Cres Cor RO151030 Service Manual

Retherm Oven

FL-RO151030

Rev. 3 (7/13)

5925 Heisley Road • Mentor, OH 44060-1833

INSTALLATION, OPERATION and MAINTENANCE

MANUAL for Cres Cor 8kW QUIKTHERM™ RETHERM OVENS

Page 1 of 11

RO151030

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

Retherm Oven

FL-RO151030

Rev. 3 (7/13)

Page 2 of 11

5925 Heisley Road • Mentor, OH 44060-1833

TABLE OF CONTENTS

SUBJECT PAGE

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

OPERATING INSTRUCTIONS

First Time Operation ....................................................3

How to Use Control for Cooking & Holding .................................4

How to Save and Use Recipes ............................................5

“Quick Recipe” and Other Menu settings ....................................5

MAINTENANCE INSTRUCTIONS

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

Trouble Shooting Guide ...............................................7, 8

Cabinet Replacement Parts ...............................................9

Hot Unit Replacement Parts .............................................10

Wiring Diagram For 208/240 Volt, 1 Phase .................................11

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

WARNING

RISK OF FIRE OR ELECTRIC SHOCK

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

DO NOT REMOVE COVER (OR BACK)

NO USER-SERVICEABLE PARTS INSIDE

DO NOT OPEN

REPAIR SHOULD BE DONE BY AUTHORIZED SERVICE

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

PERSONNEL ONLY

Retherm Oven

FL-RO151030

Rev. 3 (7/13)

Page 3 of 11

5925 Heisley Road • Mentor, OH 44060-1833

INSTALLATION INSTRUCTIONS

VENTING YOUR OVEN:

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

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

UNIT SPECIFICATIONS: Unit uses six (6) elements (1325 watts each). Units are rated 8000 watts.

MODEL NOS.

ELECTRICAL SPECS

(AC SERVICE)

VOLTS PHASES HZ AMPS VOLTS AMPS PHASES VOLTS RECEPTACLE

RO151030 208 1 60 39 208 50 1 208 6-50R

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

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

ELEC. LOAD

POWER SUPPLY REQUIREMENT

ALL 3 PHASE IS 3 WIRE + GROUND

HOW TO INSTALL CABINETS:

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

2. Position cabinet on level oor; install the cabinet
interior (pan slides) if not already installed.

3. Plug power cord into proper wall receptacle.

FIRST-TIME OPERATION

NOTE: A new oven needs to “burn off” manufacturing

oils and excessive adhesive before its rst use.

Do NOT load food into oven until this has been
done!

1. Push the switch to on; the light will come on.

NOTE: The letters “LOTPR” (low temperature) will show

on the control panel until it reaches 140°F (60°C).

2. Press the “COOK” button.

3. Push down and turn the control knob to show 200°F.
Push the knob again to set the temperature. Run the
unit for one (1) hour.

4. Turn the unit off and let cool.

5. Wipe the inside clean with detergent and hot water.

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

Retherm Oven

FL-RO151030

Rev. 3 (7/13)

Page 4 of 11

5925 Heisley Road • Mentor, OH 44060-1833

OPERATING INSTRUCTIONS

HOW TO USE THE RETHERM CONTROL:

*Push the lighted switch on the control panel; the light

will come on and the cabinet will start heating.

*The display will read “LOTPR” (low temperature)

below 140°F. (60°C.).

NOTE: Wait one (1) hour after start up before loading the

food for best results.

The display will read “PREHT” until the cabinet

reaches the set temperature.

Cooking:

1. Press the COOK button.

2. Turn the control knob to the desired cooking
temperature between 200°F (93°C) and 350°F (176°C).

3. Push the knob to set the temperature.

4. The control automatically goes to the HOLD mode.
(Continue to step 1 below).

Holding:

(Press the HOLD button only if you are just holding food),

1. Turn the control knob to the desired holding
temperature between 140°F (60°C) and 220°F (104°C).

2. Push the knob to set the temperature.

3. The control automatically goes to the TIME mode.

Setting the time or Food Probe:

1. If NOT using the Food Probe:
a) Turn the control knob to the desired hours/minutes.
b) Push the knob to set the time.

2. Using the Food Probe:
Plug in the food probe BEFORE you enter the TIME
mode. Otherwise, you have to press the PROBE
button to set the probe temperature.
a) Turn the knob to the desired temperature.
b) The timer will stop when the probe reaches the set
temperature.

3. Press the START button. The display will show
“READY” when preheated.

4. Press the START again to use this recipe (see Recipes”).

Note: Press the knob for 4 seconds to cancel the recipe.

The DISPLAY button shows (cycles through) all the
values when in each mode:

• “PREHEAT” OR “READY”: momentarily shows the
actual cabinet temperature.

• “COOK” (Timed): shows Home screen, set point,
count down time, actual cabinet temperature.

• “COOK” (Probe): shows Home screen, set point,
count up time, actual cabinet temperature.

• “HOLD”: shows Home screen, set point, count up
time, actual cabinet temperature.

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

Retherm Oven

FL-RO151030

5925 Heisley Road • Mentor, OH 44060-1833

OPERATING INSTRUCTIONS (continued)

RECIPES:

The control can hold up to 18 saved recipes.

To save a recipe:

1. Press and hold both the TIME button and the knob

for 5 seconds. The screen will be ashing. This is the

setup menu.

2. Turn the knob through the menu until you get to
“Edit”.

3. Press the knob and turn to the recipe you want to edit.
There are 18 blank recipes to customize and save.

4. Press the knob and enter the cook, hold and time
values.

5. After the entering the nal value, “Edit” will show
again.

6. Press the knob to edit more recipes or turn to “End” to
exit the menu.

To use one of the recipes:

1. Push one of the three RECIPE group buttons for the
recipe number you want.

2. Turn the knob to the recipe you want and press the
knob to select.

3. Press the START button to preheat.

4. After it shows “READY”, press the START button
again to begin the recipe.

Note: The display button will cycle through all the values

as before, but will include the recipe number, if
using a saved recipe.

Rev. 3 (7/13)

Page 5 of 11

Quick Recipe Note:

You can set “Quick Recipes” for recipes that you use
often. This way, when you press a recipe group button and
press start, that recipe will start cooking without searching
for the recipe number. Recipe numbers can be set up as
“quick recipes” as follows:

1. Press and hold both the TIME button and the knob for
5 seconds to get into the menu.

2. Turn the knob to “RBTN” and press the knob. The

word “PUSH” will ash.

3. Press one of the recipe group buttons to assign a
recipe.

Note: Recipe numbers 1-6 can be set up as Group button 1.

Recipe numbers 7-12 can be set up as Group button 2.
Recipe numbers 13-18 can be set up as Group button 3.

4. Turn the knob to the recipe number you want to assign
to that button and press the knob.

Repeat the process to assign recipes to the other two recipe

group buttons; or,
turn the knob to “END” the submenu; turn to “END” the

menu.

Additional Menu Settings:

Press and hold both the TIME button and the knob for 5
seconds to get into the menu.

Here you can set the recipes, quick recipes, temperature
units (°C or °F) and the datalog
settings (USB connection required):

”RECE” allows you to enable or disable the data record
feature.

“RECF” allows you set how often (in minutes) a
datapoint will be recorded.

“RECD” allows you to set how long (in days) you
would like the data to be stored in memory.

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

Retherm Oven

FL-RO151030

5925 Heisley Road • Mentor, OH 44060-1833

MAINTENANCE INSTRUCTIONS

HOW TO CLEAN THE UNIT

WARNING

BEFORE cleaning the cabinet:

1. Unplug cord from wall. Allow cabinet to
cool.

2. Do NOT hose cabinet with water.

3. Do NOT get water on controls.

4. Do NOT use abrasives or harsh
chemicals.

5. Do NOT use “Cres Clean” (or any citrus
cleaner) on labels or plastic parts.

Rev. 3 (7/13)

Page 6 of 11

Cleaning Hints:

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

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

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

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

5. Always wipe dry to avoid water marks.

CARE & USE OF FOOD PROBES: DO’S & DON’TS

DO DON’T

1. Sanitize (clean) the stainless steel probe after every
use.

2. Wipe clean with soapy, damp cloth. Rinse with clear
water cloth.

3. Sterilize with food grade alcohol wipe prior to reuse
in another food item.

4. Pull/Remove the probe out of the food using the
plastic handle only.

5. Designate a proper storage place for probes like the

manager’s ofce.

1. NEVER remove probe from a food product and place

2. DO NOT submerge the plastic handle, wires or

3. NEVER pull on the wires to remove probe from

4. Take care NOT to catch or bend the probe in the door

directly into new food items. Probe must be cleaned
and sanitized before reuse.

connector/plug into water. Clean as instructed with
soapy cloth and rinse with clean wet cloth.

food products or the oven receptacle. Always use the
plastic handle or jack to insert and remove the probe
from the foods and oven itself.

closure. The probe is a sensitive measuring device
and should be replaced if damaged.

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

Retherm Oven

FL-RO151030

Rev. 3 (7/13)

Page 7 of 11

TROUBLE-SHOOTING GUIDE, continued

HOW TO CLEAN THE UNIT:

SOIL CLEANER METHOD

ROUTINE CLEANING

CABINET

Inside and Outside

(Stainless Steel)

STUBBORN SPOTS,
STAINS

BURNT ON FOODS OR
GREASE

HARD WATER SPOTS &
SCALE

* Mild detergents include soaps and non-abrasive cleaners

5925 Heisley Road • Mentor, OH 44060-1833

MAINTENANCE INSTRUCTIONS

Soap, ammonia or mild
detergent* and water.

Mild abrasive made for
Stainless Steel.

Chemical oven cleaner
made for Stainless Steel.

Vinegar

1. Sponge on with cloth

2. Rinse

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.

HOW TO ADJUST THE DOOR LATCH:

1. For vertical (up and down movement) adjustment:
a. Loosen (2) screws located in magnetic strike.
b. Move strike up or down for alignment to

magnet on latch.

c. Tighten screws to secure

TROUBLE-SHOOTING GUIDE

WARNING

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

POWER AT BRANCH PANEL. DO NOT UNPLUG CORD!

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

1. Cord is unplugged from wall outlet.

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

2. For horizontal (greater or lesser magnetic draw)
adjustment:

a. Loosen (4) screws in door latch.
b. Move latch forward or backward to adjust

magnetism.

c. Tighten screws to secure.

3. Switch is turned off.

4. Fuse on back of unit is blown.

PROBLEM POSSIBLE CAUSE SOLUTION

Oven does not turn on

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

1. Power switch is bad

2. Retherm control is bad.

1. Replace

2. Replace

Retherm Oven

FL-RO151030

5925 Heisley Road • Mentor, OH 44060-1833

MAINTENANCE INSTRUCTIONS

TROUBLE-SHOOTING GUIDE (continued)

IF THE OVEN TURNS ON:

PROBLEM POSSIBLE CAUSE SOLUTION

1. Replace

2. Replace

3. Replace

4. Replace

5. Replace

1. Replace

2. Replace

3. Replace

1. Replace

2. Replace

1. Replace

2. Wait until it cools
Check “Heater will not shut off”

1. Replace

2. Replace

1. Cancel recipe and switch to “TIMED” mode

2. Replace

1. Cancel recipe and switch to “PROBE” mode

2. Plug in probe

3. Replace

4. Replace

1. Switch to “PROBE” mode

2. Set probe temperature to desired tempera­ture

3. Plug in probe

4. Replace

Oven 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 (See Note)

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

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

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

1. Sensor

2. Heater contactor

3. Loose wiring at heater contactor

4. Retherm control

5. High Limit

1. Air retherm switch

2. Blower

3. Retherm control

1. Control defective

2. Heater contactor

1. Vent fan switch defective

2. Control compartment is still hot.

1. Vent fan switch defective

2. Vent fan defective

1. Oven is in “PROBE” mode.

2. Retherm control defective

1. Oven is in the “TIMED” mode

2. Probe not plugged in

3. Probe defective

4. Retherm control defective

1. Oven in “TIMED” mode

2. Probe temperature setting lower
than probe temperature

3. Probe not plugged in

4. Retherm control defective

Rev. 3 (7/13)

Page 8 of 11

ERROR CODES:

CODE DISPLAYED CAUSE SOLUTION

no p No meat probe Plug in probe

Err0 Temp probe bad Replace

NOTE: Vent fans will not operate until the control compartment requires ventilation to limit temperatures. Replacement

of electrical components must be done by a qualied electrician.

Refer to our Service Agency list, FL-1400 (found in the back of this manual), of authorized service centers.
Instructions for replacing parts are included in replacement parts list.

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

Retherm Oven

FL-RO151030

Rev. 3 (7/13)

Page 9 of 11

5925 Heisley Road • Mentor, OH 44060-1833

REPLACEMENT PARTS

Include all information on nameplate when ordering parts

28

27

26

23

21

20

21

20

19

Replacement Parts:

ITEM DESCRIPTION PART NUMBER

19. Door Assembly 1221-579-K

20. Door Latch Kit 1006-122-01-K

21. Door Strike Kit 1006-122-02-K

22. Door Hinge Kit 0519-109-K

23. Door Gasket 0861-235-K

24. Casters 0569-306-R

25. Casters w/brake 0569-306-BK

26. Posts 0696-250

27. Air Tunnel 0546-146-C

28. Wire Angles (2 per kit) 0621-281-K
Drip Pan (clear) 1017-058

25

22

24

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

Retherm Oven

FL-RO151030

5925 Heisley Road • Mentor, OH 44060-1833

11

1

7

2

13

7

17

10

Rev. 3 (7/13)

8

9

4

12

Page 10 of 11

14

16

4

5

5

4

5

6

17

REAR VIEWFRONT VIEW

TOP VIEW

WITHOUT COVER

Electrical Replacement Parts:

ITEM DESCRIPTION Part No. ITEM DESCRIPTION Part No.

1. Switch (On/Off) 0808-125 10. Hi Limit Switch 0848-077

2. Retherm Thermostat 11. Transformer 0769-197
Digital Control
Sensor

0848-092-03-K
0848-091-K

4. Vent Fan 0769-174 14. Power Cord Kit 0810-178-K

5. Fan Guard 0769-167 16. Strain Relief Kit 0818-103

6. Fuse
Fuse Holder

0807-155
0807-150

7. Blower Kit 0769-186-K Food Probe 1.5” Long 0848-098

8. Contactor 0857-026 Food Probe 6” Long 0848-100

9. Terminal Block, rear 0852-093

12. Relay 0857-102

13. Fan Switch 0848-034

17. Heater Kit (208V) 0811-306
Connector, Probe (not shown) 0848-094

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

Retherm Oven

IMPORTANT: VENT FANS

BLOW AIR INTO APPLIANCE

BLOWER AIR SWITCH

ON UNITS WITHOUT

BLOWER CUTOUT

SWITCH, WIRES 15

FL-RO151030

Rev. 3 (7/13)

Page 11 of 11

for NON-PASS THRU OVENS RO151F SERIES 208V, 1 Ph

Include all information

on nameplate when

ordering parts

2

L

N

N

L

7

6

RED

BLACK

BROWN

TRANSFORMER

7 WIRE RENAU TRANSFORMER WIRING

23

ORANGE

AIR

t°

MEAT

t°

BROWN

GR AY

RED

PROBE

PROBE

22

BLUE/ORANGE

TRANSFORMER

WIRE COLORS: TRIAD/HAMMOND

RED/YELLOW

25

1

9

WHITE/WHITE

BROWN/BROWN

PURPLE/BLUE

YELLOW/GREY

24

POWER

SWITCH

(rear view)

8

BLACK/BLACK

GREY/RED

5925 Heisley Road • Mentor, OH 44060-1833

REPLACEMENT PARTS

GROUND*

FUSES

2

6A

6A

1

4

500F

31

33

34

30

27

26

30

HIGH LIMIT

28

29

3

500F

HIGH LIMIT

32

35

41 42

41

L3

HEATER

CONTACTOR

26

31

36

POWER CORD

6 AWG., 3 COND.

CABINET BODY

TERMINAL

LOCK WASHER

NUT

42

12

L1

L2

13

27

32

37

*A lockwasher & nut (or

double nuts) are required on

ground bolt on top of cord's

ground terminal.

MOTOR

BLOWER

12

COOK BLOWERS

10

11

K3 K1 K2

LOOKING AT REAR

14

15

22

16

15

14

13

12
11

25

10
9

24

15

16

BLOWER

MOTOR

16

40

37

AIR TEMP

RENAU CONTROL

23

8

7

6
5

4
3
2
1

2

3

1

AND 16 ARE

WIRE 17

REPLACED WITH

BLOWER

MOTOR

BLOWER

RETHERM BLOWERS

18

14

MOTOR

BLOWER

MOTOR

BLOWER

HOLD BLOWERS

21

20

19

MOTOR

240V PWR SW

10

21

8

40

34

39

35

9

38

36

500F

HIGH LIMIT

L1

brwn

19

L2

blue

18

20

13

TERMINAL BLOCK

FAN

VENT

FAN

VENT

FAN

VENT

3

HIGH TEMP

CLOSES @130°F

5

4

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