Electrostatic Precipitator Access Door Locks
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The most common device requiring a lock is the door. This is also true for the doors installed on
electrostatic precipitators. Access door locks are therefore the most common locks in a precipitator
key interlock system. Access door locks are also the locks that will prevent or allow access to the
areas of the precipitator containing high voltage components. Access door locks are generally designed
to retain their associated keys when unlocked and release the associated keys when locked.
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Access door keys common to each isolatable gas path are generally keyed alike. For example, all the keys for
Chamber "A" of a two-chambered precipitator would be identical. Chamber "A" keys would not work in Chamber
"B" however because each chamber can be separately isolated and accessed.
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Access door locks come in many different shapes and styles. However, the most common access door
interlock utilizes a bolt eye and chain to secure the door. This allows some flexibility for door
misalignment, but maintains interlock system integrity. Generally, the lock is fixed permanently
to the doorframe and the bolt eye is attached to one end of a chain; the opposite end of the chain
is affixed, normally via welding, to the door.
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A deadbolt type lock may also be used for access doors. This type of lock, however, requires the accurate
alignment of doors, which in an industrial environment is sometimes difficult to attain. This type of lock
is especially useful in areas where no movement of the door is permitted until the interlock system is satisfied.
| Hamon Research-Cottrell parts |
800 722-7580 |
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