Instruction Manual
D102005X012
846 Transducer
June 2017
34
Removing the Module Final Assembly
The module final assembly is attached to the module cover. Removing the module cover automatically removes the
module final assembly from the housing. When the module cover is unscrewed, the electrical feedthroughs and span
and zero adjustments automatically disengage. The internal air ports are also disengaged. The air supply to the
transducer should be turned off to prevent uncontrolled air loss through the housing.
WARNING
Personal injury or property damage could result from an uncontrolled process. Perform the steps in the WARNING at the
beginning of the Maintenance section before removing the module cover to ensure the process is properly controlled.
Unscrewing the module cover removes power from the electronics and opens the supply and output air passages to
atmosphere resulting in an output signal of 0.0 psi.
WARNING
Personal injury or property damage could result from fire or an explosion. In explosive atmospheres, remove power and
shut off the air supply to the transducer before attempting to remove the terminal compartment cover or module cover.
Failure to do so could result in an electrical spark or explosion.
Use the following steps to remove the module final assembly from the housing and module cover:
1. Shut off the air supply. If applicable, remove the cover lock and screw to allow access to the terminal compartment
cover. Unscrew the module cover. When the module cover threads clear the housing, slowly pull on the cover, and
the module final assembly will gradually come out of the housing.
Note
The module and the housing are designed for minimal clearance; therefore, patience may be required while pulling on the cover.
Time must be allowed for release of the vacuum effect between the housing and module. If the module becomes tilted and cannot
be removed, reinsert it completely into the housing and fully engage the module cover threads. Then proceed again with removal,
ensuring that you pull slowly in a straight line.
Support both the module cover and the module final assembly as it comes out of the housing. This is to prevent
dropping them, should they become detached accidentally.
WARNING
Do not grip the module cover threads. The threads are sharp and may cause minor injury. Wear gloves when removing the
module cover.
2. Prepare to remove the module final assembly from the module cover. Align the module feet with the two interior
cover slots. To accomplish this, identify the indicating boss on the module cover, shown in figure 16.
Grasp the module cover with one hand and the module final assembly with the other hand. Rotate the module final
assembly so that the module alignment key is directly above the indicating boss on the module cover. Figure 16 shows
the module alignment key and the indicating boss. The module feet are now aligned with the cover slots.
To Next Page
Loading...
