Marshall Air BZ4 Service Manual
OWNER'S MANUAL
MODEL BZ4 - OVERSHELF HOLDING UNIT
Supplier Name: MARSHALL AIR SYSTEMS, INC.
Address: 419 Peachtree Drive South
Charlotte, NC 28217
Serial #'s: _____________________
_____________________
_____________________
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
This Heated Overshelf Unit features Marshall's own
ThermoGlo™ heating technology. Heat radiates from
every square inch of the upper flat plate heating
surface. This eliminates the need to clean intricate
calrod, wire and reflector assemblies.
Each shelf is independently controlled by an infinite
control concealed on the inside of the overshelf control
box. The independent controls determine the intensity
of each heater. An On/Off switch is accessible to the
store personnel allowing them to turn the unit on or off
only. The Heated Overshelf Unit offers the latest in
technological design which gives you the most
favorable holding characteristics in a system that is
simple to work with and operate.
GENERAL SPECIFICATIONS
Model #: BZ4
Height: 16"
Width: 41.750"
Depth: 20"
Electrical: 208 volts , 14.5 amps
Weight: 104lbs.
Approvals: UL and NSF
130520BZ4 RV082799
Copyright 1999 Marshall Air Systems, Inc.
All Rights Reserved.
OWNER'S MANUAL
MODEL BZ4 - OVERSHELF HOLDING UNIT
TABLE OF CONTENTS
INSTALLATION.............................................................................................. 1
DAILY CLEANING CHECKLIST AND CLEANING GUIDE ............................ 1
MONTHLY MAINTENANCE.........................................................................., 2
TROUBLESHOOTING ................................................................................... 2
THERMOGLO™ & HEATED HOLDING CABINET LIMITED WARRANTY 3
THERMOGLO™ & HEATED HOLDING CABINET WARRANTY RETURN
PROCEDURES.............................................................................................. 4
ILLUSTRATIONS
MODEL BZ4 HOLDING UNIT ........................................................................ FIGURE 1
MODEL BZ4 HOLDING UNIT REPLACEMENT PARTS................................ FIGURE 2
CONTROL BOX REPLACEMENT PARTS..................................................... FIGURE 3
WIRING SCHEMATIC, BZ4 208V.................................................................. 129896
130520BZ4 RV082799
Copyright 1999 Marshall Air Systems, Inc.
All Rights Reserved.
MODEL BZ4 - OVERSHELF HOLDING UNIT
1
INSTALLATION
PRE-INSTALLATION
The Overshelf Holding Unit is packaged to minimize the risk of shipping damage. Immediately upon receipt, make
certain to inspect the unit for damage. FILE ALL CLAIMS WITH THE FREIGHT CARRIER.
FINAL INSTALLATION
1. Unpack unit and remove all protective paper or plastic covering from metal parts.
2. Before operating the overshelf holding unit, set heat control switches (infinite switches) to 51/2 position
on dial.
3. Install unit on shelf.
4. Have an electrician wire the unit with a plug for 208V, 1 PH, 20 amps.
DAILY CHECKLIST AND CLEANING GUIDE
TO USE THE OVERSHELF
1. Turn on the power switch. The infinite switches are enclosed in the control box. The unit is ready to use
after a 30 minute preheat period.
2. The unit is factory set, however, if a new setting is required, first unplug the unit and open the control
box cover door. The terminals on the On/Off switch will be exposed when the cover is off so again be
sure to unplug the unit or cut it off at the circuit breaker. The two infinite switches will be visible when
the cover is removed. Make your new settings, close the cover, plug unit in and turn back on.
CLEANING CHECKLIST
1. Turn off the unit and allow it to cool for 20 minutes.
2. Pans and/or wire grates should be removed, washed in mild multi-purpose detergent, rinsed and
sanitized.
3. Clean unit and base with a damp cloth or non-abrasive cleaner. DO NOT IMMERSE UNIT IN WATER!
DO NOT USE CAUSTIC CLEANING SOLUTIONS!
4. Allow sufficient drying time before attempting to use.
130520BZ4 RV082799
Copyright 1999 Marshall Air Systems, Inc.
All Rights Reserved.
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