EN
| 10
Bosch Security Systems | January 03, 2005
LTC 7950, 7960 Series |
Instruction Manual
|
Closing the Housing
6.0
CLOSING THE HOUSING
6.1
Supplies
6.2
Reinserting the Camera Cradle
1.
Inspect the O-ring at the end of the housing
for nicks and debris, and replace if necessary
(see
Figure 8
)
.
2.
If replacing the O-ring, clean the O-ring groove.
3.
Apply silicone grease to the O-ring. Use only
the specified silicon grease.
4.
Install the new O-ring if necessary.
5.
Install two (2) fresh desiccant bags in the
camera cradle (see
Figure 2
)
.
6.
To reinsert the camera cradle, ensure that the
edges of the end cap are clean and free of
scratches.
7.
Slide the camera mounting cradle forward into
the housing. Use the mating connector as
described in
Section 5.2
(see
Figure 8
).
8.
For accurate positioning, align the index mark
on the rear of the end cap with the desired
alignment mark on the housing. There are two
alignment marks spaced at 90
°
intervals on the
housing (see
Figure 9
)
.
Figure 9: Aligning the Camera Cradle With the Housing
9.
Remove the front Vent Screw (see
Figure 10
)
.
10.
Replace the retaining ring on the rear of the
housing (see
Figure 6
).
11.
Reinsert and tighten the rear Vent Screw
(see
Figure 9
)
.
7.0
PRESSURIZING
CAUTION: This unit must be properly
pressurized after it has been opened for
camera servicing. Carefully follow the
pressurizing procedure.
7.1
Supplies
•
Dry Nitrogen Supply with Regulator and
Gauge
7.2
Pressurize Housing
CAUTION: Make sure that the Front Vent
Screw has been removed (see
Figure 10
)
.
Figure 10: Vent Screw
1.
Remove the fill valve cap and attach the dry
nitrogen line to the fill valve (see
Figure 11
).
Figure 11: Pressure Fittings
2.
Set the regulator to a maximum pressure of
140 kPa (20 PSIG).
WARNING: The pressure in the housing
must never exceed 140 kPa (20 PSIG).
Alignment Marks
on the Housing
Index Mark on
Rear End Cap
Rear
Vent Screw
Front Vent Screw
Dry Nitrogen Line
Front Retaining Ring
Press to Reduce
Pressure
No.
Description
Part No.
1
Novagard G661 Silicone Compound 03-G661-01G
1
O-ring
315 1557 903
2
Desiccant Bags
315 1597 001
