Alliance Laundry Systems 70269701R4 User Manual

Page of 66
Installation
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70269701
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How to Change Injector (Orifice) Size
1. Disconnect electrical power from tumbler. Close 
gas shut-off valve to tumbler. Refer to Figure 6.
2. For Johnson GM7000 gas valve:
Remove burner orifice(s) from the spud holder. 
Refer to Figure 7.
3. Install the new, correct injector(s) (orifices). 
Refer to Figure 8. Torque each to 9 – 10 Nm.
4. Commission tumbler for use.
NOTE: Blank injectors (orifices) are available as 
Part No. M400995.
How to Adjust Gas Valve Governor/Regulator
1. Check gas injector (manifold) pressure as 
follows. Refer to Figure 7.
2. Loosen screw plug inside pressure tap located on 
underside of valve.
3. Connect a “U”-tube manometer (or similar 
pressure gauge) to the tap.
4. Start tumbler and note pressure once flame is 
burning. Remove regulator cap and adjust 
regulator screw until the injector pressure per 
applicable table is achieved. Replace regulator 
cap and close needle valve (pressure tap).
5. Commission tumbler for use.
Figure 8 
TMB2015N
1
Size Stamped on Orifice
1
BURNER INJECTOR
(ORIFICE)