Ultrafryer DTMR Service Manual

DEFAULT-TO-MANUAL-RESTART CONTROL

Operation Instructions

.

302 Spencer Lane

(800) 525 - 8130

PN 30A066 rev Jan2007 1

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P.O. Box 5369 . San Antonio, Texas 78201

.

(210) 731 - 5000

.

Fax: (210) 731 - 5099

PREFACE

This manual was written and published by the Technical Publications Department, Ultrafryer Systems, for use
by store personnel who operate an Ultrafryer Fryer equipped with the Default-To-Manual-Restart (DTMR)
Control. This manual complements and should be used in conjunction with the applicable Ultrafryer Fryer
Operations Manual provided with each Ultrafryer Fryer.

TECHNICAL PUBLICATIONS DEPARTMENT
ULTRAFRYER SYSTEMS
302 Spencer Lane
San Antonio, Texas 78201
1-800-545-9189 Ext. 5007

NOTE: This Manual is applicable to both Electric and Gas Fryers equipped with a Default-To-Manual-Restart Control.

30A066 revised Jan 2007

PN 30A066 rev Jan2007 2

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TABLE OF CONTENTS

I.. INTRODUCTION
Safety 4
Safe Cleaning Procedure 4

II. DEFAULT-TO-MANUAL-RESTART-CONTROL
General 5
Electronic Thermostat 5
Default-To-Manual-Restart (DTMR) Control Panel 5

III. DTMR TEST OPERATION
Electric Fryer 6
Gas Fryer 7

IV. DTMR EQUIPPED FRYER OPERATION
Electric Fryer 8
Gas Fryer 8

V. Electronic Thermostat CALIBRATION 10

VI. SERVICE AND PARTS
Technical Assistance 12
Ordering Information 12
Parts Identication 12

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I. INTRODUCTION

The Default-To-Manual-Restart (DTMR) Control is intended to reduce the possibility of “operator errors”
that can result in DRY FIRING a fryer causing shortening to be scorched, heat mechanism damage, and/or
a vat re.

A. SAFETY - The DTMR operates on 120 volt single phase electrical power, and like other electrical
equipment, should not be operated with wet hands or while standing in water. Water should NEVER
be sprayed on or at the DTMR, as there is a danger of electrical shock and / or serious damage to its
electrical circuitry. Should the DTMR accidentally be sprayed with water, 1) IMMEDIATELY turn the
Power OFF at the Main Power Switch and 2) IMMEDIATELY contact a qualied service agent to
check the DTMR. The DTMR is located in close proximity to hot liquid shortening and care must be
taken to avoid serious burns. The oor in front of, and area around the fryer should be kept clean and
dry. Whenever anything is put into a cooking vat, care should be taken to not splash the hot shortening.
Products should always be “placed” into the shortening, not thrown.

B. SAFE CLEANING PROCEDURE - Before performing any cleaning routine, electrical power to the
DTMR should be turned OFF at the Main Power Switch. A SLIGHTLY dampened cloth may then be
used to clean any debris from the face of the DTMR. DO NOT USE any cleaner or de-greaser solvent
as they may mar the face or damage the internal circuitry of the control. Any questions regarding cor­ rect cleaning procedures should be directed to the Customer Service Department at 1-800-525-8130.

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II. DEFAULT-TO-MANUAL-RESTART CONTROL

A. GENERAL

The Default-to-Manual-Restart (DTMR) Control along with an Electronic Thermostat is connected to a
fryer’s electrical system to control operation of the fryer. The DTMR contains a Default-to-Off
circuit that will DISABLE the fryer anytime the Drain Valve is OPEN, and a Default-to-Melt circuit
that will automatically place the fryer in a
SHORTENING MELT MODE to gradually
and safely heat shortening each time the fryer’s
Toggle ON/OFF Switch is turned ON.

NOTE: Some older stores may be equipped with a Fenwal
Temperature Control in lieu of an Electric Thermostat.

B. ELECTRONIC THERMOSTAT
The Electronic Thermostat has a temperature

range from 200ºF (93ºC) to 400ºF (204ºC)
and will accurately maintain a pre-set short­ ening cook temperature within ± 2º of the
pre-set temperature.

C. DEFAULT-TO-MANUAL-RESTART CONTROL PANEL

1. BLUE READY TO START LAMP - When lit

indicates the fryer’s Toggle ON/OFF switch
is in the ON position, the Drain Valve is
CLOSED and the fryer is ready to be
placed in operation.

2. START BUTTON - When the button is
momentarily pressed, it places the fryer in
operation.

3. RED STARTED LAMP - When lit indicates the
START BUTTON has been pressed, placing
the fryer in operation.

4. AMBER MELT MODE LAMP - When lit indicates the fryer is in the MELT MODE and that the timer
in the DTMR Default-to-Melt circuit is turning the fryer’s heat mechanism ON and OFF, as follows,
to gradually and safely heat the shortening.

TYPE FRYER

Electric 4 seconds 36 seconds

Gas 7 seconds 28 seconds

ON OFF

TIME

5. EXIT MELT BUTTON - When this button is momentarily pressed, the TIMER in the DTMR’s
Default-to-Melt circuit will switch to the FULL-ON position allowing the Electronic Thermostat

to heat shortening to its PRE-SET temperature.

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III DTMR TEST OPERATION

A. ELECTRIC FRYER

TO TEST OPERATE an Ultrafryer Electric Fryer equipped with a Default-To-Manual-Restart

(DTMR) control:

1. Turn the Toggle ON/OFF Power Switch to the OFF
Position.

2. Fill the fryer vat with hot or cold water to the middle
of the “E ←” in the word LEVEL of the applicable
shortening level mark on the rear of the vat.

3. ENSURE that the Exhaust Fan is ON.

4. Perform the following steps, in the order listed:

ITEM ACTION DTMR CONDITION

ENSURE the drain valve lever is in the CLOSED
UP position and that water is at the proper level;

1

then turn the Toggle ON/OFF switch to the ON
position.

A. The AMBER power indicator will LIGHT.
B. BLUE READY TO START lamp will LIGHT.

CAUTION: PRIOR TO PROCEEDING TO STEP 2 VISUALLY CHECK THAT THE HEAT MECHANISM IS

COVERED WITH AT LEAST 2” (51 mm) OF WATER.

A. RED STARTED lamp and AMBER MELT
MODE lamp will light.

Press, then release the momentary START but-

2

ton

B. BLUE READY TO START lamp will turn OFF.
C. A TIMER in the Default-To-Melt electrical
circuit will begin cycling the fryer heat mechanism
ON for four (4) seconds and OFF for 36 seconds
to safely heat the water.

CAUTION: PRIOR TO PROCEEDING TO STEP 3, VISUALLY CHECK THAT THE WATER

COMPLETELY COVERS THE HEAT MECHANISM.

A. AMBER MELT MODE lamp will turn OFF,
RED STARTED lamp will remain lit.

Press, then release the momentary EXIT MELT

3

button.

Turn the Toggle ON/OFF switch to the OFF
position. After the water inside the fryer and

4

the metal surfaces on the fryer have COOLED,
drain the water into a oor drain.

B. The TIMER in the Default-To-Melt circuit will
switch to the FULL ON position allowing the

Electronic Thermostat to heat water to its pre-set
temperature.

A. The AMBER power indicator lamp will turn OFF.
B. The RED STARTED lamp will turn OFF.

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B. GAS FRYER

TO TEST OPERATE an Ultrafryer Gas Fryer equipped with a Default-To-Manual-Restart

(DTMR) control:

1. Turn the Toggle ON/OFF Power Switch to the OFF Position.

2. Fill the fryer vat with hot or cold water to the middle of the “E ←” in the word LEVEL of the
applicable shortening level mark on the rear of the vat.

3. Turn the MANUAL gas valve to the OFF position
and wait FIVE (5) minutes for any accumulated gas
to disperse.

4. ENSURE the MAIN gas shut-off valve is in the
ON position, and that the EXHAUST FAN is ON.

5. Turn the MANUAL gas valve to the ON position.

6. Perform the following steps, in the order listed:

ITEM ACTION DTMR CONDITION

ENSURE the drain valve lever is in the CLOSED
UP position and that water is at the proper level;

1

then turn the Toggle ON/OFF switch to the ON
position.

CAUTION: PRIOR TO PROCEEDING TO STEP 2 VISUALLY CHECK THAT THE HEAT MECHANISM IS

COVERED WITH AT LEAST 2” (51 mm) OF WATER.

Press, then release the momentary START but-

2

ton

A. The AMBER power indicator will LIGHT.
B. BLUE READY TO START lamp will LIGHT.

A. RED STARTED lamp and AMBER MELT
MODE lamp will light.
B. BLUE READY TO START lamp will turn OFF.
C. A TIMER in the Default-To-Melt electrical
circuit will begin cycling the fryer heat mechanism
ON for seven (7) seconds and OFF for 28 seconds
to safely heat the water.

CAUTION: PRIOR TO PROCEEDING TO STEP 3, VISUALLY CHECK THAT THE WATER

COMPLETELY COVERS THE HEAT MECHANISM.

A. AMBER MELT MODE lamp will turn OFF,
RED STARTED lamp will remain lit.

Press, then release the momentary EXIT MELT

3

button.

Turn the Toggle ON/OFF switch to the OFF
position. After the water inside the fryer and

4

the metal surfaces on the fryer have COOLED,
drain the water into a oor drain.

B. The TIMER in the Default-To-Melt circuit will
switch to the FULL ON position allowing the
Electronic Thermostat to heat water to its pre-set
temperature.

A. The AMBER power indicator lamp will turn OFF.
B. The RED STARTED lamp will turn OFF.

PN 30A066 rev Jan2007 7

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IV DTMR EQUIPPED FRYER OPERATION

A. ELECTRIC FRYER - Safely operate an Ultrafryer Electric Fryer equipped with the DTMR as follows:

ITEM ACTION DTMR CONDITION

ENSURE the drain valve lever is in the CLOSED
UP position and that shortening is at the proper

1

level; then turn the Toggle ON/OFF switch to the

ON position.

CAUTION: PRIOR TO PROCEEDING TO STEP 2 VISUALLY CHECK THAT THE HEAT MECHANISM IS

COVERED WITH AT LEAST 2” (51 mm) OF SHORTENING.

Press, then release the momentary START but-

2

ton.

CAUTION: PRIOR TO PROCEEDING TO STEP 3, VISUALLY CHECK THAT SHORTENING

COMPLETELY COVERS THE HEAT MECHANISM.

Press, then release the momentary EXIT MELT

3

button.

When the fryer’s RED indicator lamp turns

4

OFF, indicating the pre-set temperature has
been reached, initiate a cook cycle.

A. The AMBER power indicator will LIGHT.
B. BLUE READY TO START lamp will
LIGHT.

A. RED STARTED lamp and AMBER MELT
MODE lamp will light.
B. BLUE READY TO START lamp will turn OFF.
C. A TIMER in the Default-To-Melt electrical
circuit will begin cycling the fryer heat mechanism
ON for four (4) seconds and OFF for 36 seconds
to safely heat the shortening

A. AMBER MELT MODE lamp will turn OFF,
RED STARTED lamp will remain lit.
B. The TIMER in the Default-To-Melt circuit will
switch to the FULL ON position allowing the

Electronic Thermostat to heat shortening to its
pre-set temperature.

B. GAS FRYER - Safely operate an Ultrafryer Gas Fryer equipped with the DTMR as follows:

ITEM ACTION DTMR CONDITION

ENSURE the drain valve lever is in the CLOSED
UP position and that shortening is at the proper

1

level; then turn the Toggle ON/OFF switch to the

ON position.

CAUTION: PRIOR TO PROCEEDING TO STEP 2 VISUALLY CHECK THAT THE HEAT MECHANISM IS

COVERED WITH AT LEAST 2” (51 mm) OF SHORTENING.

Press, then release the momentary START but-

2

ton.

CAUTION: PRIOR TO PROCEEDING TO STEP 3, VISUALLY CHECK THAT THE SHORTENING

COMPLETELY COVERS THE HEAT MECHANISM.

Press, then release the momentary EXIT MELT

3

button.

When the fryer’s RED indicator lamp turns

4

OFF, indicating the pre-set temperature has
been reached, initiate a cook cycle.

A. The AMBER power indicator will LIGHT.
B. BLUE READY TO START lamp will
LIGHT.

A. RED STARTED lamp and AMBER MELT
MODE lamp will light.
B. BLUE READY TO START lamp will turn OFF.
C. A TIMER in the Default-To-Melt electrical
circuit will begin cycling the fryer heat mechanism
ON for seven (7) seconds and OFF for 28 seconds
to safely heat the shortening.

A. AMBER MELT MODE lamp will turn OFF,
RED STARTED lamp will remain lit.
B. The TIMER in the Default-To-Melt circuit will
switch to the FULL ON position allowing the

Electronic Thermostat to heat shortening to its
pre-set temperature.

PN 30A066 rev Jan2007 8

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ELECTRONIC THERMOSTAT CALIBRATION

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V Electronic Thermostat CALIBRATION - The Electronic Thermostat in all fryer congurations are equipped with
a Dial and Knob and should be checked and calibrated when necessary as follows:

A. ENSURE electrical power and, if applicable, gas to the fryer has been turned OFF.

B. CAREFULLY drain sufcient shortening from the fryer to LOWER the shortening about 4” (102 mm) beneath
the Electronic Thermostat sensing probe.

C. After the sensing probe has COOLED, loop the bead of an ACCURATE digital test thermometer temperature
probe around the sensing element; then connect the probe to the thermometer.

D. Replace shortening drained in step B and ENSURE it is level with the shortening level mark on the rear of the
vat; then turn the power and, if applicable, gas to the fryer ON.

E. Set the KNOB of the Electronic Thermostat to the CENTER (300) of the dial and periodically STIR the shortening
in a COUNTER-CLOCKWISE (CCW) direction with a long handle skimmer to pull congealed shortening
UPWARD from the Cold Zone area.

F. When shortening has reached the set temperature and the RED indicator lamp on the fryer has turned OFF,
allow the Electronic Thermostat to cycle ON and OFF about ve (5) times to stablize the system.

G. After the shortening temperature has stablized, record the temperature reading of the TEST THERMOMETER
immediately after the RED indicator lamp and the fryer turns OFF.

H. CAREFULLY loosen the set screw on the Electronic Thermostat KNOB without turning the thermostat potentiometer,
set the thermostat knob pointer to the temperature recorded by the test thermometer; then tighten the set screw on the
thermostat knob taking care not to turn the thermostat’s potentiometer.

I. Repeat steps A and B above, remove the test thermometer temperature probe from the Electronic Thermostat sensing
element; then repeat step D to return the fryer to normal operation.

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SERVICE AND PARTS

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1. TECHNICAL ASSISTANCE - Contact an authorized service agent or the Customer Service Department, Ulftfryer
Systems at 1-800-525-8130 for technical assistance.

2. ORDERING INFORMATION:

A. REPLACEMENT PARTS - Provide the following information when ordering replacement parts by phone,

fax or mail:

Your company name and phone number
Your company purchase order number
Bill-to address
Ship-to address
Quantity desired
Part number and description of the desired-item
Your name or signature of authorized-buyer
Phone in order to:
FAX order to: 1-210-731-5099
Mail order to: Ultrafryer Systems
Order Entry Ofce
P.O. Box 5369
San Antonio, TX 78201
E-Mail your order to: [e-mail]

1-888-331-5031

B. TERMS - Net 30 days for customers on open accounts. Past due balances will be charged 1 1/2% per
month (18% per annum) until full balance is paid.

C. DAMAGES - Ultrafryer Systems is not responsible for damage occurring in transit. All deliveries must be
inspected for damage to shipping containers prior to departure of the delivering carrier. Any damage must be
notated on the receiving document to facilitate ling of freight claims. Carriers must be notied immediately
and freight inspections must be requested from the carrier. Ultrafryer Systems can and will gladly assist you
in preparing and processing of the necessary claims only if proper notication has been accomplished on the
carrier delivery document. Damaged equipment and or containers must be available for the claims inspector
to inspect.

D. RETURNS - Ultrafryer Systems cannot guarantee credit for items returned without proper authorization. All
returns must have prior Ultrafryer Systems Customer Service or Warranty department approval. An assigned
number will be issued by the approval authority. Please print the assigned number on all returned packages
and corresponding paperwork. Returned goods are subject to a l5% restocking charge. Ultrafryer Systems is
not responsible for freight charges on returned goods unless authorized by Customer Service and or Warranty
personnel. Ultrafryer Systems does not receive freight collect or C.O.D. shipments.

3. PARTS IDENTIFICATION - Locate the part on the following sketches and note the index number i.e, 1, 2, etc;
then obtain the part number and description for that index number beneath the sketch. Use that part number
when ordering a replacement part.

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A. DTMR CONTROL FOR FRYERS EQUIPPED WITH A FENWAL THERMOSTAT PN 18-233

FENWAL THERMOSTAT
DIAL

FRYER

DESCRIPTION

Model Par-2 Gas Fryer 12A259

Model Par-3 Gas Fryer 12A798

Model ZRT Gas Fryer 12A824

Model EU or Countertop Electric Fryer 12A265

Model ZRT Electric Fryer 12B051

DTMR

PN

B. DTMR CONTROL FOR FRYERS EQUIPPED WITH AN ELECTRONIC

THERMOSTAT PN 12B077

FRYER

DESCRIPTION

Model Par-2 Gas Fryer 12B057

Model Par-3 Gas Fryer 12B013

Model ZRT Gas Fryer 12B014

Model EU or Countertop Electric Fryer 12B070

Model ZRT Electric Fryer 12B069

DTMR

PN

ELECTRONIC THERMOSTAT
DIAL

PN 30A066 rev Jan2007 13

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

















ITEM DESCRIPTION PN

1 Toggle ON/OFF Switch Guard 18-129

2 Electronic P14 Thermostat 18A058

3 Electronic Thermostat Face Plate 18A070

4 Temperature Probe 18A276

5 Toggle ON/Off Switch 18A287

*6 Electronic P14 Thermostat Bracket 19B174

7 Electronic Thermostat Knob 22A169

8 125 Volt 3 Watt Snaplight w/Red Lens 23-362

9 Toggle ON/OFF Switch Protective Boot 23-402

10 125 Volt 3 Watt Snaplight w/Amber Lens 23A056

* Not Shown

PN 30A066 rev Jan2007 14

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