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L-1: Left Hand Door Interlock: (A) Standard Heavy Duty |
Single Contact Interlock
This is a single contact electrical and mechanical interlock used with a stationary cam. The interlock mounts on the door jamb or frame inside the hoistway. The locking latch mounts to the inside door edge. When the door is closed the contact is made and the solid brass hook catches behind the locking bar, mechanically locking the door.
When the car stops at a floor the cam pushes the release roller, mechanically unlocking the door and opening the electrical contact.
These are made for either right-hand or left-hand mounting interlocks. The hand is determined by standing inside the elevator looking out. The side on which the lock is to be mounted (left or right) is the hand to be ordered.
Features:
• All Solid Cast Parts • Heavy Duty Contact • 250 Volts AC or DC • Self Wiping Contact • Adjustable Roller Arm

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L-1: Right Hand Door Interlock: (B) Standard Heavy Duty |
(right hand model pictured)

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LR: Left Hand Door Interlock: (A) Standard Heavy Duty |
Double Contact Interlock (right hand model shown)
This interlock has two contacts, wired in series together as part of the safety circuit. The upper is the door contact, the lower is the locking contact which is both electrical and mechanical. The interlock mounts on the door jamb or frame inside the hoistway. The locking latch mounts to the inside door edge. When the door is closed the upper (door) contact is made. When the retiring cam is retracted the bottom contact is made and the solid brass hook catches behind the locking bar, mechanically locking the door.
When the car stops at a floor the retiring cam pushes the release roller, mechanically unlocking the door and opening the bottom electrical contact. When the door is opened the top contact drops by gravity.
Although this is designed for use with a retiring cam it can be used with a stationary cam.
Emergency release of the interlock is made with a CJA lunar key. (page 32)
These are made for either right-hand or left-hand mounting interlocks. The hand is determined by standing inside the elevator looking out. The side on which the lock is to be mounted (left or right) is the hand to be ordered.
Features
• All Solid Cast Parts • Heavy Duty Contacts • 250 Volts AC or DC • Self Wiping Contacts • Adjustable Roller Arm

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LR: Left Hand Door Interlock: (C) Sealed Contacts: C1,D2 |
If you have moisture, dust or explosion proof requirements this is the interlock you need. Same switch housing and cover plate but the electrical contacts are hermetically sealed to provide trouble free electrical operation.

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LR: Right Hand Door Interlock: (B) Standard Heavy Duty |

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LR: Right Hand Door Interlock: (D) Sealed Contacts: C1,D2 |
If you have moisture, dust or explosion proof requirements this is the interlock you need. Same switch housing and cover plate but the electrical contacts are hermetically sealed to provide trouble free electrical operation.

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