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ELECTRICAL SCHEMATICS
SERVICE AND REPLACEMENT GUIDE
Your QB-3/9 has been designed to be serviced quickly and easily. In fact, any individual who has average
mechanical ability can do the work. Our Service Department is also available to you Monday through
Friday from 7:00 a.m. to 5:00 p.m. (Central Standard Time) should you find yourself with a situation or
problem other than what is outlined here. Call NU-VU
Department to order replacement parts, ask questions, or offer comments.
This SERVICE AND REPLACEMENT GUIDE has been prepared to cover normal service problems. If this
"trouble-shooting" information does not provide a solution for your particular problem we ask that you call
us for direct assistance. Calling our Service Department before calling in a repair technician can usually
save you both time and unnecessary expense. We want to do everything we can to minimize your "down-
time".
You may need to remove an Access Panel for servicing. DO NOT allow any Access Panels to drop. When
work on the component is finished replace the Panel with care, making sure that all wires are properly
placed and not pulled or pinched. If more than one component is being worked on try to remove only one
component at a time.
The Illustrations used throughout this OWNER'S MANUAL are numbered in their lower left-hand corners.
A complete listing of these Illustrations along with their page numbers can be found at the beginning of this
manual on page v.
A REPLACEMENT PARTS LIST can be found starting on page 23. These 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.
Wiring schematics are included at the end of this OWNER'S MANUAL for reference only. Please contact
our Service Department at (800) 338-9886, for more detailed and current information.
NATIONAL SANITATION FOUNDATION (NSF) GUIDELINES REQUIRE THAT ALL INTERIOR
PARTS BE REMOVABLE WITHOUT THE USE OF TOOLS. THIS EQUIPMENT HAS BEEN
FACTORY ASSEMBLED TO SAFELY ACCOMMODATE ROUGH HANDLING THROUGH
SHIPMENT AND ORIGINAL INSTALLATION. AFTER ANY MAINTENANCE, CLEANING OR
REQUIRED SERVICE WORK THE INTERIOR SHEET–METAL PARTS SHOULD BE
REASSEMBLED AND FASTENED HAND–TIGHT ONLY, BUT STILL REMAIN TIGHT ENOUGH
TO PREVENT ANY RATTLE OR MOVEMENT OF PARTS.
TEMPERATURE CONTROL, How To Adjust:
PLEASE CALL THE NU-VU
ATTEMPTING TO ADJUST THE TEMPERATURE CONTROL!
A. Place a reliable thermometer (or the thermocouple of a test instrument) on a pan in the center of
the Oven or Proofer. Turn the Oven or Proofer ON and set the Temperature Control [22 or 32] to
its normal operational setting. Allow the equipment to reach a stable operating temperature.
B.
Compare the Temperature Control setting to the reading on the test instrument. If there is a
difference of more than 25 in the Oven or 15 in the Proofer you should call the NU-VU
Service Department for advice on adjusting or replacing components.
®
NU-VU
FOOD SERVICE SYSTEMS
16
page
* * * NOTICE * * *
®
SERVICE DEPARTMENT AT (800) 338-9886 BEFORE
Sales Fax (906) 863-5889 ♦ Service Fax (906) 863-6322
®
at (800) 338-9886 and ask for our Service
MENOMINEE, MICHIGAN 49858-0035
QB-3/9 OWNER'S MANUAL
®
(800) 338-9886
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