Nu-Vu SUB-123 Service Manual

NU-VU® Model:

SUB-123

Oven / Proofer

A Quality Product Made in the U.S.A.

Manufactured exclusively for:

by:

NU-VU® Food Service Systems

5600 13th STREET

MENOMINEE, MICHIGAN 49858-1029

[phone] FAX [phone]

Revised:

10 August 2007

(SUB-123.08d)

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Dear Customer:

Thank you for buying NU-VU® equipment. We think you have purchased one of the best units on the market today.

Every piece of NU-VU® equipment is put through a full electrical test. In addition, NU-VU® ovens are randomly selected for test baking to ensure you are receiving the best product possible. The interior of the oven may darken slightly during this testing process. This coloration is normal and occurs in any oven that has been operated for a few hours. It will not affect the operation, durability or warranty of your NU-VU® equipment.

This OWNER'S MANUAL has been put together to give you a good general knowledge of your equipment. It is not a detailed technical manual; such a book is unnecessary for the daily care and operation of your unit. However, this Manual does contain some basic trouble-shooting and service information. If this OWNER'S MANUAL does not answer your questions or solve your problems please call us on our toll-free service line at [phone]. You can also fax your question or comment to our Service Department at [phone]. You can even e-mail us at [e-mail]. One of our service technicians will be glad to assist you. Please remember to supply the model number, serial number and the manufacturing date code of your NU-VU® equipment when you contact us.

Each page carries information to help you use this OWNER'S MANUAL. The header at the top of each page contains the title of the section you are currently in. The footer at the bottom of each page carries the page number, our toll-free telephone number, and our Sales and Service fax numbers.

All sections begin at the top of a page and start like this:

SECTION HEADING

All sub-section headings are on the left side of each page and look like this:

SUB-SECTION HEADING:

SUB-SECTION HEADING - -

Pointing hands are located in the left margin throughout this OWNER'S MANUAL, and point toward shaded boxes containing important warning and/or safety information:

IMPORTANT: THESE SHADED BOXES WILL CONTAIN IMPORTANT WARNING,

OPERATING AND/OR SAFETY INFORMATION!

The illustrations used throughout this OWNER'S MANUAL are titled in their lower left-hand corners. A complete list of these illustrations, along with their respective page numbers, can be found on page iv of this manual. A REPLACEMENT PARTS LIST can be found at the end of this manual. Replacement parts are listed by Reference Number. The part Reference Numbers are circled  in the illustrations and bracketed [ ] in the text. Please note that some of the parts listed are not replaceable except as part of another assembly, but are listed for reference and identification only.

Electrical schematics are also included at the end of this OWNER'S MANUAL for use as reference aids only. Please contact our Service Department for specific electrical information.

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TABLE OF CONTENTS
ABOUT YOUR SUB-123 ...............................................................................................	1
SUB-123 Specifications .........................................................................................	2
RECEIPT, INSTALLATION AND START-UP
Receipt ...................................................................................................................	3
Installation ..............................................................................................................	4
Connection of Electrical Supply .......................................................................	4
Connection of Optional Water Supply .............................................................	5
Start-Up
Oven ................................................................................................................	6
Standard Manual-Fill Proofer ...........................................................................	7
Optional AUTOMIST Proofer ...........................................................................	8
OPERATING INSTRUCTIONS
Proofer
For the Standard Manual-Fill Proofer ..............................................................	9
For the Optional AUTOMIST Proofer .............................................................	10
Oven ....................................................................................................................	12
99-Minute Digital Timer (optional) .........................................................................	13
Timer Operational Notes ......................................................................................	13
MAINTENANCE AND CLEANING GUIDE
Maintenance .........................................................................................................	14
Manual Fill Proofer Dry-Out Procedure .........................................................	14
AUTOMIST Proofer Dry-Out Procedure ........................................................	14
Oven Dry-Out Procedure ...............................................................................	14
Cleaning ...............................................................................................................	15
SERVICE AND REPLACEMENT GUIDE ....................................................................	16
Temperature Control, How to Adjust ....................................................................	16
Door Latch, How to Adjust ....................................................................................	17
Door Test Procedure ............................................................................................	17
Door Gasket, How to Replace ..............................................................................	18
Replacing the Oven Door Gasket ...................................................................	18
Replacing the Proofer Door Gasket ..............................................................	19
NU-VU® EQUIPMENT WARRANTY
Parts .....................................................................................................................	20
Labor ....................................................................................................................	20
Warranty Limitations ............................................................................................	21
Parts Return Procedure and Conditions ...............................................................	22
REPLACEMENT PARTS LIST
Electrical Components .........................................................................................	23
Oven Control Components ...................................................................................	24
Proofer Control Components ................................................................................	24
Door Components ................................................................................................	24
Oven Interior Components ...................................................................................	25
Proofer Interior Components (Manual Fill).............................................................	25
General Exterior Components ..............................................................................	25
AUTOMIST Option Components ..........................................................................	26
ELECTRICAL SCHEMATICS ......................................................................................	26

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* * * NOTICE * * *

Record the Model Number and Serial Number from the nameplate on the side of your unit on page 20 in the WARRANTY section for future reference. Please be ready to give these numbers to our Service Department when ordering replacement parts or requesting service.

	LIST OF
	ILLUSTRATIONS AND SCHEMATICS
Fig. #1	................................................ Installation .......................................................	3
Fig. #2 ...................................	Power Supply Connections ..........................................	5
Fig. #3 ..................................	Manual Fill Proofer Controls ..........................................	9
Fig. #4 ..................................	AUTOMIST Proofer Controls .......................................	10
Fig. #5 .............................................	Oven Controls ..................................................	12
Fig. #6 ......................................	99 - Minute Digital Timer ...........................................	13
Fig. #7 .......................................	Door Latch Assembly .............................................	17
Fig. #8 ..............................................	Door Gasket ....................................................	18
Electrical ..................................................................................................Schematics		26

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SUB-123 OWNER’S MANUAL

ABOUT YOUR SUB-123

ABOUT YOUR SUB-123

The NU-VU® SUB-123 is an electrically powered and operated commercial baking/cooking appliance. It does not require exterior venting under normal circumstances; however, hood and venting requirements vary from country to country, state to state, and even from locality to locality. For this reason, NU-VU® cannot give specific detailed information regarding your individual application. Your local building inspector, licensed contractor, or installer is best qualified to determine your specific needs.

The oven section of the SUB-123 features our patented V-AIR® air movement system. A top-mounted blower moves the air down through the side walls to be heated, then out through specially designed hole patterns to provide even heat distribution throughout the oven. Your product is baked evenly from top to bottom, side to side, front to back without turning pans. You can load the oven completely with pans having the same product, bake, and remove the entire load at the same time. The bake is uniform because each shelf now receives essentially the same air pattern.

The oven section is equipped with a single 425 F solid state heat control and a 60-minute mechanical timer. The oven compartment can hold up to three (3) full size 18"x26" sheet pans, or six (6) half-size 13"x18" sheet pans on the included chrome-plated wire shelves.

The Proofer section is equipped with a 250 F solid state heat control, a numbered (1-10) humidity control, and a 60-minute mechanical timer. Manual fill proofers are supplied with a stainless steel water pan (½ size x 2½"). The proofer compartment can hold up to nine (9) full size 18"x26" sheet pans, or eighteen (18) 13"x18" half-size sheet pans on the included chrome-plated wire shelves. A total of twelve (12) chrome plated wire shelves are included for use in the oven and proofer.

Measuring 78¾” high, 36½” wide and 29” deep, the entire unit takes up less than 7½ square feet of floor space. It is constructed of stainless steel both inside and out. The front and back frames are cut from single sheets of stainless steel. These frames then are welded to the stainless base and top headers to form a unit with superior durability and rigidity. Components such as temperature and humidity controls, timers, switches, motors, heating elements, and others are thoroughly tested before shipment. Ongoing research and development projects are used to introduce the latest and most dependable components.

The NU-VU® SUB-123 is designed for:
•	Automatic pan positioning	•	Dependability
•	Rapid and even baking	•	Low energy consumption
•	Easy cleaning	•	Low maintenance
•	Simple operation	•	Rapid servicing

These options are also available for use on the SUB-123:

•AUTOMIST Proofer humidity system

•Digital 99-minute timers

•Digital thermometers

The AUTOMIST option eliminates the manually filled water pan in the proofer, but requires connection to a pressurized potable water supply. An adjustable water mist is injected into the blower wheel in the bottom of the proofer. The blower wheel then distributes this water mist evenly throughout the proofer compartment to provide the controlled humidity necessary for proper proofing action.

Digital 99-minute timers are available can be substituted for the 60-minute mechanical timers that are supplied as standard equipment.

Digital thermometers can be added to the front of the unit for either the oven or proofer, or for both. While the thermometers have no control function, they can give an indication of actual internal temperatures.

NU-VU® FOOD SERVICE SYSTEMS		MENOMINEE MICHIGAN 49858-0035
[phone]	Sales Fax [phone] ♦ Service Fax [phone]	page 1

ABOUT YOUR SUB-123 SUB-123 OWNER’S MANUAL

SUB-123 SPECIFICATIONS:

Exterior Dimensions

Height = 78¾" Width = 36½" Depth = 29"

Interior Dimensions (usable space)

Oven Height = 14½"	Width = 26"	Depth = 18½"
Proofer Height = 32"	Width = 26"	Depth = 18½"
Door Swing (straight out from face of unit)
Oven = 29¼"	Proofer = 29¼"

Capacities

Oven = Six 13"x18" half size sheet pans with 4¼" pan spacing or three 18"x26" full size sheet pans with 4½" spacing

Proofer = Eighteen 13"x18" half size sheet pans with 3¼" pan spacing or nine 18"x26" full size sheet pans with 3¼" spacing

Listings/Approvals

Service Connections

Electrical:
120/208 volt, 60 Hz	120/240 volt, 60 Hz
220/380 volt, 50 Hz	230/415 volt, 50 Hz

Single or three phase, with or without an electrical neutral, to be hard wired on site.

The oven compartment uses two 2,000-watt heating elements in 208 or 240 volts. They may be wired in series or parallel depending on the intended power source (refer to appropriate electrical schematic at the end of this manual).

The proofer compartment for the standard manual fill proofer uses two 255-watt elements to heat the compartment, and one 625-watt element to produce humidity in the compartment. Proofers equipped with the AUTOMIST option use two 600-watt heating elements only; no humidity element is required.

Water:

Standard manual fill units do not require connection to a water supply.

Units with the AUTOMIST option require direct connection to a pressurized potable water supply. Any unit requiring connection to a water supply comes equipped with a 1/4” compression-type copper fitting installed on the back of the unit (refer to Fig. #1 on page 3)

NU-VU® FOOD SERVICE SYSTEMS	MENOMINEE, MICHIGAN 49858-0035
page 2	Sales Fax [phone] ♦ Service Fax [phone]	[phone]

SUB–123 OWNER'S MANUAL

RECEIPT, INSTALLATION AND START-UP

RECEIPT, INSTALLATION AND START-UP

RECEIPT:

It is essential to inspect the unit immediately when it arrives. NU-VU® has placed instructions on the packaging to help avoid damage in transit. However, negligent handling can produce hidden damage.

These steps should be followed:

A.Inspect the entire perimeter of the package for damage or punctures to the packing material. This may indicate damage to the unit inside. Call any and all packing damage to the attention of the delivery person.

B.If any package damage is found uncrate the unit immediately in the presence of the delivery person to determine if the unit is damaged. Pay special attention to the top of the unit. Make sure it is not bend or otherwise damaged, which may occur if the top of the unit has struck a door

frame or the top of a trailer. If any damage is found indicate the type and amount of damage on the shipping documents and notify NU-VU® at [phone] immediately after filing a freight claim.

C.Uncrate the unit carefully and check the entire unit (top, front, back, and both sides) for any visible or hidden damage.

D.Remove the unit from the shipping pallet and inspect the bottom (including the Casters) for any damage. Check the Casters and the Proofer Motor/Cover under the unit.

E.If any damage is noted after the driver leaves immediately contact the freight company and NU-VU® Food Service Systems.

F.Check the Oven and Proofer Doors. Make sure both Doors close completely, and that the Door

Gaskets seal firmly (refer to the DOOR TEST PROCEDURE in the SERVICE AND REPLACEMENT GUIDE). If they do not close or seal properly please contact the NU-VU® Service Department for instructions and assistance in any required adjustments.

G.Count the number of Shelves included. There should be a total of twelve (12) Shelves (nine for the Proofer, three for the Oven). Contact NU-VU® immediately concerning any shortage.

Fig. #1 - Installation

NU-VU® FOOD SERVICE SYSTEMS		MENOMINEE MICHIGAN 49858-0035
[phone]	Sales Fax [phone] ♦ Service Fax [phone]	page 3