Lang RF21S-A, RF21S-C, RF21S-D, RF21S-G, RF21S-H Service Manual
Service Manual for the Lang Models:
RF21S-A, RF21S-C, RF21S-D, RF21S-G, RF21S-H
Lang Manufacturing Company 6500 Merrill Creek Parkway Everett, WA 98203
Phone: 1-800-224-5264 Fax: 1-425-349-2733
www.langworld.com ©Copyright 2002
TABLE OF CONTENTS
CHAPTER PAGE
1. TABLE OF CONTENTS .......................................................................1
2. READ FIRST........................................................................................2
3. EQUIPMENT DESCRIPTION ..............................................................4
4. INSTALLATION....................................................................................5
5. START-UP ...........................................................................................6
6. GENERAL OPERATION ...................................................................... 7
7. SEQUENCE OF OPERATION .............................................................9
8. TROUBLESHOOTING .........................................................................10
9. TECHNICAL DATA ..............................................................................12
10. WIRING DIAGRAMS............................................................................ 15
11. PARTS LIST.........................................................................................18
1
IMPORTANT READ FIRST IMPORTANT
CAUTION:
CAUTION:
CAUTION:
DANGER:
WARNING:
NOTICE:
NOTICE:
NOTICE:
CAUTION:
CAUTION:
EACH UNIT WEIGHS 600 LBS (THE TOP ONLY
WEIGHS 410 LBS). FOR SAFE HANDLING,
INSTALLER SHOULD OBTAIN HELP AS NEEDED, OR
EMPLOY APPROPRIATE MATERIALS HANDLING
EQUIPMENT (SUCH AS A FORKLIFT, DOLLY, OR
PALLET JACK) TO REMOVE THE UNIT FROM THE
SKID AND MOVE IT TO THE PLACE OF
INSTALLATION.
ANY STAND, COUNTER OR OTHER DEVICE ON
WHICH RANGE WILL BE LOCATED MUST BE
DESIGNED TO SUPPORT THE WEIGHT OF THE
RANGE.
SHIPPING STRAPS ARE UNDER TENSION AND CAN
SNAP BACK WHEN CUT.
THIS APPLIANCE MUST BE GROUNDED AT THE
TERMINAL PROVIDED. FAILURE TO GROUND THE
APPLIANCE COULD RESULT IN ELECTROCUTION
AND DEATH.
INSTALLATION OF THE UNIT MUST BE DONE BY
PERSONNEL QUALIFIED TO WORK WITH
ELECTRICITY. IMPROPER INSTALLATION CAN
CAUSE INJURY TO PERSONNEL AND/OR DAMAGE
TO EQUIPMENT. UNIT MUST BE INSTALLED IN
ACCORDANCE WITH ALL APPLICABLE CODES.
The data plate is located right of range top controls
and behind circuit breaker door on oven. The range
voltage, wattage, serial number, wire size, and
clearance specifications are on the data plate. This
information should be carefully read and understood
before proceeding with the installation.
The installation of any components such as a vent
hood, grease extractors, fire extinguisher systems,
must conform to their applicable National, State and
locally recognized installation standards.
During the first few hours of operation you may
notice a small amount of smoke coming off the
range, or out of the oven, and a faint odor from the
smoke. This is normal for a new range and will
disappear after the first few hours of use.
ALWAYS KEEP THE AREA NEAR THE APPLIANCE
FREE FROM COMBUSTIBLE MATERIALS.
KEEP FLOOR IN FRONT OF EQUIPMENT CLEAN
AND DRY. IF SPILLS OCCUR, CLEAN IMMEDIATELY,
TO AVOID THE DANGER OF SLIPS OR FALLS.
2
IMPORTANT READ FIRST IMPORTANT
WARNING:
CAUTION:
NOTICE:
WARNING:
CAUTION:
KEEP WATER AND SOLUTIONS OUT OF CONTROLS.
NEVER SPRAY OR HOSE CONTROL CONSOLE,
ELECTRICAL CONNECTIONS, ETC.
MOST CLEANERS ARE HARMFUL TO THE SKIN,
EYES, MUCOUS MEMBRANES AND CLOTHING.
PRECAUTIONS SHOULD BE TAKEN TO WEAR
RUBBER GLOVES, GOGGLES OR FACE SHIELD
AND PROTECTIVE CLOTHING. CAREFULLY READ
THE WARNING AND FOLLOW THE DIRECTIONS ON
THE LABEL OF THE CLEANER TO BE USED.
Service on this, or any other, LANG appliance must
be performed by qualified personnel only. Consult
your authorized service station directory or call the
factory at 1-800-224-LANG (5264), or
WWW.LANGWORLD.COM for the service station
nearest you.
BOTH HIGH AND LOW VOLTAGES ARE PRESENT
INSIDE THIS APPLIANCE WHEN THE UNIT IS
PLUGGED/WIRED INTO A LIVE RECEPTACLE.
BEFORE REPLACING ANY PARTS, DISCONNECT
THE UNIT FROM THE ELECTRIC POWER SUPPLY.
USE OF ANY REPLACEMENT PARTS OTHER THAN
THOSE SUPPLIED BY LANG OR THEIR AUTHORIZED
DISTRIBUTORS CAN CAUSE BODILY INJURY TO
THE OPERATOR AND DAMAGE TO THE EQUIPMENT
AND WILL VOID ALL WARRANTIES.
3
EQUIPMENT DESCRIPTION
ELECTRIC RANGE
EXTERIOR
¾ The Range dimensions are 30” (76.2cm) High, 38” (96.5cm) Deep, and 36” (91.5cm) Wide.
¾ The Sides, Bottom, and Rear wall are constructed stainless steel.
¾ The Range surface can come in 5 different configurations.
RANGE TOP CONTROLS
The RF21 Series Rang is available with various controls depending upon model number. Shown below is a
layout of each top configuration with its proper model number and a brief description of the controls. All
RF21S Ranges have the same type of convection oven, which has a thermostat that controls the overall
temperature of the oven.
RF21S-H
Six French plates controlled by six 6-
heat switches.
FRENCH
PLATE
FRENCH
PLATE
FRENCH
PLATE
FRENCH
PLATE
FRENCH
PLATE
FRENCH
PLATE
Three Hot Tops controlled by three
RF21S-C
850° thermostats.
HOT
PLATE
RF21S-A
One 24”x24” griddle controlled by Two 450° thermostats
and Two French plates controlled by two 6-heat switches.
FRENCH
PLATE
24" x 24"
GRIDDLE
FRENCH
PLATE
RF21S-G
One 36”x24” Griddle controlled by
one 450° thermostat.
HOT
PLATE
HOT
PLATE
36" x 24"
GRIDDLE
RF21S-D
Two 12”x24” Hot tops controlled by two 850° thermostats
and two French plates controlled by two 6-heat switches.
FRENCH
PLATE
HOT
PLATE
HOT
PLATE
FRENCH
PLATE
4
INSTALLATION
RECEIVING THE RANGE
Upon receipt, check for freight damage, both visible and concealed. Visible damage should be noted on the
freight bill at the time of delivery and signed by the carrier's agent. Concealed loss or damage means loss or
damage, which does not become apparent until the merchandise has been unpacked.
If concealed loss or damage is discovered upon unpacking, make a written request for inspection by the
carrier's agent within 15 days of delivery. All packing material should be kept for inspection.
Do not return damaged merchandise to Lang Manufacturing Company. File your claim with the carrier.
Prior to un-crating, move the range as near its intended location as practical. The crating will help protect the
unit from the physical damage normally associated with moving it through hallways and doorways.
ELECTRICAL CONNECTION
Place spacers, (ie. 2 x 4 wood block not supplied) at the front and rear of the oven top.
Place the range top on the spacers that are located on top of the oven.
The six wire leads to supply electricity to the cook top are bundled under the front bottom of the top. Route
these wires through the bushing provided in the oven top.
Align the four locating pins in the bottom corner of the top with the four holes in each corner of the oven top.
Remove the spacers and lower the top onto the oven.
CAUTION:
WARNING:
MAKE SURE THE SIX WIRE LEADS TO SUPPLY ELECTRICITY TO
THE COOK TOP ARE NOT CRIMPED BETWEEN THE OVEN AND
RANGE TOP.
MAKE SURE THE MAIN POWER SUPPLY TO THE RANGE IS
TURNED OFF AT THE SOURCE PRIOR TO CONNECTING POWER
TO THE RANGE.
The range can now be connected to power.
CAUTION:
Use the wiring diagram provided in this manual for determining the connections of the cook top wires to the
oven terminal block.
Electrical service connection is made through the bottom of the oven. A hole is provided for the attachment of
1-1/4 inch conduit. See figure #2 on Page #2.
Use the wiring diagram provided in this manual to determine the electrical specification.
CAUTION:
BE SURE THE POWER SUPPLY VOLTAGE MATCHES THE
VOLTAGE SPECIFIED ON THE NAMEPLATE LOCATED ON THE
FRONT OF THE RANGE.
THE RANGE MUST BE PHASED PER THE WIRING DIAGRAM.
PHASING
POWER
SUPPLY
PHASE
THREE
PHASE
TERMINAL
BLOCK
L1 1,3,5SINGLE
L2 2,4,6
L1 3
L2 1,5
L3 2,4,6
RANGE
TOP
5
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