PGC5007
PGC5007 Operating Instructions 5 Furnace repair
25 OI/PGC5007-EN, Rev C
12. Remove the furnace housing cover.
5.2 Removing the furnace
1. Remove the four screws and lockwashers holding the internal heat shield in place and retain them for later use.
2. Remove the heat shield from the furnace housing.
3. Locate the connections to the furnace (see Figure 5.4).
LEFT
CARRIER LINE
RIGHT
CARRIER LINE
HEATER
WIRE
HEATER
WIRE
THERMOCOUPLE
INTERNAL HEAT
SHIELD (FURNACE IS
UNDERNEATH
)
THERMOCOUPLE
WIRE
THERMOCOUPLE
WIRE
Fig. 5.4. Furnace Housing with Cover Removed
4. Remove the left-side carrier line as follows (see Figure 5.5):
a. Use the ABB Tee Wrench to hold the elbow.
b. Using a 9/16-inch wrench, disconnect the line just outside the furnace on the quartz tube.
c. Using a 1/4-inch wrench, disconnect the line at the top left.
d. Using a 5/16-inch wrench, loosen the line just above the elbow.
e. Remove this piece and retain it for re-installation.
Use Tee
Wrench Here
Use 5/16 in.
Wrench Here
Use 1/4 in.
Wrench Here
Remove this piece
Use 9/16 in.
Wrench Here
Fig. 5.5. Left-Side Carrier Connections
5. If this is the vapor version of the PGC5007, the right-side carrier line is a mirror image of the left-side carrier line. Remove
the right-side carrier line as follows:
a. Use the ABB Tee Wrench to hold the elbow.
b. Using a 9/16-inch wrench, disconnect the line just outside the furnace on the quartz tube.
c. Using a 1/4-inch wrench, disconnect the line at the top left.
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