SECTION Page
General Information............................................................................................................................3
Torch Specification..............................................................................................................................3
Safety Precautions..............................................................................................................................4
User Instructions.................................................................................................................................7
Torch Assembly....................................................................................................................................8
Connecting the Torch to the Propane Gas Supply.............................................................................8
Lighting Instructions...........................................................................................................................9
Shut-Down Instructions......................................................................................................................9
Cleaning Instructions..........................................................................................................................9
Maintenance Instructions.................................................................................................................10
Service Instructions...........................................................................................................................10
Troubleshooting Information.............................................................................................................10
Torch Component Function...............................................................................................................11
Parts dentification.............................................................................................................................11
Warranty Policy..................................................................................................................................12
Replacement Parts and Service.......................................................................................................12
This Owner's Manual includes all options and
accessories commonly used on this torch.
When calling for technical service assistance,
or for other specific information, always have
complete model number, and serial number
available. This information is contained on the
dataplate.
This manual will instruct you in the operation
and care of your torch. Have your qualified in-
staller review this manual with you so that you
fully understand the torch and how it
functions
.
The repair and servicing of the torch requires
continuing expert training and knowledge of
gas appliances and should not be attempted
by anyone who is not so qualified. See page 5
for definition of the necessary qualifications.
Contact your local L.B.White distributor or
L.B.White Co. for assistance, or if you have any
questions about the use of the equipment or
its application.
L.B.White Company has a policy of continuous
product improvement. It reserves the right to
change specifications and design without
notice.
General Information
3
Heater Specifications
173B
Fuel Type
Propane Vapor Withdrawal
Maximum Input (BTUH)
300,000
Fuel Consumption Per Hour (lb)
13.9
6 ft. (1.83 m)
5 lb. 2 oz.
SPECIFICATIONS
Model
Net Weight
(Includes Gas Hose, Regulator and Valve
Minimum Safe Distance From
Propane Gas Supply Container
Gas Supply Pressure Required at the
Torch Inlet (PSI)
25
10
■
The area surrounding the torch shall be
kept clear and free from combustible
materials, gasoline, and other flamma-
ble vapors and liquids.
■
Review labels at the time of mainte-
nance for legibility. Make sure none are
cut, torn, or otherwise damaged. Any
damaged labels must be replaced im-
mediately by contacting L.B.White. La-
bels are avaialble at no cost.
Maintenance Instructions
Service Instructions
■
Close the fuel supply valves to the torch
and allow the torch to cool before servic-
ing
■
Do not push instruments into the burner
orifice hole. Doing so may enlarge or dis-
tort the hole creating improper combus-
tion,or burner flame blow out.
-- Use only a soft brush, dry rag, or
pressurized air to clean the burner
orifice.
■
Do not use pliers to loosen or tighten
torch components. Doing so may round
off the component creating service prob-
lems. Use the appropriate wrench.
■
Observe the flow direction arrow on the
safety control valve and manual valve
when installing replacements.
■
Leak check all gas connections after per-
forming service work. Use approved leak
detectors.
Troubleshooting Information
PROBLEMS
CAUSES REMEDIES
1. Burner will not light.
* Valve closed on torch *Open valves.
or at fuel supply.
* Cylinder or tank low on fuel. *Fill cylinder/ tank.
* Burner orifice plugged. *Clean the burner
orifice.
* Gas hose blocked. *Remove hose
and blow out
with air.
2. Burner flame lifting
* Blockages in burner orifice or at * Clean with soft
off burner, or burner
primary air inlets of burner. brush, dry cloth,
flame blows out.
* Gas pressure too high. * Set pressure to
25 PSI.
3. Burner flame is small.
* Gas supply valves not fully open. *Open all valves.
* Burner orifice plugged. *Clean it.
* Cylinder low on fuel. *Replace or refill.
* The check valve in POL fitting *Close fuel supply
is locked. valve and wait
to allow check
valve to reset.
4. Burner lights but goes out after * Insufficient time to allow *Allow 30 seconds
releasing button on safety control.
thermocouple to warm up. to warm up.
* Loose thermocouple at control valve.* Tighten it.
* Defective thermocouple. * Replace it.
* Defective safety control valve. * Replace it.
11
