Lang Manufacturing USN-50 Parts List
TM...................................
TECHNICAL MANUAL
MODEL DESCRIPTION
USN-50 Fryer, Deep-Fat, Electric w/Solid State Controls
440 Volt, 60 HZ, 3 Phase
NSN: _________________________
Commercial & Marine Cooking Equipment
Gas & Electric
Last Updated September 14, 2006
Installation
Operation
Maintenance
USN-50 FRYER
TABLE OF CONTENTS
TABLE OF CONTENTS............................................................................................................................1
WARNINGS................................................................................................................................................2
SPECIFICATIONS..................................................................................................................................... 3
INSTALLATION INSTRUCTIONS......................................................................................................... 4
DATAPLATE...............................................................................................................................................4
ELECTRICAL
Safety Circuit Connections........................................................................................................................4
Phasing And Ground Connection .............................................................................................................4
OPERATING INSTRUCTIONS...............................................................................................................5
LEVELS .............................................................................................................................................. 5
FILL
CONTROLS ................................................................................................................................................. 5
LIMITING
HEATING
DRAINING
MAINTENANCE INSTRUCTIONS......................................................................................................... 8
CLEANING..................................................................................................................................................8
TEMPERATURE
OVER-TEMPERATURE
COMPONENT
TECHNICAL
CALIBRATION ...........................................................................................................................................9
A. Checking Temperature....................................................................................................................... 10
B. Accessing Temperature Control Components....................................................................................10
C. Checking Probe ................................................................................................................................. 11
D. Checking Selector Switch..................................................................................................................12
E. Calibration of Temp Control Board .................................................................................................. 12
SERVICE ENTRANCE....................................................................................................... 4
CONTROLS ..............................................................................................................................6
ELEMENTS...............................................................................................................................7
THE FRYER OIL.....................................................................................................................7
CONTROL......................................................................................................................8
PROTECTION.................................................................................................... 8
ACCESS..............................................................................................................................9
SUPPORT.............................................................................................................................. 9
WIRING DIAGRAM................................................................................................................................ 13
PARTS LIST ............................................................................................................................................. 14
WARRANTY.............................................................................................................................................15
LANG MANUFACTURING
6500 Merrill Creek Parkway
Everett, WA 98203
FOR PARTS AND TECHNICAL SUPPORT CALL:
Toll Free: PH 800-224-5264
Direct Line: PH: 425-349-2400
Fax Number: PH: 866-723-0214
1
WARNINGS
IMPORTANT READ FIRST IMPORTANT
DANGER: 1.) THIS APPLIANCE MUST BE GROUNDED AT THE TERMINAL
PROVIDED. FAILURE TO GROUND THE APPLIANCE COULD
RESULT IN ELECTROCUTION AND DEATH.
WARNING: 1.) INSTALLATION OF THIS LANG FRYER MUST BE DONE BY
PERSONNEL QUALIFIED TO WORK WITH ELECTRICITY.
IMPROPER INSTALLATION CAN CAUSE INJURY TO PERSONNEL
AND/OR DAMAGE TO THE EQUIPMENT. THE UNIT MUST BE
INSTALLED IN ACCORDANCE WITH ALL APPLICABLE CODES.
2.) ALWAYS KEEP THE AREA NEAR THE APPLIANCE FREE FROM
COMBUSTIBLE MATERIALS.
3.) BEFORE PERFORMING ANY WORK ON INTERNAL COMPONENTS,
DISCONNECT THE APPLIANCE FROM THE ELECTRIC POWER
SUPPLY.
4.) KEEP WATER AND SOLUTIONS OUT OF CONTROL AND
ELECTRICAL EQUIPMENT. NEVER SPRAY WATER ON THE
APPLIANCE WHICH MAY PERMIT LIQUID TO GET INTO THE
CONTROL AND ELECTRICAL EQUIPMENT AREAS.
CAUTION: 1.) KEEP FLOOR IN FRONT OF EQUIPMENT CLEAN AND DRY. IF SPILLS
OCCUR, CLEAN IMMEDIATELY, TO AVOID THE DANGER OF SLIPS OR
FALLS.
2.) MOST CLEANERS ARE HARMFUL TO THE SKIN, EYES, MUCOUS
MEMBRANES AND CLOTHING. PRECAUTIONS SHOULD BE TAKEN TO
WEAR RUBBER CLOVES, GOGGLES OR FACE SHIELD AND
PROTECTIVE CLOTHING. CAREFULLY READ THE WARNING AND
FOLLOW THE DIRECTIONS ON THE LABEL OF THE CLEANER TO BE
USED.
3.) USE OF ANY REPLACEMENT PARTS OR OTHER THAN THOSE SUPPLIED
BY LANG OR THEIR AUTHORIZED DISTRIBUTOR CAN CAUSE BODILY
INJURY TO THE OPERATOR AND DAMAGE TO THE EQUIPMENT AND
WILL VOID ALL WARRANTIES.
NOTICE: 1.) NEVER LEAVE A CHLORINE SANITIZER IN CONTACT WITH STAINLESS
STEEL SURFACES LONGER THAN 10 MINUTES. LONGER CONTACT CAN
CAUSE CORROSION.
IMPORTANT: 1.) SERVICE PERFORMED BY OTHER THAN FACTORY AUTHORIZED
PERSONNEL WILL VOID ALL WARRANTIES.
2
SPECIFICATIONS
POWER:
VOLTAGE
AMPS (1 PHASE)
AMPS (3 PHASE)
22 kW
440 VAC
50 Amps
43.3; 25; 25
Capacity
EIGHT
W
Ship Weight
Ship Dimensions
3
50 Lb. Oil
138 lb.
170 lb.
41” X 36” X 18”
INSTALLATION INSTRUCTIONS
DATAPLATE
Check the data plate located on the back of the machine for fryer electrical rating. Check power
source to insure that it is the correct voltage and current rating.
ELECTRICAL SERVICE ENTRANCE
Electrical service may be made through a standard 1¼ inch conduit. A hole is provided through
the rear panel. A knockout is also provided in the bottom rear of the fryer, so that power may be
brought in from below the unit. Plug the hole on the rear panel when using bottom power entry.
Check the National Electrical Code for fuse for circuit breaker requirements.
SAFETY CIRCUIT CONNECTIONS
Fire Control Shutoff
A four pole terminal block is provided behind the rear access cover for connection to an external
fire control system if required. A jumper is provided across two of these terminals when the
fryer leaves the factory. The jumper on this terminal block is in series with the power switch
circuit. If connection to a fire control system is required, remove this jumper and supply a relay
contact closure to maintain this closed circuit. If the fire control system does not have this type
output, a separate relay must be provided to interface the system. DO NOT APPLY
VOLTAGE TO THIS CONNECTION.
Shunt Trip Circuit
Two terminals are provided on the four pole terminal block for a shunt trip circuit. Connect your
115 volt shunt trip circuit to these terminals.
Phasing And Ground Connection
Connect a ground lead to the green ground lug provided in the rear compartment.
These fryers may be connected to either single or three phase power as indicated in the table
below:
SERVICE CONNECTION AMPS PER LINE @ 440VAC
THREE L1
PHASE L2
L3
SINGLE L1
PHASE L2
1 & 4
2 & A 43.3 25 25
3 & B
1, 3, A 50 50
2, 4, B
L1 L2 L3
4
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