TSI FHC50 Vertical Sash Sensor

Product Usage Instructions

• Attach the Cable Clamp Hook and Cable Clamp Wheel to the Vertical Sash Sensor using the Philips Shoulder Screw.
• Insert the Thumb Screw into the top of the Cable Clamp Hook but do not tighten all the way for easy adjustment.
• Close the fume hood sash completely.
• Locate a straight run of sash counter-weight cable on top of the fume hood.
• Mark the sash counter-weight cable to identify the mounting location.
• Open the sash 100% and verify the marked location.
• Install the Vertical Sash Sensor so that the Sash Sensor Cable extends as the sash is closing and retracts as the sash is opening for fail-safe operation.

Included Parts

 

Description	Qty
Vertical Sash Sensor w/12 ft Electrical Cable 800925:       50” Sash Sensor Cable, 10 k-Ω 800953:       120” Sash Sensor Cable, 5 k-Ω	1
Cable Clamp Hook	1
Cable Clamp Wheel	1
Shoulder Screw (8-32 x 3/16”)	1
Thumb Screw (10-32 x 1/2”)	1
Installation Instructions	1

Installation

Vertical Sash Sensor Installation

WARNING

• For implementations with multiple sashes and multiple Vertical Sash Sensors, installation and wiring must be completed as described in these instructions.
• Failure to mount, install, and wire the Vertical Sash Sensors correctly can result in poor fume hood control functionality and loss of containment.
• For fail safe operation, install the Vertical Sash Sensor so that the Sash Sensor Cable extends as the sash is closing and retracts as the sash is opening, as detailed later in this document.
• This ensures that if a Sash Sensor Cable breaks or becomes disconnected, the Vertical Sash Sensor will respond as if the sash is open.

The Vertical Sash Sensor is designed to be mounted to the fume hood sash counter-weight cable system. The P/N 800925 Vertical Sash Sensor Cable has a travel of approximately 50 in (1.3 m) and the P/N 800953 Vertical Sash Sensor Cable has a travel of approximately 120 in (3.0 m). DO NOT exceed the maximum sash travel, or the Vertical Sash Sensor will be damaged.

Prepare the Vertical Sash Sensor—Attach Cable Clamp Parts

1. Attach the Cable Clamp Hook and Cable Clamp Wheel to the Vertical Sash Sensor using the Philips Shoulder Screw (Figure 1). Slide the Shoulder Screw through the eyelet on the end of the Sash Sensor string, through the Cable Clamp Hook, and fully tighten to the Cable Clamp Wheel.
2. Insert the Thumb Screw into the top of the Cable Clamp Hook, but DO NOT tighten all the way
   (Figure 1). Leaving the Thumb Screw in this position will allow for easy adjustment of the Cable Clamp Wheel when attaching to the sash counter-weight cable.

Selecting the Vertical Sash Sensor Mounting Location
The Vertical Sash Sensor is typically mounted on top of the fume hood where there is access to the sash counter-weight cables, which connect the sash window to the counter-weight (Figure 2, option A or B). Alternatively, the Vertical Sash Sensor may be connected to the sash window (Figure 2, option C).

1. Close the fume hood sash completely.
2. Locate a straight run of sash counter-weight cable on top of the fume hood, which has a distance between pulleys that is greater than the sash window travel from fully closed to fully open 100%.
3. Mark the sash counter-weight cable with a piece of tape or marker (Figure 3).
4. Open the sash 100%, and verify that the tape or mark travels along a straight line without passing through a pulley or other obstruction (Figure 4). If the fume hood has a sash window stopper, make sure to release the stopper so the sash can be opened 100%. If the travel on this run of sash counter-weight cable is acceptable, the Cable Clamp will be secured to this taped or marked location.

Vertical Sash Sensor Mounting
For fail-safe operation, install the Vertical Sash Sensor so that the Sash Sensor Cable extends as the sash is closing and retracts as the sash is opening (Figure 5). This ensures that if a Sash Sensor Cable breaks or becomes disconnected, the Vertical Sash Sensor will respond as if the sash is open.

NOTICE

Multiple Vertical Sash Sensors may be mounted to the same fume hood, each connected to a different vertical sash window and counter-weight cable. Each Vertical Sash Sensor must be installed so that the Sash Cable extends as its sash is closing and retracts as its sash is opening. Failure to install correctly can result in poor fume hood control functionality and loss of containment.

1. Mount the Vertical Sash Sensor to the fume hood frame using two screws (not provided). (Figure 6).
2.  Note that the mounting L-bracket attached to the Vertical Sash Sensor can be rotated on its body for maximum mounting flexibility. Remove the three screws on the side of the Vertical Sash Sensor, rotate the mounting L-bracket to the desired position, and re-apply screws.
3. The Vertical Sash Sensor must be mounted so that the Sensor Cable extends at little or no angle from the body of the Vertical Sash Sensor, and so there is no interference with any moving parts or objects.
4. Attach the Vertical Sash Sensor Cable Clamp to the sash counter-weight cable in the previously taped or marked location. Route the sash counter-weight cable through the Cable Clamp Hook, and fully tighten the Thumb Screw to secure the sash counter-weight cable to the Cable Clamp (Figure 7).

Vertical Sash Sensor Wiring

WARNING

For implementations with multiple sashes and multiple Vertical Sash Sensors, installation and wiring must be completed as described in these instructions. Failure to mount, install, and wire the Vertical Sash Sensors correctly can result in poor fume hood control functionality and loss of containment.

• After mounting the Vertical Sash Sensor and attaching the Cable Clamp to the sash counter-weight cable, it must be wired to the FHC50 Fume Hood Controller.
• The FHC50 Fume Hood Controller is designed to accommodate fume hoods with up to three vertically-moving sashes, with each sash connected to a Vertical Sash Sensor.
• Route the Vertical Sash Sensor Electrical Cable to the FHC50 Fume Hood Controller location and make connections as described below.

NOTICE

When wiring multiple Vertical Sash Sensors together, the electrical wiring must be connected in series as described in the following section. Connect the wires in series using a wire nut or other preferred method. Wire the Vertical Sash Sensor to the FHC50 Fume Hood Controller as shown (Figures 8 and 9).

TSI and the TSI logo are registered trademarks of TSI Incorporated in the United States and may be protected under other countries’ trademark registrations.

CONTACT

TSI Incorporated – Visit our website www.tsi.com for more information.

• USA Tel: +1 800 874 2811
• UK Tel: +44 149 4 459200
• France Tel: +33 1 41 19 21 99
• Germany Tel: +49 241 523030
• India Tel: +91 80 67877200
• China Tel: +86 10 8219 7688
• Singapore Tel: +65 6595 6388 for more information.

FAQ

• Q: What should I do if the Vertical Sash Sensor cable breaks?
• A: If the Sash Sensor Cable breaks, ensure to replace it with the appropriate replacement cable provided in the kit. Follow the installation instructions to properly attach and adjust the new cable to maintain correct operation.

Documents / Resources

TSI FHC50 Vertical Sash Sensor [pdf] Instruction Manual FHC50, 800925, FHC50 Vertical Sash Sensor, FHC50, Vertical Sash Sensor, Sash Sensor, Sensor

References

• User Manual