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Additional Options for the ASPS-SS and the ASPS-WI:

Option #1 - Hood Light Control:

When a laboratory technician is sensed in front of the fume hood, the light in the fume hood will automatically turn on. Once NO object is sensed in front of the fume hood, the control module will delay (adjustable - programmable) and then turn the fume hood light off.

Option #2 - Manual Open Mode / Automatic Close:

This version of the ASPS-SS Sash Operator System does not have an Opening Feature. With the user in front of the fume hood, the user will be able to manually open and close the sash without releasing any type of sash locks. If the sash is left open, and the user is not sensed in front of the fume hood, the control module will delay 60 seconds (adjustable), then slowly close the sash. If an object is sensed in the path of the sash, the control module will immediately stop the sash and turns on a sash interference light. To re-open the sash, after the object has been cleared, the user has to be sensed in front of the hood and activate the “Push to Reset” button, which will reopen the sash. Once NO object is sensed in front of the fume hood, the control module will delay, and then slowly close the sash.

Option #2A - Manual Open Mode / Automatic Close with Audible Alarm:

Same as (Option #2) with the addition of an audible alarm. This audible alarm will sound when there is an object in the sash path causing the sash to stop.

Option #3 - After Hours Close:

During normal working hours, the hoods function as a normal hood (manual open – manual close, if lab user left the sash open it stays open). After a preset end of workday time setting (5 pm), the ASPS is activated for one closing cycle. At that time, if no lab user is sensed in front of the fume hood, the control module will delay 60 seconds (adjustable), then slowly close the sash. If an object is sensed in the path of the sash, the control module will immediately stop the sash and turns on a sash interference light. To re-open the sash after the object has been cleared, the user has to be sensed in front of the fume hood and activate the “Push to Reset” button, which will reopen the sash. Once NO object is sensed in front of the fume hood, the control module will delay, and then slowly close the sash.

Option #3A – After Hours Close with an Audible Alarm:

Same as the standard After Hours ASPS (Option #3) with the addition of an audible alarm. This audible alarm will sound when there is an object in the sash path causing the sash to stop.

Option# 3B – After Hours Close with Building Control Interface:

Same as either version of the After Hours ASPS (Option #3) with an Interface to the Building Controls. This option would supply a set of dry contacts that would Interface with the Building Controls to send an alarm to the main building control panel. This alarm would alert the building manager that the ASPS has sensed an object in the sash path causing the sash to stop and the fume hood needs to be checked.

Option #4 - Automatic Opening Mode: (Original Version – Prior to 2004 without Stop Sash)

Same as standard ASPS unit but without the sash interference indicator light and sash stop/hold feature. With this version of the ASPS, if an object is sensed in the path of the sash, the control module will immediately stop the sash and reopens the sash. The presence senor will then check again for the presence of a laboratory technician. If no laboratory technician is sensed in front of the hood, the control module will delay (adjustable), then slowly close the sash. If the object that was sensed in the sash path was removed, the sash will continue to close to the completely closed position. If the object that was sensed was not moved, the sash operator will continually go through the opening and closing cycles until the object is removed.

In Case of Electrical Failure:

For all models above, unless an option below is selected, upon electrical failure the sash immediately closes. The sash interference sensor is not functional and will not sense any object in the path of the sash. The ASPS unit is disabled and the sash can’t be operated manually without overriding the air pressure to the ASPS.

Electrical Failure Mode Option #1 – Static Sash:

Upon electrical failure, the sash will remain in the position it was located when the outage occurred. The user will be able to manually open or close the sash without releasing any type of sash locks.

Electrical Failure Mode Option #2 – UPS Backup:

Upon electrical failure, a UPS device will provide power to the system, and the ASPS will function normally. If an object is sensed in the path of the sash, the control module will immediately stop the sash and turns on the sash interference light.

ASPS Closing Statement:

As you can see with all of the choices above, New-Tech’s ASPS unit is capable of meeting an endless choice of configurations to meet your specific needs. If you would like to make a suggestion for an option, please feel free to do so.

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