Global 8550-RU, Руководство по эксплуатации

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Global Power Technologies SERVICE AND MAINTENANCE
302954 rev0 | Model 8550-RU Page 28 of 53
5.4.2 CHANGING THE FUEL FILTER
To change the fuel filter:
1. Remove the 4 socket cap screws that hold the
bottom bowl on the pressure regulator.
2. Remove the bottom bowl and replace the filter
element.
3. Check and replace the gasket if needed.
4. Carefully reassemble the regulator ensuring
that the needle valve spring is properly placed
over the needle valve centering cup in the
regulator body.
5. Check for proper operation.
6. Check all joints for fuel leaks.
5.4.3 CHANGING THE FUEL ORIFICE
To change the fuel orifice:
1. Remove the fuel line and orifice assembly by turning the orifice mounting base.
2. Remove the orifice body from the assembly, see Figure 14.
3. Check the orifice hole. It should be free and clean of debris.
4. Replace the orifice body if needed.
5. Reassemble and check for leaks.
WARNING!
Check for leaks after performing any fuel system service.
5.5 BURNER SYSTEM
The Burner System should be disassembled only if a problem with burner operation is suspected.
The Burner System consists of the following components:

The burner venturi and air shutter assembly which mixes combustion air and fuel.

The burner plate assembly where combustion takes place.

The exhaust stack assembly which collects and exhausts the exhaust gases.
Before disassembling the Burner System, remove the fuel orifice as per Section 5.4 and allow the
burner to cool. Once the burner has cooled down, identify and locate the components from Figure 15
proceed with disassembly as follows:
1. Remove the venturi and air shutter assembly from the burner plate by turning the venturi, which
is threaded into the burner plate assembly, counterclockwise .
2. Remove the air shutter from the venturi by closing the air shutter completely and removing the
four screws located in the openings on the air shutter plate.
Figure 14 – Orifice Assembly Removal