Cres Cor FL-2273 Installation Manual

5925 Heisley Road • Mentor, OH 44060-1833

INSTALLATION, OPERATION and MAINTENANCE

MANUAL for Cres Cor

ELECTRIC ROLL-IN RETHERM OVENS

RR-1332 Series

Retherm

Ovens

Rev. 3 (12/08) Page 1 of 11

FL-2273

Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com

Retherm

Ovens

Rev. 3 12/08) Page 2 of 11

FL-2273

5925 Heisley Road • Mentor, OH 44060-1833

TABLE OF CONTENTS

SUBJECT PAGE

INSTALLATION INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4, 5

MAINTENANCE INSTRUCTIONS

How to Clean the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Trouble Shooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Illustrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Optional Product Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

SERVICE POLICY and AGENCY LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .FL-1400

NOTICE:

THIS EQUIPMENT IS INTENDED FOR STORAGE AND DISPLAY

OF PACKAGED PRODUCTS ONLY.

WARNING

RISK OF FIRE OR ELECTRIC SHOCK

DO NOT OPEN

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,

DO NOT REMOVE COVER (OR BACK)

NO USER-SERVICEABLE PARTS INSIDE

REPAIR SHOULD BE DONE BY AUTHORIZED SERVICE

PERSONNEL ONLY

Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com

Rev. 3 (12/08) Page 3 of 11

5925 Heisley Road • Mentor, OH 44060-1833

INSTALLATION INSTRUCTIONS

VENTING YOUR OVEN:

The purpose of ventilating hoods is to direct and 1.
capture smoke, grease-laden vapors, heat, odors,
or fumes.

Low temperature equipment (maximum 2.
temperature 250°F/121°C) does not produce heat,
odors, fumes, grease-laden vapors or smoke and
is not required to be vented.

HOT UNIT SPECIFICATIONS:

All units use three (3) elements (2670 watts each). All units are rated 8200 watts.

MODEL NOS.

ELECTRICAL SPECS

(AC SERVICE)

Volts Ph Hz. Amps Volts Amps Ph Wire Volts NEMA

ELEC. LOAD POWER SUPPLY REQUIREMENT

Most jurisdictions consider our low-temperature 3.
ovens (maximum temperature is 350°F/177°C) as
low-heat appliances not requiring vent hoods.

Installation must conform with local codes. The 4.
authority having jurisdiction of enforcement of
the codes will have the responsibility for making
interpretations of the rules.

Retherm

Ovens

FL-2273

HU 18-671-190-MP 208 1 60 39 208 50 1 3 208 6-50P
HU 18-671-191-MP 240 1 60 34 240 50 1 3 240 6-50P
HU 18-671-192-MP 208 3 60 23 208 30 3 4 208 L15-30P
HU 18-671-193-MP 240 3 60 20 240 30 3 4 240 L15-30P

All models are designed for AC Service.

HOW TO INSTALL CABINETS:

Remove all packing material from inside and outside 1.
of cabinet.

Position cabinet on level fl oor.2.
Place hot unit (may be shipped separately) on the top 3.

of the cabinet.
CAUTION: Hot unit is heavy, be sure to have plenty

of help during installation.

4. Place roll-in-rack (shipped separately) into cabinet.

5. Adjust the legs of the cabinet to ensure proper fi t of
rack into cabinet.

HOW TO START UNIT

(for fi rst-time operation only)

A new oven needs to “burn off” factory oils and glue
before it’s fi rst use. Do NOT load food into oven until this

has been done!

Push switch to “ON”.1.
Press the SELECT button and choose the TIMED 2.

mode.
Press the COOK button and set the temperature to 3.

350°F (177°C).
Press the HOLD button and set the temperature to 4.

150°F (66°C).
Press the PROBE/TEMP button and set the time to 1 5.

hour.
Open the door and open the cabinet vent. 6.
Allow oven to run automatically for one hour of 7.

COOK/RETHERM cycle and 30 minutes of HOLD
cycle.

Allow oven to cool and clean interior of oven. 8.

Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com

Retherm

Ovens

FL-2273

Rev. 3 12/08) Page 4 of 11

POWER SWITCH CONTROLPRODUCT KEYS

5925 Heisley Road • Mentor, OH 44060-1833

OPERATING INSTRUCTIONS

OPTIONAL

PROBE RECEPTACLE

ON

OFF

POWER

HOW TO SET CONTROL:
For Timed Cook Operation

Press the SELECT button to choose the timed mode.

COOKING TIME

Press the PROBE/TIME button. The display will show 1.
the cook/retherm time.

Use the UP and DOWN arrows to set the desired time.2.
Press the SET button to enter the time into the control.3.

COOKING TEMPERATURE

Press the COOK button and the display will show the 1.
cook/retherm temperature.

Use the UP and DOWN arrows to set the desired 2.
temperature

Press the SET button to enter the temperature into the 3.
control.

NOTE: Press the OVEN TEMP button at any time to

view the actual oven temperature.

MODE

PROBE

SELECT

TIME - TEMPERATURE

TIMED

COOK HOLD

HEAT

OVEN

START

TEMP

SETPOINTS

RETHERM

COOK

TIME

SET

PROBE

STOP

HOLD

FOR PROBE COOK OPERATION

Press the SELECT button to choose the probe mode.

PROBE TEMPERATURE

Press the PROBE/TIME button and the display will 1.
show the probe setpoint temperature.

Use the UP and DOWN arrows to set the desired 2.
temperature.

Press the SET button to enter the temperature into the 3.
control.

NOTE: Press the OVEN TEMP button at any time to

view the actual oven temperature.
Press the start button and the display will show
the actual probe temperature.

NOTE: The control will beep when the probe setpoint

temperature has been reached and then automati­cally switches to the Hold mode. The display will
then show the hold setpoint temperature.

HOLDING TEMPERATURE

Press the HOLD button and display will show the 1.
holding temperature.

Use the UP and DOWN buttons to set the desired 2.
temperature.

Press the SET button to enter the temperature into the 3.
control.

Press the START button and the display shows the 4.
remaining time in the cook/retherm cycle.

NOTE: The control will beep after it times down to zero

and then automatically switches to the Hold
mode. The display will then show the hold set­point temperature.

NOTE: Cold food is NOT to be added when unit is

operating in the HOLD mode.

Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com

To manually end the Cook/Retherm, Probe,
or Hold Mode:

Press the STOP button during any of the above modes and
the control will end that mode. If in the Cook/Retherm or
Probe mode, the control will automatically switch into the
Hold mode.

5925 Heisley Road • Mentor, OH 44060-1833

OPERATING INSTRUCTIONS (continued)

Retherm

Ovens

Rev. 3 (12/08) Page 5 of 11

FL-2273

HOW TO OPERATE WITH FOOD:
Manual (Timed mode) Operation

See “HOW TO SET CONTROL” for programming
instructions

Push the power switch to “ON”.1.
Press the SELECT button and choose the TIMED 2.

mode.
Press the COOK button and set to desired temperature3.
Press the PROBE/TIME button and set the desired 4.

time.
Press the HOLD button and set the desired 5.

temperature.
Place the food into oven. Close door and double check 6.

cooking time and temperatures. Then press the START
button to start the cooking/retherm cycle and the Cook
LED will light up.

The oven will beep and automatically switch the 7.
HOLD mode at the end of the cooking cycle. The
Cook LED will go out and Hold LED will light up.

PROBE COOKING

See “HOW TO SET CONTROL” for programming
instructions

Push the power switch to “ON”.1.
Press the SELECT button and choose the Probe mode.2.
Insert the probe jack into the receptacle located inside 3.

the oven top, near the fans. The probe temperature
display will show the digital temperature of the probe.

Put sanitized probe into center of food product. Make 4.
sure food is in the center of the pan, in the center of
the oven.

Press the start button. The Cook LED will light up and 5.
the display will show the internal temperature of the
food being cooked.

NOTE: Do NOT change the mode of controls (probed or
timed) while oven is operating in a Cook/Retherm cycle.
Oven must be off, or in the HOLD cycle, to change the

timer or probe operation.

HOW TO SET HOLD ONLY MODE:

NOTE: Cold food is NOT to be added when unit is
operating in the HOLD mode.

For HOLD mode, preheat unit to 180°F/82°C for 60
minutes.

Push the power switch to “ON”.1.
Press the HOLD button and set the desired hold 2.

temperature.
Press the PROBE/TIME button to set it to zero time.3.
Press the START button and the Hold LED will light 4.

up.

HOW TO SHUT DOWN OVEN:

Push power switch to “OFF”.
CAUTION: Ventilating fans will continue to run until

cabinet is cool. Do NOT disconnect the power supply to
the cabinet while the ventilating fans are still operating, or
damage to components could result.

Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com

Retherm

Ovens

Rev. 3 12/08) Page 6 of 11

FL-2273

OPERATING INSTRUCTIONS (continued)

CAUTION

1. ALLOW CABINET TO COOL.

2. REMOVE HOT UNIT
BEFORE CLEANING

5925 Heisley Road • Mentor, OH 44060-1833

Cleaning Hints:

Use the mildest cleaning procedure that will do the 1.
job.

Always rub in the direction of the polish lines to avoid 2.
scratching the surface.

 Wipe up spills as soon as possible.
 Clean regularly to avoid heavy dirty build-up.

HOW TO CLEAN THE UNIT:

SOIL CLEANER METHOD

ROUTINE

CABINET

Inside and

Outside

(Stainless Steel)

CLEANING
STUBBORN SPOTS

AND STAINS
BURNT-ON FOODS

OR GREASE
HARD WATER

SPOTS and SCALE

Use only a soft cloth, sponge, fi brous brushes, plastic 3.
or stainless steel pad for cleaning and scouring.

Rinse thoroughly with fresh water after every cleaning 4.
operation.

Always wipe dry to avoid water marks.5.

Soap, Ammonia, or mild
*detergent and water.

Mild abrasive made for
stainless steel.

Chemical oven cleaner for
stainless steel.

Vinegar

1. Sponge on with cloth.

2. Rinse with water.

3. Wipe dry.

1. Apply with damp sponge or cloth.

2. Rub lightly.
Follow oven cleaner manufacturer’s

directions.

1. Swab or wipe with cloth.

2. Rinse and dry.

* Mild detergents include soaps and non-abrasive cleaners

Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com

5925 Heisley Road • Mentor, OH 44060-1833

MAINTENANCE INSTRUCTIONS:

TROUBLE-SHOOTING GUIDE

WARNING

IF UNIT GETS TOO HOT OR WON’T SHUT OFF, DISCONNECT

POWER AT BRANCH PANEL. DO NOT UNPLUG CORD!

If hot unit is NOT working, fi rst check the following causes:

1. Cord is unplugged from wall outlet.

3. Switch is turned off.

Retherm

Ovens

FL-2273

Rev. 3 (12/08) Page 7 of 11

2. Circuit breaker/fuse to wall outlet is blown.

PROBLEM POSSIBLE CAUSE SOLUTION

1. Fuse

2. Control
Cabinet does not heat, or doesn’t
heat properly

Blowers do not operate

Heater will not shut off

Vent fans do not shut off

Vent fans do not operate

Control will not switch from “COOK”
to “HOLD” (timed mode)

3. Sensor

4. Heater contactor

5. Loose wiring at heater contactor

6. On/Off Switch

1. On/Off Switch

2. Fuse

3. Blower

4. Control

1. Control defective

2. Heater contactor defective

1. Vent fan timer defective

2. Vent fan timer has not timed out

1. Fuse

2. Vent fan timer defective

3. Vent fan defective

1. Oven is in “PROBE” mode.

2. Control defective

4. Thermostat is turned off, or is set too low.

1. Replace

2. Replace

3. Replace

4. Replace

5. Replace

6. Replace

1. Replace

2. Replace

3. Replace

4. Replace

1. Replace

2. Replace

1. Replace

2. Wait until timer has timed out (about 45
minutes after power switch is turned off)

1. Replace

2. Replace

3. Replace

1. Switch to “TIMED” mode

2. Replace

Control will not switch from “COOK”
to “HOLD” (probe mode)

Control will not switch to “COOK”
(probe mode)

Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com

1. Oven is in the “TIMED” mode

2. Probe not plugged in

3. Control defective

1. Oven in “TIMED” mode

2. Probe temperature setting lower than
probe temperature

3. Probe not plugged in

4. Control defective

1. Switch to “PROBE” mode

2. Plug in probe

3. Replace

1. Switch to “PROBE” mode

2. Set probe temperature to desired
temperature

3. Plug in probe

4. Replace

Retherm

Ovens

FL-2273

Rev. 3 12/08) Page 8 of 11

Include all information on nameplate when ordering parts

5925 Heisley Road • Mentor, OH 44060-1833

REPLACEMENT PARTS

1

ON

OFF

POWER

2a

Hot Unit Replacement Parts

ITEM DESCRIPTION Part No.

1. Switch (On/Off) 0808-113-01-K

2. Microprocessor Control 0848-070-K
2a. Product Keys (optional) 0848-072

3. Vent Fan 0769-174

4. Fan Guard 0769-167

5. Fuse (Before 7-08)
Fuse (After 7-08)
Fuse holder (Before 7-08)
Fuse holder (After 7-08)

6. Blower Kit 0769-186-K

7. Contactor 0857-026

8. Terminal Block, front 0852-093

9. Terminal Block, rear 0852-091

10. Timer, Fan 0849-089

11. High Limit Switch 0848-077

12. Sensor 0848-073-01

13. Sensor Bushing 0818-014

14. Connector, Probe 0848-059-01
Probe, 1.5” Long 0848-059-02

0807-058
0807-151

0807-048
0807-150

14

MODE

PROBE

TIMED

SELECT

OVEN
TEMP

TIME - TEMPERATURE

COOK HOLD

HEAT

START

2

SETPOINTS

RETHERM

COOK

TIME

SET

PROBE

STOP

HOLD

ITEM DESCRIPTION Part No.

PARTS for 8200W, 1-PH UNITS

15. Terminal Block, Rear 0852-090

16. Power Cord 0810-124

17. Heater Kit, 208 V 0811-261
Heater Kit, 240 V 0811-262

18. Strain Relief 0818-061

19. Plug 0840-033

PARTS for 8200W, 3-PH UNITS

15. Terminal Block Segment 0852-107

16. Power Cord 0810-132

17. Heater Kit, 208 V 0811-261
Heater Kit, 240 V 0811-262

18. Strain Relief 0818-050

19. Plug 0840-049

Cabinet Replacement Parts

Hot Unit, 208V, 1 PH HU18671190MP
Hot Unit, 240V, 1 PH HU18671191MP
Hot Unit, 208V, 3 PH HU18671192MP
Hot Unit, 240V, 3 PH HU18671193MP
Door Latch 1006-120-01-K
Door Catch Kit 1006-120-02-K
Door Hinge 0519-074-K
Door Assembly 1221-542-K
Door Gasket 0861-226

Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com

5925 Heisley Road • Mentor, OH 44060-1833

REPLACEMENT PARTS

Include all information on nameplate when ordering parts

7

10

8

6

L3

L2T3T2

L1

T1

Retherm

Ovens

FL-2273

Rev. 3 (12/08) Page 9 of 11

19

16

9

18

15

5

13

12

14

11

3

4

Hot Unit w/o Top cover

(For parts description, refer to page 9.)

17

6

Bottom of Hot Unit, Cover Removed

(For parts description, refer to page 9.)

Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com

Retherm

Ovens

FL-2273

Rev. 3 12/08) Page 10 of 11

5925 Heisley Road • Mentor, OH 44060-1833

WIRING DIAGRAM

HIGH TEMP.

LIMIT, LEFT

8

HIGH TEMP.

LIMIT, LEFT

8

WIRE KIT 5812-908

3 PHASE

PRODUCT KEYS ( UPPER )

9

1

17

FUSES

3A

231622

PRODUCT KEYS ( LOWER )

67

FRONT

LEFT

9

13

11

FRONT

REAR

RIGHT

12

68

LIMIT, RIGHT

HIGH TEMP.

4

8

CONTACTOR

2

3A

4

HEATER

L3

290

L1

1

GL2

3

BLOCK

TERMINAL

28 27

HEATERS

POWER INPUT

WIRE KIT 5812-907

CONTACTOR

HEATER

SINGLE PHASE

4

9

8

1

2

16

17

FUSES

3A

3A

23

22

10

7

67

FRONT

LEFT

9

11

FRONT

11

CONTACTOR

HEATER

13

REAR

RIGHT

12

21

68

LIMIT, RIGHT

4

L2 L1 G

BLOCK3TERMINAL

5

HEATERS

HIGH TEMP.

POWER INPUT

12

510

3

76

FAN TIMER

LEFT

6

FUSES

3A

3A

23

22

VENT FAN

M M

6

5

19

TERMINAL

BLOCK

18

29

AB

22

BA

SENSOR, PROBE

7

SWITCH

POWER

10

20

A

23

21

TEMP. CONTROL

BOARD

AC-N110v220v

3029

HEAT

28

32

28

30

29

85

86

RTD1RTD2

FAN

t°

SENSOR, OVEN

31

28

22

20

30

21

SPLICE

31

26

25

31

2323

10

25

31

TERMINAL

BLOCK

26

BM BM

LMR

BLOWER MOTORS

29

27

2424

BM

28

30

29

Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com

RIGHT

VENT FAN

5925 Heisley Road • Mentor, OH 44060-1833

OPERATING INSTRUCTIONS

FOR OVENS WITH OPTIONAL PRODUCT KEYS

Retherm

Ovens

FL-2273

Rev. 3 (12/08) Page 11 of 11

POWER SWITCH CONTROLPRODUCT KEYS

ON

OFF

POWER

PROBE RECEPTACLE

CONTROL PANEL

The Product Keys provide automatic menu selections
(arranged in banks of 5 keys, max. 10 keys). Each Product
Key can be user programmed for desired mode (PROBE
or TIMED) and the required COOK, HOLD, and PROBE
or TIME setpoints.

Each Product Key Lights up when pressed “ON”.
The Product Key Light will go “OFF” when pressed a
second time or when changing any setpoint value. This
returns the control to manual operation.

MODE

PROBE

SELECT

TIME - TEMPERATURE

TIMED

COOK HOLD

HEAT

OVEN

START

TEMP

SETPOINTS

RETHERM

COOK

TIME

SET

PROBE

STOP

HOLD

Product Key Programming

Press the desired Product Key.1.
Press and hold the SET key until the Product Key light 2.

begins to fl ash.
Enter the desired Mode, Cook, Hold and Probe/Time 3.

values.

NOTE: Press the SET key after each value is changed or

added to accept and store a new setpoint.

4. To exit; Press the SET key for a few seconds until the
Product Key light is extinguished.

Extra Replacement Parts:

Product Key (5 Keys) 0848-072
For Hot Unit Replacement, See Page 9:
The Hot Unit suffi x number will be Q5 (5 Keys)
or Q10 (10 Keys) instead of Q1

Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com