Joyce BG450D - Manual (Page 3)

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1-4 Warranty
Seller warrants its products to be free from defects in material and workmanship under normal
and proper use in accordance with instruction of seller for a period of one year from the date of
shipment to buyer. Seller's liability under such warranty or in connection with any other claim
relating to the products shall be limited to the repair, or at seller’s option, the replacement or
refund of the purchase price, of any products or parts or components thereof which are returned
to seller freight prepaid and which are defective in material or workmanship. Products or parts or
components thereof, which are repaired or replaced by seller, will be returned to buyer freight
collect. This warranty is not intended to cover consumer products, as defined in the Magnuson-
Moss Warranty-Federal Trade Commission Improvement Act, 15 U. S. C. Sections 2301-12,
which are purchased by buyer for purposes other than resale. If buyer is not intending to resell the
products, and if the products are consumer products as defined in the Magnuson-Moss Act, the
foregoing warranty, but not the limitation of seller's liability, shall be null and void. EXCEPT AS
EXPRESSLY STATED ABOVE, SELLER MAKES NO WARRANTY, EXPRESS OR IMPLIED,
WHETHER OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR
USE OR OTHERWISE, ON THE PRODUCTS, OR ON ANY PARTS OR LABOR FURNISHED
DURING THE SALE, DELIVERY OR SERVICING OF THE PRODUCTS.
1-5 Precautions of Use and Installation
1. Mechanical stops provided on BG 450 bevel gear jacks are not designed as end-of-travel
stops. The customer is responsible for setting travel limits.
2. Travel can be limited using optional limit switches. These limit switches need to be set by the
customer. In most applications, factory or manufacturer-assisted installation is not required.
However, it is necessary that appropriate, qualified personnel perform the installation of
Joyce/Dayton products.
3. Joyce/Dayton BG 450 bevel gear jacks are not rated for shock-loading or extreme vibration. It
is the responsibility of the user to ensure these conditions are not imposed on the actuator.
4. In the event that service or maintenance is required, the load must be secured or removed
before any work can begin.
5. BG 450 bevel gear jacks can be mounted and operated in any orientation. Standard BG 450
bevel gear jacks have vents. Properly plug or vent holes to prevent dirt or moisture form
contaminating the actuator. Contact Joyce/Dayton with questions regarding the mounting
orientation.
6. Never allow the bevel gear jack to retract beyond the minimum closed position or extend
beyond the maximum open position, as damage to the unit can occur.
7. Do not use in applications where BG 450 bevel gear jacks can be jammed against an
immovable object.
8. A brake motor is required on BG 450 bevel gear jacks with double lead lifting screws. This
prevents the load from drifting when power is off.
9. Allowable load values differ based on the configuration of the jack (upright of inverted) and on
load characteristics (tension or compression). See Section 3-3 and contact Joyce/Dayton with
any questions regarding load characteristics.
10. Follow instructions in Section 2-3 to calculate the loads and duty cycles that are permissible on
BG 450 bevel gear jacks.
1-6 General Installation instructions
1. Ensure that all personnel who will service or operate equipment are familiar with its use and
limitations.
2. Secure or remove the load before any installation procedures begin.
3. Be certain the rating of the BG 450 bevel gear jack meets or exceeds the load.
4. The BG 450 bevel gear jack must be mounted on a rigid structure sufficient to support the
maximum possible load. An under-designed structure could lead to premature wear or failure.
5. Drive shaft alignment is critical. Misalignment will cause reversing stresses in rotating
members and will lead to fatigue failure. Correct coupling specification is critical for systems
with more than one bevel gear jack.