825-8220 between 7:30 am - 4:30 pm CST, Monday thru Friday. You may also log onto
www.traulsen.com for further information. 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:

FORM NUMBER TR35906 (REV. 06-26-15) P/N 375-60305-00

TABLE OF CONTENTS

I. THE SERIAL TAG Page 1
II. RECEIPT INSPECTION Page 2
III. INSTALLATION
a-Location Page 2
b-Packaging Page 2
c-Adjusting the Casters Page 2
d-Cord & Plug Page 2
e-Power Supply Page 2
IV. QUICK CHILLER OPERATION Page 3
V. CARE & MAINTENANCE
a-Cleaning The Condenser/Filter Page 3
b-Replacing The Gaskets Page 4
c-Cleaning The Cabinet Surface Page 4
VI. DOOR Page 4
VII. MICROPROCESSOR CONTROL
a-Control Features Page 5
b-Alarm Explanations Page 6
c-Control Panel Diagram Page 7
d-Notes To The User Page 7

e-Enter The Service Access Page 8
f-Service Parameters Page 9
g-Adjusting Thermostat Set Point High Page 9
h-Adjusting Thermostat Set Point Low Page 10
i-Changing The Temperature Scale Page 10
j-Setting The 24-Hour Clock Page 11
k-Setting The Date Page 12
l-Setting Daylight Savings Time Page 12
m-Starting A Manual Defrost Page 13
n-Setting Defrost Lockouts Page 14
o-Adjusting The Door/Drawer Perimeter Heaters Page 15
p-Adjusting The Room Temperature Offset Page 15
q-Setting The Audible Alarm Style Page 16
r-Viewing Sensor Temperatures Page 16
VIII. WIRING DIAGRAM Page 17
IX. SERVICE ASSISTANCE
a-Service Information Page 18
b-Spare Parts Information Page 18
c-Warranty Registration Page 18
X. WARRANTIES Page 19
XI. SERVICE PARTS LIST Page 20

FORT WORTH, TX.

SERIAL MODEL
VOLTS Hz PH

TOTAL CURRENT AMPS
MINIMUM CIRCUIT AMPS
MAXIMUM OVERCURRENT PROTECTION AMPS
LIGHTS WATTS
HEATERS AMPS

REFRIGERANT TYPE OZ
DESIGN PRESSURE HIGH LOW

REFRIGERANT TYPE OZ
DESIGN PRESSURE HIGH LOW

370-60294-00 REV (A)

I. THE SERIAL TAG

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. This tag is located in the right interior com­partment on all Full Size Undercounter Quick Chiller
models.

READING THE SERIAL TAG

• Serial = The permanent ID# of your Traulsen unit

• Model = The model # of your Traulsen unit

• Volts = Voltage

• Hz = Cycle

• PH = Phase

• Total Current = Maximum amp draw

• Minimum Circuit = Minimum circuit ampacity

• Lights = Light wattage

• Heaters = Heater amperage (Hot Food units only)

• Refrigerant = Refrigerant type used

• Design Pressure = High & low side operating
pressures and refrigerant charge

• Agency Labels = Designates agency listings

-1-

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.

You should carefully inspect your 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 the damage. A freight claim should be
led immediately. If damage is subsequently noted during
or immediately after installation, contact our customer care
team to le a freight claim. There is a fteen (15) day limit
to le freight damage with the carrier. Under no condition
may a damaged unit be returned to Traulsen without rst
obtaining written permission (return authorization). You

may contact Hobart/Traulsen customer care at 800­333-7447 to request a return or le a claim.

III. INSTALLATION

III. a-LOCATION:

Select a proper location for your unit, away from extreme
heat or cold. Allow enough clearance between the unit
and the side wall in order to make use of the door stay
open feature at 1200 (self-closing feature operates up to

900). The door must be able to open a minimum of 900 in
order to make use of the maximum clear door width. Al­low a minimum of 12 inches (high) above the cabinet for
proper air circulation.

III. c-INSTALLING/ADJUSTING LEGS OR
CASTERS:

To install legs or casters, slide leg or caster into the caster chan­nel from the side of the unit without the refrigeration system.

To adjust the legs or casters, loosen the two bolts and move
leg or caster to desired location, spacing between leg or caster
not to exceed 39 inches. Leg or caster on each end of the unit
can not exceed 8 inches from the end of the cabinet.

NOTE: Traulsen recommends to position legs or casters under
the mullion when possible.

CASTER CHANNEL

BOLT

CASTER PLATE

III. d-CORD & PLUG:

All self-contained models are shipped standard with a NEMA
5-15P plug and 9 foot cord . Select only a dedicated electrical
outlet for power source.

III. b-PACKAGING:

Your Traulsen unit is shipped from the factory bolted to a
sturdy wooden pallet in stretch wrapped material.

Most exterior stainless steel surfaces have a protective
vinyl covering to prevent scratching during manufactur­ing, shipping and installation. After the unit is installed in
place of application peel, remove and discard the covering
from all surfaces.

To remove the wooden pallet, rst if at all possible, we
suggest that the cabinet remain bolted to the pallet dur­ing all transportation to the point of nal installation. The
bolts can then be removed with a 1/2” socket wrench.
Avoid laying the unit on its front, side or back for removal
of the pallet.

NOTE: Traulsen does not recommend laying the unit on
its front, side or back. If you must, please allow the unit to
remain in an upright position for 24 hours before plugging it
in so that the compressor oils and refrigerant may settle.

Do not cut or remove the round grounding
prong from the plug. Do not use an extension cord.

III. e-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, see
page 1). Make connections in accordance with local electrical
codes. Use qualied electricians.

Use of a separate, dedicated 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).

-2-

IV. OPERATION

V. CARE & MAINTENANCE

IV. a-QUICK CHILLER OPERATION:

The Quick Chiller does not require manual defrosting. During
normal operation, a Quick Chiller continuously circulates below
freezing cabinet air through the coil. The coil requires a periodic
defrosting for proper operation. This is accomplished by an
automatic, time activated, temperature/time terminated, defrost
program, utilizing hot gas from the refrigeration system. The
controller is preset at the factory for six equally spaced defrost
cycles within each 24-hour period. The control will read “dEF”
and the green snowake icon will be illuminated.

SNOWFLAKE ICON

INTELA-TRAUL

°F °C

FREEZER

At the start of a Quick Chiller defrost cycle, the compressor,
condenser fan and evaporator fan shut off. The hot gas relay
will be energized, this will energize the hot gas solenoid valve
thru the normally open contacts and the condenser fan circuit
will be de-energized thru the (normally closed contacts), and the
compressor will restart. When the evaporator coil sensor reaches
400 F the coil is fully defrosted or if the maximum time of defrost
duration (20 minutes) is reached (which ever comes rst) then
the defrost hot gas relay is de-energized. The condenser fan
restarts and the hot gas solenoid valve closes, The compressor
system returns to the cooling mode. Total refrigeration system
operation is then resumed (green snowake icon goes out) and
the display will show def for an additional 10 minutes then return
to reading the inside cabinet temperature. The evaporator fan(s)
are delayed from starting at the termination of the defrost cycle
and will automatically resume by time or temp delay (5 minutes
or 300 F coil sensor temperature, whichever comes rst ).

SET

V. a-CLEANING THE CONDENSER/FILTER:

The most important thing you can do to insure a long,
reliable service life for your Traulsen is to regularly clean
the condenser coil and lter.

The microprocessor control will notify you through a
“CLN-FIL” message when the condensing temperature
of the refrigerator reaches 140 degrees F or greater. If
the condensing temperature reaches 160 degrees F
the compressor will automatically turn off . When the
temperature drops below 140 degrees F the compressor
will restart and when the temperature drops below 120
degrees F the alarm will reset.

Disconnect electrical power supply

before cleaning any parts of the unit.

To clean the condenser/lter, rst disconnect electrical
power to the cabinet and remove the front louver as­sembly. To do so, place hands under the louver panel
and pull out and up to get louver panel off bracket of the
unit. (See diagram below, image shown with optional
drawer(s).

During Quick Chiller defrost operation, heat is conned to the coil
enclosure to prevent any signicant rise in temperature within the
food zone. The fan delay control function upon termination of a
defrost cycle is two-fold. First, to prevent blowing warm air into
the food storage area. Second, to prevent any condensation on
the defrost coil from being blown into the food storage area.

The microprocessor control is set from the factory to terminated
defrost at 20 minutes in the event of sensor failure. This setting
should never be tampered with, without rst consulting Traulsen’s
Technical Service department at 800-825-8220.

-3-

Proceed to vacuum or brush any dirt, lint or dust
from the nned condenser coil/lter, the compressor and
other cooling system parts. If signicant dirt is clogging
the condenser ns or lter, use compressed air to blow
this clear. To replace the louver assembly reverse the
process.

V. CARE & MAINTENANCE (cont’d) VI. DOOR

V. b -REPLACING THE GASKETS:

To remove the gasket to be replaced, grasp it rmly by
one corner and pull it out. Before attempting to install
a new gasket, both the unit and the gasket itself must
be at room temperature. Insert the four corners rst by
using a rubber mallet (or hammer with a block of wood).
After the corners are properly inserted, work your way
towards the center from both ends by gently hitting with
a mallet until the gasket is completely seated in place
(see gure below for proper gasket placement).

NOTE: The gasket may appear too large, but if it is in­stalled as indicated above it will slip into place.

SIDE DOOR PANEL

VERTICAL GASKET
RETAINER

GASKET ASSEMBLY

VI. a-DOOR:

Your Traulsen Full Size Undercounter Quick Chiller model door
is eld re-hingeable. If re-hinging is required, please contact our
in-house service department at 800-825-8220 for instructions.

V. c-CLEANING THE CABINET SURFACES:

Disconnect electrical power supply

before cleaning any parts of the unit.

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, such
as bleach, 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 or spills, use baking soda and water
(mixed to a 1 tablespoon baking soda to 1 pint water
ratio).

A stainless steel polish is recommended for shining of
unit.

-4-

VII. MICROPROCESSOR CONTROL

Your new cabinet is equipped with a state-of-the-art microprocessor control, which precisely regulates operation and
provides alarms when problems occur. It is supplied from the factory completely ready for use and requires no adjust­ments, but without the audible alarms activated. See pages 6 thru 16 for more information on the microprocessor
control.

INTELA-TRAUL

°F °C

FREEZER

VII. a-CONTROL FEATURES:

1) Internal Time Clock

• Eliminates external defrost time clock.

• Defrost cycle can be quickly adjusted to suit individual location and use.

• Must be set at power-up. (See page 11, “Setting the 24-Hour Clock”)

• Will automatically update for Daylight Savings Time.

2) Water Resistant Housing

The face of the control is water resistant to provide for protection during cleaning.

SET

MICROPROCESSOR CONTROL

3) Parameter/Service Levels

• See “Customer Access Code on Page 8 / Service Parameters” on Page 9.

4) Defrost Lockouts

See “Setting Defrost Lockouts” on page 14.
Customers can set up to 4 different defrost lockout periods. The lockout prevents the unit from going into a defrost
cycle during peak kitchen use. Note: The 24-hour clock must be set for this feature to operate correctly.

5) Communication Ability

A NAFEM Data Protocol (NDP) compliant RS-485 serial communications port is available to interface with data collec­tion software (by others). All microprocessor control equipped models are capable of communicating within a NAFEM

Data Protocol network if provided with an optional Gateway Hub (available from Traulsen). The actual communications
software is available from a number of third party software vendors.

6) Anti-Condensate Door Perimeter Heater Control

The “No-Sweat” feature is an energy savings system that allows the customer to adjust the percent of time for the door/
drawer heater to be “On” as needed for the prevailing ambient conditions (from 0 - 100% of the time each day). It is
used to prevent condensation from forming around the perimeter of the drawers. The factory default setting is 100%.
Adjust this set point down to a point just before condensation forms to save energy.

7) Alarms

See the following pages for explanations

• High Cabinet Air Temperature

• Low Cabinet Air Temperature

• Loss Of Power

• Sensor Failure

• Clean Condenser

8) Display Features

• 3-Digit LED Display

• Defrost in Progress Icon

• Fahrenheit or Celsius Temperature Scale In Use

-5-

VII. MICROPROCESSOR CONTROL (cont’d)

VII. b-ALARM EXPLANATIONS:

NOTE: Explanation of alarms assume the audible alarm style is set at a 3-second burst or a continuous audible alarm.

References to the audible alarm do not apply if the audible alarm style is set to OFF (Refer to page 16 for setting the
audible alarm style).

High Cabinet Air Temperature: The audible alarm will sound and the display will read HI
CAb when the temperature inside the cabinet rises above a pre-programmed limit. The limit is
determined by the type of unit being operated (i.e.: refrigerator/freezer). To turn off the audible
alarm, press the alarm cancel button. The visual alarm text will continue to display until the
cabinet air temperature falls below the limit. If the temperature does not fall below the limit
within 5 minutes, the audible alarm* will sound again and an additional Call Service message
will display.

Possible Causes:

• Doors open for extended periods of time.

• Large amounts of hot product placed inside the cabinet.

• Condenser coil dirty.

• Cooling Compressor Failure. Call Service.

• Refrigeration Problems.

Low Cabinet Air Temperature: The audible alarm will sound and the display will read Lo
Cab when the temperature inside the cabinet falls below a pre-programmed limit. The limit is
determined by the type of unit being operated (i.e.: refrigerator/ freezer). To turn off the audible
alarm, press the alarm cancel button. The visual alarm text will continue to display until the
cabinet air temperature rises above the limit. If the temperature does not rise above the limit
within 5 minutes, the audible alarm will sound again and an additional Call Service message
will display.

Possible Causes:

• No product in unit.

• Failed sensors.

• Stuck Evaporator Relay.

Loss Of Power: The audible alarm will sound and the display will read ELE LOS, when the
unit regains power after an outage. To turn off the audible alarm and/or clear the visual text,
press the alarm cancel button.

Condenser Clean: The audible alarm will sound and the display will read “Clean Filter” when
discharge temperatures exceeds 140 degrees. As the load on the condenser decreases, the
alarm will turn off by itself. As the temperature on the condenser continue to rise, the audible
alarm will return until the problem has been eliminated.

NOTE: If discharge temperature rises above 1600F the compressor & condenser fan motor
will be switched off until the discharge temp falls below 1400F

Sensor Failures:

The audible alarm will sound and the display will read CAB SEN, COL SEN or DIS SEN when
that particular sensor has failed to operate. To turn off the audible alarm, press the alarm
cancel function of the sensor, the audible alarm will sound again in either 5 minutes or 24
hours.

NOTE: Test sensor in ice water.

-6-

VII. MICROPROCESSOR CONTROL (cont’d)

VII. c-CONTROL PANEL DIAGRAM:

0

F LED & 0C LED

°F °C

FREEZER

INTELA-TRAUL

LED DISPLAY

GREEN SNOWFLAKE ICON

SET BUTTON

SET

UP BUTTON &
DOWN BUTTON

RED ALARM LIGHT

ALARM CANCEL BUTTON

VII. d-NOTES TO THE USER:

You only have 20-30 seconds between button pushes. If you take longer than 30 seconds, the controller will revert back
to displaying the cabinet temperature. If you enter the wrong security code, the controller will revert back to displaying
the cabinet temperature. You can exit the parameters at any time by pressing the alarm cancel button or by waiting 20-30

seconds.

-7-