Vestil AHSN Series Instruction Manual page 22

Knockdown steel adjustable-height gantry cranes

Use Instructions

Before using the crane for the first time, perform the "Initial Inspection" described on p. 24.

Crane operators are responsible for operating the crane in a safe manner. To reduce the likelihood

of serious personal injuries or death resulting as a consequence of negligent operation:

 Only trained, qualified crane operators should use this device. The operating instructions in this manual

supplement safe crane and hoist operation practices learned during your training program.

 ALWAYS apply safe material handling practices learned during your training program.

 All personnel not participating in crane use must stay out of the crane operation area during use. Be certain no

person or object is under any part of the boom (I-beam) or the suspended load at any time and particularly

before lowering it. Instruct all persons to remain at a safe distance during operation.

 Always carefully watch the boom and any load hanging from it while using the crane.

 Always follow the hoist and trolley manufacturers' instructions regarding proper use of their products.

 BEFORE the load is connected to the hoist, lock or immobilize the casters (for instance with chocks).

 DO NOT use the crane and notify your supervisor and maintenance personnel if: 1) you observe any damage

or hear unusual noise during operation; 2) if you observe any warping or deformation of the beam, the

uprights, the load hook or chain (or cable).

Height adjustment:

Support the I-beam so that the height adjustment pins can be removed,

for instance with the tines of a fork truck or by attachment to an overhead

hoist. Raise the beam to the desired height; then reinstall the adjustment

pins. Each pin must extend completely through a yoke (see Fig. 8).

Proper loading:

Position the trolley and hoist directly above the load. Proper centering

requires the operator to center the trolley and hoist above the center of

the load as well as to position the long axis of the I-beam above the

center of the load. Proper positioning is diagrammed below in Fig 9.

FIG. 9: Loading the crane

Properly centered hoist & trolley

Improperly centered hoist & trolley

Rev. 1/4/2017

AHSN, MANUAL.doc

Fig. 8: Pin uprights at selected height

Upright

Yoke

Height

adjustment

Leg

Page 22 of 26

Hitch