Universal Scheu Company 35-R - Manual (Page 6)

6
Operating Instructions and Owner’s Manual
NOTE: In cases where long runs of gas supply lineshave
been installed ahead of the appliance, it may be necessary
to bleed trapped air out of the supply lines before lighting
the burner. New installations generally require bleeding of
supply lines. Wait a minimum of five minutes after
bleeding the supply lines before attempting to light the
heater.
6. IMPORTANT: DO NOT attempt to adjust the main
burner input using the main gas supply valve, for
this may cause the thermocouple to shut down the
burner.
Shut-down instructions:
To turn the heater OFF:
1. Close the LP-Gas supply cylinder valve.
2. Observe the burner until flame is extinguished.
3. Listen for closure of the safety valve.
4. IMPORTANT: DO NOT re-open the LP-Gas supply
cylinder valve before the safety valve closes.
MAINTENANCE INSTRUCTIONS
This heater (including hose and regulator assembly) must be
inspected before each use. If the hose for Model 35-R
shows evidence of excessive abrasion or wear, or if the
hose is cut, it must be replaced prior to the heater being put
into operation. The replacement hose assembly shall be
that specified by the manufacturer. See the parts list.
The appliance area must be kept free and clear of
combustible materials, gasoline and other flammable
vapors and liquids at all times.
The flow of combustion and ventilation air must not be
obstructed.
Cleaning the heater:
Periodically, the heater must be cleaned of all dirt and dust
particles.
DANGER
DO NOT ATTEMPT TO CLEAN THE HEATER
WHILE IT IS OPERATING OR WHILE IT IS
STILL HOT.
• Turn the heater off and wait until it has completely cooled
(at least 20 minutes) before cleaning.
• Clean the outside of the heater using a damp cloth. DO
NOT clean the heater by spraying water on it. Wipe the
outside of the heater off with a dry cloth after cleaning.
• Clean the inside of the heater using compressed air.
Blow air back and forth along the entire burner face
until all dust has been dislodged from the surface of
the reverberator and grid screen. Blow through venturi
from the control end of the heater.
• Clean the orifice of each burner with a #55 drill bit
(for LP-Gas).
• Clean the thermocouple lead.
DO NOT operate this heater if any part has been under
water. Call a qualified service person to inspect the appliance
and to replace any part of the control system or gas control valve
which has been under water.
This heater must be inspected at least annually by a
qualified service person.
TROUBLESHOOTING INFORMATION:
(Model 35-R)
If burner lights, but goes out when button is released.
CHECK
• Loose wires on tipover switch. (see Fig. 4)
• Loose lead wire and repair wires if necessary.
•
Loose thermocouple and tighten if necessary.
Make sure T/C is located correctly between the
reverberator and grid.
• Defective thermocouple. Replace if necessary.
• Defective control. Replace if necessary.
• Defective tip over switch. Replace if necessary.
Figure 3
NOTE: WHEN LIGHTING BURNER WITH A MATCH OR TAPER,
LIGHT AT BOTTOM OF SCREEN. (NOT AT ORIFICE)
Expanded Metal Screen
Burner Face
Reflector
Thermocouple
Orifice
Control
Valve
Reet
Button
Cylinder
Gas Valve
Propane
Gas
Cylinder
Regulator
Hose