US COOKING EQUIPMENT USFH-12-2 User manual

Gas Countertop Hot Plates/Cooktops
Operating Instructions
Please read the following instructions carefully, to ensure the best
performance and safety while using this product.
Models: USFH-12-2/ USFH-24-4 / USFH-36-6

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Dear customers and users：
Thank you for purchasing our product! In order to get the most out of this
product, please read these instructions carefully before any operation. Follow the
guide, to avoid damage or injury.
Please keep this instruction manual for convenient reference and operation.
This instruction manual is subject to change without further notice, and the
manufacturer reserves the right of final interpretation.
The appliance is designed for commercial purposes, not for household use.
A statement instructing the purchaser to post in a prominent location
instructions to be followed in the event the user smells gas. This information shall
be obtained by consulting the local gas supplier.

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Gas Countertop Hot Plates/Cooktops
The Installation, Operation and Maintenance Guide
Contents
Safety Protection ……………………………………………………3
Brief Introduction……………………………………………………3
Manufacturer's Authority and Responsibility ………….…………3
Parameter Specifications……………………………………………4-6
Transport and Storage ………………………………………………7
Installation and Debugging…………………………………………7-9
Safety Notices and Precautions……………………………………10
Operating Instructions……………………………………………11-12
Cleaning and Maintenance………………………………………13-14
Troubleshooting ……………………………………………………15
Spare Parts………………………………………………………17-19
Accessories List……………………………………………………20

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Safety Protection
Ensure that the operator is an authorized and licensed technician before allowing
him/her to install and operate the product. Be sure to strictly follow this instruction guide
during installation and use. Manufacturer is not responsible for any danger or accidents
caused by improper operation or maintenance.
Do not store flammable or explosive objects around the product. Keep all flammable
and explosive objects at a safe distance away from the product for normal use.
Place the product in a reasonable position. Regarding related matters of gas,
customer should execute the requirements of local gas supply sector.
If you smell a gas leak, turn off the gas valves immediately and call the gas company.
The product should only be operated by experienced persons over the age of 18, in
good mental and physical health.
Brief Instruction
The product is a series of gas char broilers in our company production. Which is
quality designed, reasonably structured, conveniently operated, durable, and
conveniently maintained. Equipped with a cast-iron burner, high efficiency stainless steel
tubular burner and pilot light, to conveniently ignite the main fire burner. This is hotel,
supermarket, western restaurant, and food industry's ideal cooking product equipment.
Manufacture’s Authority and Responsibility
Banning of all or partial transformation to the products without the
manufacturer's explicit authorization.
Manufacturers refused to undertake responsibility to third parties as the
following reasons:
Not following this instruction guidance and warning in in using and testing.
Not in accordance with the requirements of technical parameters using this
product.
Incorrectly or irrationally using the product by untrained personnel.
Not obeying the local law using this product.
Repairs or changes made by unauthorized technicians.
Use of spare parts or accessories provided by non-manufacturers.
Accidents caused by force.
Not strictly complying with related guide of instruction for any reason.

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Parameter Specifications
Outline Dimensions (in)*
USFH-12-2
USFH-24-4

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USFH-36-6

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Information of Gas Supply and Burner
The minimum supplied gas pressure regulator is factory set at 4”Natural Gas
W.C, and 10”L.P. Gas W.C. The external thread of product’s intake-tube is 3/4 inches.
Table 1
Model
#of burners
and control
method
Gas
Species
Intake-tube
pressure
（in W.C.）
Per BTU
B.T.U./h
Total BTU
B.T.U./h
Nozzle
No.
USFH-12-
2
2 pieces
Independent
control
Natural
Gas
4
25,000
50,000
#43
L.P. Gas
10
25,000
50,000
#53
USFH-24-
4
4 pieces
Independent
control
Natural
Gas
4
25,000
100,000
#43
L.P. Gas
10
25,000
100,000
#53
USFH-36-
6
6 pieces
Independent
control
Natural
Gas
4
25,000
150,000
#43
L.P. Gas
10
25,000
150,000
#53

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Transport and Storage
During transportation, handle carefully and keep upright to prevent damage of the
product packing. Wrapped equipment should not be in open air for a long period of time,
and shall be placed in a well-ventilated and non-corrosive gases warehouse. When
equipment needs temporary storage, rainproof measures should be taken.
Installation and Debugging
Any erroneous installation, adjustment, refit, overhaul or maintenance may cause
property damage or personal injury. The work shall be performed by authorized and
licensed technicians; otherwise the manufacturer has the right to void warranty service.
Must be installed in accordance with the local code. If no similar standard, you should
conform to the National Fuel Gas Code, ANSI Z223.1/NFPA 54, the National Gas
Installation Code, CSA-B149.1, or the L.P. Gas Installation Code, CSA-B149.2 as
applicable.
The appliance shutoff valve must be disconnected from the gas supply piping system
during any pressure testing of that system at test pressures in excess of 1/2psi (3.45kPa).
Unpacking and Installation
Please dispose of all packaging materials and residues after unpacking.
Check the equipment. If it is damaged, please keep packing materials and receipts
signed by the carrier representative (Driver), and contact the carrier to pursue a claim
within 15 days after receiving.
Check all accessories complete. Refer to P table 5;
Install supporting legs before using, and do not tear up any label or logo before use.
Please read these instructions carefully before installation and operation. Please
contact your local agent if you have any questions;
The char broiler shall be installed on a level, solid, non-skid and incombustible
surface, and placed in a well-lit waterproof work area, and away from children and
customers.
The installation position is a well-ventilated place in accordance with the local
regulations.

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The char broiler must be installed under the matched cooking fume exhauster according to
the local regulations.
Important: Installation and ventilation laws and codes are very different, should state
and comply with all codes of the National Fire Protection Association Inc. when it comes
to requirements for installation of equipment.
Screw 4 adjustable stainless steel legs in the tapping hole with 4 corners of the
charbroiled bottom, ensure sufficient space for ventilation.
Adjustable stainless steel legs to make the equipment level, and get the same level
with other series of the same stove; please lift the equipment rather than drag if needs
moved.
Supplied gas pressure regulator is factory set at 4”Natural Gas W.C, and 10”L.P. Gas
W.C.
The equipment can only be placed on an incombustible counter top, and keep a
distance of at least 6 inches(152mm) to equipment’s sides and back, and keep a distance
of at least 4 inches(102mm) to the bottom.
Do not put anything around the equipment, on the counter top and bottom, in order to
avoid combustion and air circulation.
Leave enough distance in front of the equipment to take apart the control panel. All
major parts, in addition to the burner remove from the front intake-tube.
It may be necessary to adjust the balance of air input by authorized and licensed
technicians.
Thread glue must be resistant to the action of liquefied petroleum gases.
Warning! Use soap water or testing instrument to test whether piping joint leaks
before using, and forbid using an open flame to test!
After installing completely, check gas supply pressure. Use a pressure gauge which
is equipped with liquid (such as U-type pressure gauge, the minimum value is 0.1mbar) or
a digital pressure gauge to test.

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Steps are as follows:
●Remove top panel, and needle type pressure joint screw arbor (Fig.1), then slip
rubber tube of pressure gauge over needle type pressure joint;
●Start the equipment in accordance with the instructions, measuring gas supply
pressure (dynamic pressure) in the work state;
●Access to the equipment if measured data within the limits of Table 1, otherwise,
you will need to adjust gas pressure regulating valve or contact gas supplier to
bargain;
●Unplug pressure gauge after you accomplish
Pressure testing, then install needle type pressure joint screw arbor.
* Important: must screw joint screw arbor, to prevent gas escape!
Fig. 1
Debugging
It’s very important to debug the new stove. Through the comprehensive system test
of equipment, we can ensure function and safety performance of our products.
Discovering any potential problems before use (such as equipment’s placement,
ventilation, operation, etc.), can avoid costly losses.

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Safety Notices and Precautions
Warning! For your safety, do not place petrol and other flammables nearby. Please
keep clean and free of flammables surroundings. (Read ANSI Z83.14B, 1991 for
reference)
Warning! Any erroneous installation, adjustment and refit may cause property
damage or personal injury and maintenance failure. Read the instructions carefully before
installation and using.
Warning! Operation instruction must be placed in a conspicuous location. If
customers smell gas during use, take safety precautions immediately. Immediately turn
off the main gas valve, extinguish all heat and flames, and call 911. Safety information
can be obtained from your local gas suppliers.
When using this equipment, safety precautions should always be followed, including the
following:
The hot plates/cooktop burners, cooking grates and outside surfaces may become
hot after use, do not touch.
During operation, do not directly touch burners and cooking grates.
Turn off the equipment while repairing, maintaining or cleaning.
If the equipment has any problems or equipment damage, gas piping leaks, igniter or
valve damage, or lose product accessories, do not operate, and call for service
immediately.
The use of attachments not recommended or sold by the manufacturer may cause
fire, personal injury or even death.
Do not use outdoors.
The equipment is used for cooking, not for any other use.
The equipment does not contain any user-serviceable parts. Dealers or technicians
will repair it. Do not take apart any spare parts without authorization.
Never change any other parts without authorization to this equipment, doing so may
cause hazards. Manufacturer has the right to void warranty service.
Steel cutting producers used to manufacture with sharp edges. The manufacturer
has dealt with these sharp edges during production; we insist the operator take care
when in contact with this piece of equipment.
Always keep hands, hair and clothing away from heating source.
Allow unit to cool down before cleaning.

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Operating Instructions
Before operating, make sure to place the unit horizontally by adjusting bottom
adjustable legs, and place the catch tray properly.
The pilot light has been set at the factory. Each burner has a pilot light.
Lighting the pilot light
Turn the control valve at the position of “0”(Fig.2), make sure all knobs are in the
same position. Light and hold an ignition source at the pilots. The pilot light may not be
lighted immediately, for existing gas in the pipe. Wait a minute; the pilot light will be
lighted after the gas is extinguished.
Tips: You can use a screwdriver to adjust the height of the flame (Fig.3).
Igniting the main burner
Revolve the main fire control valve knob anticlockwise after lighting the pilot light, the
main fire burner is lighted by the pilot light. The power of burner increases as revolving
angel increases. When knob reaches to " ", burner is in the maximum power (Fig.4).
Fig.2 Fig.3 Fig.4
Make sure there is air circulation at the bottom of equipment.
Do not use fan or air-conditioning blowing at the flame, in order to avoid extinguishing
flame and cause safety accidents.
Install the matched cooking fume exhauster according as the local regulations over
the char broiler.
Make sure to keep natural air circulation in the kitchen.
Turn off the valve
Revolve the control valve knob clockwise to "0" (Fig.2), to extinguish flame of the
main burner, but the pilot light still works.
Turn off the equipment; the main fire should be stopped more than 5 minutes before
next use.

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Stove Operation
Before using the stove for the first time, use a mild detergent to wipe it clean. Do not
use corrosive or abrasive detergents.
Turn the burners on about 15-20 minutes before broiling for preheating, according to
the cooking requirement to adjust the flame size.
Notice: When first preheating, the furnace will smoke above. This is caused by
protective lipids on the grates and other parts are heated, it is normal, and it will be
eliminated after the power up to the maximum for burning an hour.
Exchange main fire nozzle to switch gas source
Remove control panel, cooking grates, the pilot light head, and burner. Remove
main fire nozzle with proper open spanner. Exchange nozzle of another gas source.
Reinstall burner, the pilot light head, cooking grates and control panel in proper order.
Caution: Each main fire orifice of the burner has been installed before delivery,
normal use without adjustment but only switching gas. Adjust only by authorized and
licensed technicians. When you converse the gas source, exchange the corresponding
pressure maintaining valve which installed on air intake. See 2 in P17.
Adjust air input
Remove control panel, unscrew damper solid screw (Fig.6), revolve damper left to
right (Fig.7), meanwhile, observe flame, to adjust to an appropriate opening degree. Then
screw damper solid screw, make sure the equipment will not get loose in the process of
moving and transition. Reinstall control panel.
Caution: Each burner damper has been adjusted before delivery (once air input),
normal use without adjustment but only switching gas. Adjust only by authorized and
licensed technicians.
Fig.5 Fig.6 Fig.7

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Cleaning and Maintenance
Do not use any abrasive or flammable detergent to wipe clean.
Do not hose down immerse or pressure wash any part of the cooker, excluding the
catch tray.
Do not use abrasive solutions to clean.
Warning: Before cleaning, all control valves must be turned off. Strictly follow the
lighting instructions to work again after cleaning!
Warning: Wait for the equipment to cool down after the unit has been turned off
before you clean!
Cut off the gas source when not in use.
If the equipment is not used for a long time, clean the surface by wiping it with a soft
cloth and place it in a well-ventilated area.
Comprehensively check the equipment at least once every year by authorized and
licensed technicians.
The product is made of 90% metals, and cannot be discarded everywhere. Check in
accordance with the local codes.
Instructions to clean appliance regularly with recommended cleaning agents, if
necessary.

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Recommended cleaning methods
Table 2
Items
Methods
Times
Body
Wipe it with a soft cloth and mild detergent;
Daily
Control panel
Turn off valves when not in use;
Wipe panel and control valve knob with mild
detergent.
Daily
Catch tray
Pull out catch tray from front body until the
equipment cools down. Use a cloth with
cleaning agent to wipe unit surface, wipe up
residue. Reinstall after cleaning.
Warning: If the catch tray is permitted to fill
too high, should be cleaned!
Per use

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Troubleshooting
Table 3
Problems
Possible causes
Problem solving
Not lighting
1.Insufficient gas pressure in
pipe
1.Contact the local
gas supply dept.
2.Nozzle occlusion
2.Dredge nozzle
Ignite the pilot
light but not
the main fire
1.Insufficient gas pressure in
pipe
1.Contact the local
gas supply dept.
2.The main fire nozzle
occlusion
2.Dredge nozzle
3.Gas control valves have
problems
3.Change gas control
valves
4.The pilot light and the main fire’s
distance is too far
4.Adjust the distance
of them
5.Flame is too low
5.Adjust the height of
the pilot light
Close gas
and heard a
sound of fire
1.Insufficient gas pressure in
pipe
1.Contact the local
gas supply dept.
2.Not match nozzle aperture with
gas resources
2.Adjust nozzle
diameter
3.Flow of connection pipe is
not enough
3.Increase pipe’s
allowable flow

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4.Damper opening degree is
too large
4.Adjust damper
Yellow flame
and black
smoke
1.Use bottom gas
1.Change gas
2.Not match nozzle aperture with
gas resources
2.Adjust nozzle
diameter
3.Not enough air to ignite
3.Increase damper
opening degree
4.In the peak of using gas,
sources of gas float heavy
4.Turn down valves
flow. Turn it up after
the peak
The problems mentioned above are only for reference. If any fault occurs, please
stop use, and contact authorized technician to check and repair. Be sure to turn off
the power and gas supply before maintenance.

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Spare Parts
The use of parts provided by other companies, our company has the right to void
warranty service.
Order replacement parts from authorized representatives and after-sale service
agency.
Provide the model number, serial number and description when you order
components.
5431
2
6
78
9101112
1415
3
1617
19
18
20
21
23
22
24
26
27
29
13
25
28
Fig.8

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Table 4
No.
Matters
Code
Component
name
Qty
Dimensions
Remark
(mm)/Model
1
3.01E+08
Adjustable steel
legs
4
φ41.5*100
USFH-12-2
USFH-24-4
USFH-36-6
2
2.11E+10
Catch tray
1
507*620*26.5
USFH-12-2
2.11E+10
807*620*26.5
USFH-24-4
2.11E+10
1107*620*26.5
USFH-36-6
3
3.01E+08
Galvanized
American
outside six
corner with pad
tapping
8
ST4.8*12.5
USFH-12-2
USFH-24-4
USFH-36-6
4
3.01E+08
Kirsite knob
2
USFH-12-2
4
USFH-24-4
6
USFH-36-6
5
2.11E+10
Control panel
1
605*185
USFH-12-2
2.11E+10
905*185
USFH-24-4
2.11E+10
1205*185
USFH-36-6
6
2.12E+10
surround
1
310*640*203
USFH-12-2
2.12E+10
2.12E+10
610*640*203
USFH-24-4
910*640*203
USFH-36-6
7
3.01E+08
A18 stopcock
2
A18-318
USFH-12-2
4
USFH-24-4
6
USFH-36-6
8
3.01E+08
A18 NAT.GAS
nozzle NG43
2
USFH-12-2
3.01E+08
A18 L.P.GAS
nozzle LP53
4
USFH-24-4
6
USFH-36-6
9
3.01E+08
Pilot light
valve-double
unit
1
AP6-1
USFH-12-2
2
USFH-24-4
3
USFH-36-6

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10
Air input
pipe-short
1
USFH-12-2
2
USFH-24-4
3
USFH-36-6
11
Air input
pipe-long
1
USFH-12-2
2
USFH-24-4
3
USFH-36-6
12
2.11E+10
Nozzle stator
2
USFH-12-2
4
USFH-24-4
6
USFH-36-6
13
3.01E+08
Pilot light
head
2
A73007/TiPφ4.7
USFH-12-2
4
USFH-24-4
6
USFH-36-6
14
3.01E+08
Needle type
pressure joint
1
1/8"-27NPT
USFH-12-2
USFH-24-4
USFH-36-6
15
3.01E+08
Needle type
pressure joint
screw arbor
1
M5*23
USFH-12-2
USFH-24-4
USFH-36-6
16
3.02E+08
Damper
cover
2
USFH-12-2
4
USFH-24-4
6
USFH-36-6
17
3.01E+08
Stainless
steel cross
recess head
screw
2
M4*8
USFH-12-2
4
USFH-24-4
6
USFH-36-6
18
3.01E+08
Short ejector
1
USFH-12-2