NSGV UNICO Series User manual

NSGV SERIES “UNICO” SINGLE STATION EXHAUSTER
I, O & M MANUAL
NSGV Single Station Fume Exhauster
UNICO
TAPERED CONE
TAILPIPE ADAPTER
(i.e. 406GA or 406SS)
(i.e. CTA-4)
TAILPIPE ADAPTER
CLAMPING
BALANCER
BB-4 SPRING RETRACTING
24"
17"
22"
45 DEGREE
ELBOW
FLEXIBLE TUBE
CLAMP
PB PRESSURE BLOWER
NK-30 NEOPRENE
TAILPIPE ADAPTER
(i.e. CTA-4)
National System of Garage Ventilation
714 N. Church St. / P.O. Box 1186
Decatur, IL 62525
[phone] / [phone] / (fax)[phone]
NSGV.com [email protected]

NSGV OVERHEAD UNICO/UNICO-B SYSTEM
I, O & M MANUAL
INSTALLATION
1. Check for any damage incurred during shipment. Report any damage to the carrier immediately.
2. Determine desired mounting location, making sure the flexible tube length will be sufficient with the desired mounting height
and position. (See 9A and 9B)
3. Loosen clamp on flexible tube and remove tube from UNICO frame.
4. Securely mount the UNICO frame to a wall, column, or support structure.
5. If the UNICO has been purchased less blower, run rigid duct inside the UNICO frame to the supplied flange mounted
inside the frame. Bolt the duct to the supplied flange.
6. If the UNICO has been purchased with blower (UNICO-B), run rigid duct to the discharge of the blower and screw in
place.
7. Re-attach the previously removed flexible tube onto the swivel attachment on the UNICO frame.
8. Hang the balancer from the provided eyebolt in the UNICO frame.
9. A. If, Blast Gate/Elbow lifting mechanism is supplied:
Determination of where to cut flexible tube from the tailpipe adapter end is achieved by measuring 7’-0” above the
finished directly under the bottom of the balancer. This will be where your “loop” will ideally be located. While
holding the tube at this position, lift in the middle of the remaining flexible tube, raising this point to the balancer
snap-hook. Assuming that the tailpipe adapter is now at least 7’-0” above the finished floor, this is where you will
cut the flexible tube and insert your lifting mechanism. This is done by clamping each loose end of tube to the
blast gate/elbow.
B.If, Rubber Pull-Up Saddle lifting mechanism is supplied:
Use the same method for determining the Pull-Up saddle location but instead of cutting the tube wrap the pull-up
saddle around the flexible tube so that it is snug against tube. Hold in place with the corresponding hole in the
saddle.
10. Attach lifting mechanism to the balancer via the snap-hook.
OPERATION
1. Turn blower on.
2. Pull down flexible tube.
3. Place the adapter on the tailpipe.
4. The engine of the vehicle may now be started and serviced.
5. Once servicing is completed, turn off the engine.
6. Remove the tailpipe adapter from the tailpipe.
7. Pull on flexible tube to retract back into the stored position.
8. Turn blower off.
MAINTENANCE
1. Periodically check to insure bolts, screws, and clamps are properly tightened.
2. Periodically check to insure proper airflow through the flexible tube. If the airflow is different or lower than needed, check the
following:
A. Blockages in the flexible tubing.
B. Blast Gates are open.
C. Obstructions at the intake/discharge of the blower.
3. Periodically check the flexible tubing to insure against any tearing or holes.
4. See balancer I, O, & M manual for balancer care and adjustment.
National System of Garage Ventilation
714 N. Church St. / P.O. Box 1186
Decatur, IL 62525
[phone] / [phone] / (fax)[phone]
NSGV.com [email protected]

NSGV SERIES “BB-4” BALANCER
I, O & M MANUAL
NSGV Spring Return / Ratchet Lock Balancer
(BB-4)
National System of Garage Ventilation
714 N. Church St. / P.O. Box 1186
Decatur, IL 62525
[phone] / [phone] / (fax)[phone]
NSGV.com [email protected]

NSGV BB-4 BALANCER
I, O, & M MANUAL
RECEIVING
Check the packing slip to make sure all items ordered have been received and no damage was incurred during shipment. If there is
any damage, notify the shipping company immediately and note on the Bill Of Lading.
SAFETY INSTRUCTIONS
Please read this manual carefully and follow its instructions. Improper use or failure to follow these instructions could result in serious
injury, death, or property damage. Operators should be instructed in the safe and proper use and maintenance of this product. Keep this manual
for future reference.
INSTALLATION
Mounting:
Hang the balancer in the desired location by clevis provided at the top. The balancer should be suspended directly over the work area,
using an eyebolt or similar device with a break strength exceeding 6 times the combined weight of the balancer and the load it is supporting. The
balancer should be mounted in such a manner as to minimize cable contact with the cable guide. For proper alignment, utilize (3) three
mounting holes at the top of the balancer. If the shackle is removed to make connections, be sure the nut and cotter pin are properly replaced on
the shackle pin.
Secondary Support Chain:
A hole has been provided on the side of the housing to permit installation of a secondary support chain. All balancers mounted
overhead must have a secondary support chain to protect personnel in case of structure or mounting component failure. Attach the other end of
the secondary support chain or cable to a support component other than that which supports the balancer. Chain or cable should be as short as
possible allowing balancer to drop no more than 6 to 12 inches if the primary connection is released.
OPERATION
Flexible Hose Attachment:
WARNING: Never pull the cable to the lifting mechanism to be retracted. Always raise lifting mechanism to snap clip. If the clip is
accidentally released when it is extended, it will snap back.
The flexible tube shall be attached to the BB-4 balancer via blast gate with eyebolt, lifting elbow with eyebolt, or PS pull-up saddle.
Simply clip the provided snap clip on the end of the cable to the eyebolt or D-Clip provided on one of the above lifting mechanisms.
Spring Tension Adjustment:
WARNING:
– Attach full load including all attachments before adjusting tension.
– When releasing tension, always do so slowly, and with wrench held firmly on the shaft flats. Gloves should be worn
when using tension release lever.
Hazardous or unsafe practices could result in personal injury or death.
The tubing, including all attachments and connections must be in place before adjusting the spring tension.
- If the load exceeds spring tension, the tubing will drop, and tension must be increased.
- If tube is fully retracted but spring tension seems excessive (rapid retraction), decrease tension.
Tension should always be enough to retract the tubing and to keep the cable stop against the guide.
1
National System of Garage Ventilation
714 N. Church St. / P.O. Box 1186
Decatur, IL 62525
[phone] / [phone] / (fax)[phone]
NSGV.com [email protected]

NSGV BB-4 BALANCER
I, O, & M MANUAL
Spring Tension Adjustment cont.
To Increase Tension: Engage a wrench on the flats on the mainspring shaft and turn in the “+” direction as shown in Fig. 1.
To Decrease Tension: Engage a wrench on flats on mainspring shaft. As tension release lever on opposite side of balancer is gently
pushed, the shaft will unwind. Control unwinding with firmly held wrench.
After adjusting the tension, pull the cable to the fullest extension to ensure full cable travel. If the cable does not reach full extension,
some tension must be released. If proper tension and extension cannot be achieved, another unit may be required. Please consult the factory.
RATCHET LOCK
The ratchet lock works in two positions in one complete rotation. Pull the cable to the desired location and let the cable retract slightly
until the lock engages. To release the lock, pull the cable out about 6 inches. For constant tension, the ratchet lock may be disengaged. Turn the
release knob counter-clockwise while pulling the cable in and out slightly to engage the lock release lever.
CABLE STOP ADJUSTMENT
The cable stop can be moved up along the cable to attain the most desirable working height.
NOTE: Moving the cable stop will reduce the active travel distance.
MAINTENANCE & SERVICE
Maintenance: Due to the design, this balancer will require little maintenance other than a periodic check of the cable, safety chain, and
hanger for wear. All worn parts or cable should be removed from service and/or replaced at once.
Service: National recommends returning the balancer to the factory for any service requirements due to the strong spring inside the
unit.
Lubrication: All bearings, springs, etc. are permanently lubricated at the factory and should require no further lubrication.
2
National System of Garage Ventilation
714 N. Church St. / P.O. Box 1186
Decatur, IL 62525
[phone] / [phone] / (fax)[phone]
NSGV.com [email protected]