Marshall Air BZ6 Service Manual

OWNER'S MANUAL

Width:

10"

BZ6A

- 6 Ft. 3 wire w/NEMA

5-15

MODELS BZ6, BZ6A, BZ6AINTL -THERMOGLO™ DOWNHEATER

Supplier Name: MARSHALL AIR SYSTEMS, INC. Address: 419 Peachtree Drive South Charlotte, NC 28217 Model#: ____________________ Serial #: ____________________ ____________________ ____________________ Date Received: ____________________ Date Installed: ____________________ Telephone #: 704-525-6230 Toll Free #: 800-722-3474 Customer Service Fax #: 704-525-6229 Service Referral #: 800-722-3474 Local Service Name: ____________________ Local Service #: ____________________

MANUFACTURER'S INTRODUCTION

The Models BZ6, BZ6A, BZ6AINTL ThermoGlo™ Downheater feature Marshall's own ThermoGlo™ heating technology. ThermoGlo™ offers maintenance free operation since it does not rely on bulbs or parabolic reflectors to achieve its even, gentle heat pattern. Each model includes mounting brackets, On/Off switch and an infinite temperature controller. The Downheater mounts on slide brackets built into the microwave and suspended overshelf.

GENERAL SPECIFICATIONS Models: BZ6, BZ6A, BZ6AINTL

Height: Depth: 20.875"

Electrical:

Power Cord:

Weight: Approvals: ETL and NSF

5.5"

BZ6 - 208 volts, 4.3 amps BZ6A-120 volts, 7 amps BZ6AINTL-240 volts, 3.5 amps BZ6 - wire leads only

plug BZ6AINTL - 6 Ft. 3 wire, no plug

15lbs.

130522BZ6 RV092899

MODELS BZ6, BZ6A, BZ6AINTL -THERMOGLO™ DOWNHEATER

TABLE OF CONTENTS

INSTALLATION.........................................................................................................….... 1

THERMOGLO™ WITH ON/OFF SWITCH ...................................................................... 1

DAILY CHECKLIST AND CLEANING GUIDE......................................................…....1 - 2

MONTHLY MAINTENANCE......................................................................................….... 2

TROUBLESHOOTING................................................................................................….. 2

THERMOGLO™ & HEATED HOLDING CABINET LIMITED WARRANTY..................... 3

THERMOGLO™ & HEATED HOLDING CABINET WARRANTY RETURN

PROCEDURES...........................................................................................................…...4

ILLUSTRATIONS

MODEL BZ6 DOWN HEATER (208V) .........................................................…...FIGURE 1

MODEL BZ6 DOWN HEATER REPLACEMENT PARTS (208V)...................….FIGURE 2

MODEL BZ6A DOWN HEATER (120V)........................................................…..FIGURE 3

MODEL BZ6A DOWN HEATER REPLACEMENT PARTS (120V) ............….....FIGURE 4

WIRING SCHEMATIC, BZ6 208V............................................................…. DWG 130016

WIRING SCHEMATIC, BZ6A 120V..........................................................…. DWG 134140

WIRING SCHEMATIC, BZ6AINTL 240V..................................................…. DWG 137462

130522BZ6 RV092899 Copyright 1999 Marshall Air Systems, Inc.

MODELS BZ6, BZ6A, BZ6AINTL -THERMOGLO™ DOWNHEATER

INSTALLATION

PRE-INSTALLATION

The ThermoGlo™ Downheater has been packaged to minimize the risk of shipping damage. Immediately upon receipt, make certain to inspect the unit for any evidence of damage that might have occurred through rough handling in shipment. FILE ALL CLAIMS WITH THE FREIGHT CARRIER.

FINAL INSTALLATION

1. Unpack unit and remove all protective paper or plastic covering from metal part s.

2. This unit is designed to slide under the shelf system on a rail track. If it is not going to be used with this rail track system, the brackets must have holes drilled in the flanges to mount the ThermoGlo™.

3. The wires should to be connected to a power source and routed through flex conduit for the Model BZ6. A power cord is provided on the Model BZ6A for connection to a 120V receptacle. The plug on this cord is NEMA #5-15. The BZ6AINTL is provided with a 3-wire power cord only;

no plug is provided. THE HEATER WILL BE DESTROYED IF CONNECTED TO IMPROPER SUPPLY VOLTAGE.

4. This equipment should be installed, adjusted, and serviced by qualified electrical maintenance personnel familiar with the construction and operation of electrical equipment and the hazards involved. It is the responsibility of the individual installing the ThermoGlo™ to take diligent care to mount and connect the electrical wiring so that it complies with the National Electrical Codes and Occupational Safety and Health Act (OSHA ).

THERMOGLO™ WITH ON/OFF SWITCH

1. This unit consists of a junction box and a switch designed to be mounted to the end of the heater. The switch is rated for a maximum of 12 amps at 120 volts, 208 volts, or 240 volts.

2. Before operating the ThermoGlo™ Downheater, set heat control switches (infinite switches) to 10 position on dial.

DAILY CHECKLIST AND CLEANING GUIDE TO

USE THE DOWNHEATER

1. Turn on the power switch.

2. The unit is ready to use after a 15 minute preheat period.

130522BZ6 RV092899 Copyright 1999 Marshall Air Systems, Inc.

MODELS BZ6, BZ6A, BZ6AINTL -THERMOGLO™ DOWNHEATER

CLEANING CHECKLIST

1. Turn off the unit and allow it to cool for 30 minutes.

2. Clean unit with a damp cloth and cleaner degreaser.

ONLY CLEAN WHEN THERMOGLO™ HAS COOLED! DO NOT IMMERSE UNIT IN WATER! DO NOT SATURATE HEATER SURFACES WITH WATER! DO NOT USE CAUSTIC, ABRASIVE OR CORROSIVE CHEMICAL CLEANERS! DO NOT USE SHARP OBJECTS TO SCRAPE CLEAN!

3. The ThermoGlo™ Downheater is enclosed in a stainless steel wrap. This heater is constructed so that heat expansion and cooling cycles may take place freely. Therefore, by no means is it water tight.

4. Allow sufficient drying time before attempting to use.

MONTHLY MAINTENANCE

1. Follow the Daily Checklist and Cleaning Guide. The only adjustments that can be made are the infinite controllers (see Figure 2 or Figure 4).

2. With proper maintenance procedures and consideration to heater construction, the ThermoGlo™ Downheater will give years of trouble-free operation.

TROUBLESHOOTING

* DISASSEMBLING HEATER VOIDS WARRANTY *

Identify problem in the left column and look for probable cause and solution in right hand column. Probable causes listed in the order they are most likely to happen. This sequence should be used to isolate the problem.

PROBLEM PROBABLE CAUSE SOLUTION

1. No Heat Unplugged Plug in

2. Low Product Temperature Infinite controller set too low Adjust to higher setting

Circuit breaker is tripped Reset breaker; call electrician if

tripped twice Cord/plug defective Replace cord/plug Controller "off' Turn knob "on" and to desired

position. Defective infinite controller Replace infinite controller

Excessive Air Draft(s) Shield Draft(s)

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