Product Manual

Rev. 9/10/2014 LPC, manual.doc

Page 5 of 12

Use Instructions:

The operating instructions in this manual are meant to supplement the operation recommendations

of ASME standard B30.20.

Only trained, designated persons should use the plate clamp. “Designated person” means someone selected by his

or her employer, or by a representative of the employer, as competent to use the plate clamp. Trainees under the

direct supervision of a designated person may use the clamp. Maintenance personnel and personnel who perform

tests also may use the plate clamp when necessary for the performance of their employment duties.

Step 1: Perform a proper, “Every Lift” inspection as described in the most recent edition of ASME B30.20, BEFORE

you connect the clamp to a hoisting device. Proceed to the next step ONLY IF the clamp passes the inspection and is

deemed safe to use by designated inspection personnel.

Step 2: Connect the clamp to the hoisting device. Only connect the clamp to the hoist via a safety hook to prevent

accidental detachment from the hoist.

Step 3: Unlock the clamp by pulling the lock ring away from the clamp and rotating the lock wheel assembly

downwards (white arrow in photo 1). Move the trolley to position the clamp above the sheet material. The sheet

must balance when lifted, so position the clamp above the center of the sheet. The center of the sheet is

indicated by a dashed line in photo 2. [NOTE: The sheet must weigh AT LEAST as much as the “Minimum

uniform plate weight” of your clamp, which appears in the Table on p. 2.]

DO NOT attempt a horizontal lift; only lift vertically. DO NOT push or pull the clamp so that the

hoist chain/rope is not vertical. All horizontal adjustments in the position of the clamp must be accomplished by

moving the trolley. This is important because any deflection of the chain/rope from straight up-and-down will

cause the load to swing when lifted. A swinging load may cause serious personal injuries.

Hoist

Safety

Hook

Properly

functioning

safety latch

1 2

The gripper (11) must contact

the cam (2). If they do not,

adjust the position of the gripper

until contact is made.

Proper

Vertical

Lift

Improper

Horizontal

Lift