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Intake Doors

There are several types of intake doors to consider; bottom or side hinged (hydraulic or pneumatic) with or without interlock. The standard 15” X 18” bottom hinged, hopper style door is recommended for most chute designs. When opened, the bottom-hinged door allows for easy disposal of waste into the chute, while eliminating unnecessary spillage and overflow of litter on to the floor.


Where specified, sensor activated (WAVE) or push-button operated handicap accessible (pneumatic bottom hinged), hopper style doors; for typical trash chutes are available. This option provides easy disposal of waste into the chute eliminating the need to touch the door to open the door for disposal requirements.

The Electric Interlock feature allows for safe operation of the chute system by locking out all remaining intake doors when one door is in operation, protecting persons using the trash disposal system from falling debris from intakes above.


The side hinged door, typically recommended for linen chutes, provides a greater accessible area to deposit bundles of soiled linen.

Standard bottom hinged doors are self-closing, noiseless and fully self-latching. Both type doors are UL classified, a chute frame and door assembly with a 1½ hour fire rating and a temperature rise of 250° F (max) in thirty minutes.


Electric Interlock doors are designed to lock out all other intake doors on a chute when one door is opened. When chute is in use, all other chute doors will remain locked with a light showing another door is in use. Maintenance personnel, by means of a key switch at the power supply control box, have the ability to lock out the intake doors

when servicing the equipment. This will close all doors when the discharge container is

out of position or while maintenance is being performed in the discharge area.

Electrical Interlock system comes standard with service switch which will disable the interlock feature.

The interlock system is pre-wired and is designed to be plugged into a 120V receptacle and stepped down to 24VDC located in the power supply box. (120V receptacle supplied by others).


Pneumatic standard and interlock intake doors are designed for ease of operation. Pneumatic doors are controlled by a green push button, which will automatically open the intake door for 7-10 seconds to allow for the disposal of trash into the chute system.


The optional pneumatic interlock feature will function similar to the electric interlock. When the chute is in use; all other chute doors will remain locked and a red indicator light on the top panel will signify chute in use. This will allow for the safe operation of the chute system by protecting persons from falling debris from above.


Pneumatic doors are powered by an air compressor, regulator and dump valve, located in the discharge area. The pneumatic doors can be locked out for routine maintenance by manually turning off the dump valve to release all air from the system. The Pneumatic system is pre-wired with 1/8” supply hoses and is designed to be plugged into an oil-free air compressor (120V receptacle source for air compressor supplied by others). The regulator is recommended to be set between 90-100PSI for continuous operation.


The heat sensor option can be installed on both electric and pneumatic interlock systems. This safety feature will shut the chute system down in the event of a fire emergency. The heat sensor on the electrical interlock will shut down the power source at the control box, which will prohibit intake doors from being opened.

The heat sensor on the pneumatic interlock will automatically dump all air from the chute system disabling chute intake door operation.

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