Weber Platinum 3400 LP User manual

WARNING: Do not try to light this
appliance without reading "Lighting"
instructions section of this manual.
THIS GAS APPLIANCE IS DESIGNED FOR
OUTDOOR USE ONLY.
NOTICE TO INSTALLER: These
instructions must be left with the owner
and the owner should keep them for
future use. FOR YOUR SAFETY
If you smell gas:
1. Shut off gas to the appliance.
2. Extinguish any open flame.
3. Open lid.
4. If odor continues, immediately call
your gas supplier or your fire
department.
WARNING: Follow all leak check
procedures carefully in this manual prior
to barbecue operation. Do this even
though the barbecue is assembled.
FOR YOUR SAFETY
1. Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
2. An LP tank not connected for use shall
not be stored in the vicinity of this or any
other appliance.
3400 Series
LP Gas Barbecue
Step-By-Step Instructions
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63601 6/96

3
Step 2
Remove packaged parts
Remove and unpackage glass door assemblies,
warming rack, Weber Warm-Up Basket, 2 cooking
grates, corrugated box (which contains cookbook and
warranty card), 8 short stainless steel Flavorizer Bars
and 5 long stainless steel Flavorizer Bars. Figure 2.
Note - Be sure no packaging material is left in the
cooking box before reinstalling parts.
Step 1
Removal of all tape
Remove tape from the following locations:
front and rear of side work tables
swing tables
swing table slide bars
bottom tray beneath the cooking box
bottom accessory trays
Assembly
Supplies needed
You will need a soap and water solution to check for gas
leaks. (See Step "Check for gas leaks.")
Refer to exploded view if replacement parts are needed.
Your LP tank is shipped empty for safety. After setting
the LP fuel scale you will need to fill it. (See Step "Fill
LP tank.")
While we give much attention to our products, unfor-
tunately an occasional error may occur. If a part is
missing, do not go back to the store. Call the Weber
Customer Service Center toll free 1-800-446-1071 to
receive immediate assistance. Have your owner’s
manual and serial number of the barbecue available
for reference.
Figure 1
Figure 2
Warming basket
Weber Warm-Up
Basket
Cooking grates
Short Stainless
Steel Flavorizer
Bars
Long Stainless
Steel Flavorizer
Bars
Remove packaging material from the side burner.
Figure 3.
protective plastic
on the stainless
steel lid
protective paper
cap on the burner
Figure 3
Corrugated box
containing glass
doors

4
Step 3
Reinstallation of Stainless Steel Flavorizer
Bars, Cooking Grates and Warming Rack
Set the long stainless steel Flavorizer bars side to side
in the lower position of the cooking box, then set the
short stainless steel Flavorizer bars, front to back in the
upper position. Figure 4.
Set the cooking grates onto the ledges in the cooking
box. The open "U" of the cooking grate goes down.
Figure 5.
Set the warming rack into the slots at the rear of the
cooking box. Figure 6.
Figure 4
Figure 5
Figure 6
Step 4
Installation of catch pan holder into bottom tray
Pull out bottom tray from cooking box.
Remove packaging material from bottom tray, catch pan
holder, catch pan, and drip pan.
Hook the ends of the catch pan holder into the hole in
the bottom tray. Figure 8. The front of the catch pan
holder must be on the same side as the finger grip
of the bottom tray.
Slide the bottom tray onto the mounting rails under the
cooking box with finger grip toward you.
CAUTION: Do not line bottom tray with aluminum
foil. It can cause grease fires by trapping the grease
and not allowing grease to flow into the catch pan.
Put the foil drip pan into the catch pan.
Slide the catch pan into the catch pan holder with its
finger grip towards you.
Bottom tray
Finger grip
Figure 7
Figure 8
Front of
catch pan
holder

5
Step 5
Removal of LP Tank
Note - You must remove tank and it's packaging before
lifting grill out of lower carton.
1) Loosen tank lock wing nut and turn tank lock up out
of the way. Tighten wing nut. Figure 9 (a).
2) Lift tank straight up. The cardboard sleeve will come
with it, then remove the sleeve from the tank.
F
E
Step 6
Remove grill from lower packaging
WARNING: Lifting the barbecue from the lower
packaging requires at least two people.
With two people lift straight up and over lower
packaging and cardboard support.
Figure 9
Figure 10
(a)
Tank lock wing nut

6
Step 7
Install Lid
Remove hinge pins and hair pin cotters from back of
cooking box.
Set the lid in place. Align the hinges at the rear of the
barbecue. Insert hinge pins from the outside. Insert hair
pin cotters into the small holes in the hinge pins.
Figure 11.
Remove tape securing the thermometer into its holder.
Hair pin cotter
Hinge pin
Step 8
Install Weber Warm-Up Basket
Insert one end of the Weber Warm-Up Basket into the
hole in the right end of the lid and the other end into the
slot in the left end of the lid. Figure 12.
Figure 11
Figure 12
Step 9
Set LP fuel scale
You will need: LP tank (empty).
Note - For accuracy, the fuel scale must be set with an
empty tank.
We utilize various LP tank manufacturers. Some of the
tanks we receive have differing top collar assemblies.
(The top collar is the metal protective ring around the
valve.) One series of tanks mounts with the valve facing
front. The other tanks mount with the valve facing away
from the fuel scale. These types of tanks are illustrated
in Figure 13.
Loosen the tank lock wing nut. Tighten so the lock is
held up out of the way. Figure 13 (a). Lift and hook the
tank onto the fuel scale. With an empty LP tank, adjust
the fuel scale setting to E with scale setting (top) wing
nut. Figure 13 (b).
CAUTION: Do not remove adjustment wing nut
from tank scale.
After adjusting tank scale, push tank down a couple of
times to check that the tank scale is set on “E”.
F
E
F
E
(a)
Scale setting
wing nut
Figure 13
F
E
(b)

7
Step 10
Fill LP tank
Note - The LP tank manufacturer is responsible for the
materials, workmanship and performance of the tank. If
the tank has a defect, malfunctions, or you have a
question regarding the tank, call the tank manufacturer's
customer service center. The phone number is on the
warning decal which is permanently attached to the
tank. If the tank manufacturer has not resolved the issue
to your satisfaction, then call Weber-Stephen Products
Co., Customer Service Center.
To fill, take the LP tank to an RV center or look-up gas-
propane in the phone book for other sources of LP gas.
WARNING: We recommend that your LP tank be
filled at an authorized LP gas dealer by a qualified
attendant, who fills the tank by weight.
IMPROPER FILLING IS DANGEROUS.
Tell your LP dealer that this is a new LP tank. The air
must be removed from a new LP tank before the initial
filling. Your LP tank dealer is equipped to do this.
CAUTION: If you exchange your LP tank, make
sure you get a similar tank in return. Your LP tank is
equipped with a quick-disconnect valve. Other LP
tanks are not compatible with your barbecue
connection.
The LP tank must be installed, transported and stored in
an upright position. LP tank should not be dropped or
handled roughly.
Never store or transport the LP tank where
temperatures can reach 125° Fahrenheit (too hot to hold
by hand – for example: do not leave the LP tank in a car
on a hot day).
For full instructions on safe handling of LP tanks, see
Section "Safe handling tips for LP gas,” in the Operating
Guide.
Step 11
Remove control panel
Pull the right hand swing table up. Stand to the right
side of the barbecue. Slightly pull back both side
burner locks. Slide the side burner out from the control
panel. Figure 14. Do not disconnect the hose.
Figure 14
View from top
Side view

8
Step 12
Check that items are secured
Note - Although the following items were factory
assembled, check that they have not loosened during
shipping and handling.
Remove the tape from the manifold bracket.
Check that the bracket is securely hooked onto the
frame brace and under the manifold at the center burner
valve. Figure 16.
If it is loose lift the bracket, manifold and cooking box
slightly as a unit and reposition onto the frame brace.
Check that the igniter is secure in the frame brace and
has not shifted out of the key hole. Figure 17.
If it is loose, slide the igniter into the rear of the key hole.
Carefully tighten the igniter lock nut with an adjustable
wrench or pliers.
Figure 16
Figure 17
Manifold Bracket
Manifold Bracket
Igniter lock nut
Keyhole in
frame brace
Small part of keyhole
in frame brace
Frame brace
Frame brace
(a)
(b)
(c)
Figure 15
(a)
(b)
control panel push-in
buttons
Remove the burner control knobs. Figure 15 (a). While
standing at the right end of the barbecue, grasp the
under the edge of the control panel at the control panel
push-in buttons and slide along the frame toward you.
Figure 15 (b). Lift off the control panel.

9
Remove the tape from the hose and regulator.
Route the hose so it will not interfere with the scale
indicator rod.
The hose and regulator are connected in the
following manner:
Slide back the collar of the quick disconnect on the tank
valve. Push the male fitting of the regulator into the quick
disconnect, and maintain pressure. Slide the collar
closed. Figure 21 (a). Figure 21 (b) shows the quick
disconnect engaged and various components of the tank
and regulator. Regulator vent hole should be at 3, 6, or 9
o'clock. It should not be pointed up. Figure 21 (c).
Step 13
Connect filled LP tank
WARNING: Make sure that the LP tank valve is
closed. Close by turning clockwise.
Hook the LP tank onto the fuel scale. Loosen the tank
lock wing nut. Swing the tank lock down. Tighten the
wing nut. Figure 20.
F
E
Figure 20
Figure 21
Tank lock wing
nut
Check that the tank panel tabs are in their slots in the
frame brace. Figure 18.
Check that all the burner valves are off.
Valves are shipped in the OFF position, but you should
check to be sure. Put the knob on each valve. Check by
pushing down and turning clockwise. If they do not turn,
they are off. Proceed to the next step. Figure 19.
Figure 18
Figure 19
Tank panel tabs
Turn so regulator vent
does not collect water
Hose
Quick disconnect
engaged
Valve handwheel
close clockwise
Tank valve
Collar
Male
fitting
Pressure
relief valve
Tank
Regulator
Regulator
vent
(a)
(b)
(c)

10
Step 14
Check for gas leaks
WARNING: You should check for gas leaks every
time you disconnect and reconnect a gas fitting.
Note - All factory made connections have been
thoroughly checked for gas leaks. The burners have
been flame tested. As a safety precaution you should
recheck all fittings for leaks before using your Weber
Genesis Gas Barbecue. Shipping and handling may
have loosened or damaged a gas fitting.
WARNING: Perform these leak checks even
though the barbecue was assembled.
You will need: a soap and water solution and a rag or
brush to apply it.
Note - Since some leaks test solutions, including soap
and water, may be slightly corrosive, all connections
should be rinsed with water after checking for leaks.
Make sure side burner is OFF. Remove valve control
knob and screws. Remove porcelain top. Figure 22.
To perform leak checks: open tank valve by turning the
tank valve handwheel counterclockwise. Figure 23.
Figure 22
 DANGER 
Do not use an open flame to check for
gas leaks. Be sure there are no sparks or
open flames in the area while you check
for leaks. This will result in a fire or
explosion which can cause serious bodily
injury or death and damage to property.
WARNING: Do not ignite burners while leak
checking.
Check for leaks by wetting the connections with the
soap and water solution and watching for bubbles. If
bubbles form or if a bubble grows there is a leak.
Check:
a) Hose to manifold connection. Figure 24 (a).
b) Regulator to tank connection. Figure 24 (b).
c) Manifold to side burner hose connection.
Figure 24 (c).
WARNING: If there is a leak at connections a, b or
c, retighten the fitting with a wrench and recheck for
leaks with soap and water solution.
If a leak persists after retightening the fitting, turn
OFF the gas. DO NOT OPERATE THE BARBECUE.
Contact Weber-Stephen Customer Service.
d) Side burner hose to side burner connection.
Figure 24 (d).
e) Valves to manifold connections. Figure 24 (e).
f) Hose to regulator connection. Figure 24 (f).
WARNING: If there is a leak at connections d, e or
f, turn OFF the gas. DO NOT OPERATE THE
BARBECUE. Contact Weber-Stephen Customer
Service.
When leak checks are complete, turn gas supply OFF at
the source and rinse connections with water.
F
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F
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Figure 23
Figure 24
(a) (b)
(c)
(d)
(f) (e)