Global 8550-RU, Руководство по эксплуатации, Страница: 30 / 61

Global Power Technologies SERVICE AND MAINTENANCE
302954 rev0 | Model 8550-RU Page 26 of 53
Follow the step-by-step guide outlined in the table below.
Heat Pipe Detailed Inspection
> means greater than; < means less than
Step 1
Take temperatures at points A and B T
A
T
C
T
D
T
B
Subtract T
B
from T
A
.
If T
A
– T
B
> 20°C (36°F), proceed to step 2.
If T
A
– T
B
< 20°C (36°F), the heat pipe is good. No further
inspection required
T
A
- T
B
=
Step 2
Only if required as per Step 1.
Take temperatures at point C
and D. Use step 1 temperature of point A .
T
A
T
C
T
D
T
B
Subtract T
C
from T
A
.
Subtract T
D
from T
C
.
If T
A
– T
C
> 20°C (36°F) or T
C
– T
D
> 15°C (27°F), replace heat
pipe.
If T
A
– T
C
< 20°C (36°F) and T
C
– T
D
< 15°C (27°F), the heat
pipe does not need immediate replacement, but should be
monitored during annual inspections for further
degradation.
T
A
- T
C
=
T
C
- T
D
=
A problem should be suspected with any heat pipe that is operating at a temperature much lower
than the rest of the heat pipes. Replacement of heat pipes should only be done by a factory trained
technician, consult GPT for heat pipes replacement.
Remove and replace any heat pipe that is visually damaged.
CAUTION!
Do not operate the TEG if it has a damaged heat pipe.
5.4 FUEL SYSTEM
WARNING!
Turn off the fuel supply at the external valve before performing service checks on
the fuel system.
The basic components of the fuel system are shown in Figure 13, note that some details may be
different depending on the fuel system option on your TEG. Identify the components and their
location on the TEG.

Pressure regulator – regulates fuel pressure to the fuel orifice. A sediment bowl and drain
cock are located on the bottom of the pressure regulator.

Manifold and pressure gauge – monitors the fuel pressure to the fuel orifice.

Automatic shut-off valve, sometimes referred to as safety shut-off valve