Rev. 3/19/2021
HPC MANUAL
Copyright 2021 Vestil Manufacturing
Page 4 of 9
(Continued from p. 4)
exceed these usage parameters. Permanently remove a clamp from service before exceeding the maximum
number of load cycles.
•
DO NOT elevate a load if the hoist rope/chain or rigging is kinked. Make sure that multiple part lines are not
twisted around each other before elevating the load.
•
DO NOT modify the product in any way without first obtaining written approval from Vestil. Unapproved
modifications automatically void the
(p. 11) and might make the product unsafe to use.
•
Avoid load swing by making sure the hoist rope/chain is vertical before raising the load.
•
Slowly and carefully raise, lower, and move loads with the clamp. DO NOT start or stop suddenly. Sudden
stops/starts might induce load swing or disrupt the connection between a clamp and the sheet.
•
DO NOT drag loads with a clamp.
•
DO NOT remove or deface labeling applied to the clamp. DO NOT use a clamp UNLESS each label and tag is
in place, undamaged, and easily readable from a reasonable distance. See
•
Inspect the product as instructed in
on p. 7-8.
•
DO NOT elevate a load any higher than necessary to move it. Keep it as close to the ground as possible.
•
DO NOT use a plate clamp tagged “Out of service” or if it is similarly designated.
NATIONAL STANDARDS
HPC-series products are Below-the-Hook lifting (BTH) devices. They facilitate the handling of materials in
sheet form. American National Standard ASME B30.20 (the “Standard”) can be purchased online at
https://blog.ansi.org/2018/10/asme-b30-20-18-changes-below-hook-lifting/
. The Standard provides inspection,
testing, maintenance, and operation instructions for users of BTH devices. Acquire a copy of the Standard. Apply
all provisions that apply to
Structural and Mechanical Lifting Devices
. Contact local occupational safety and health
specialists to determine whether there are laws, ordinances, codes, etc. (“authorities”) in addition to the Standard
that apply to BTH devices in the location where the plate clamp will be used. If content in this manual conflicts
with provisions in authorities or the Standard, apply the provisions from the authorities or Standard. Please
department to report conflicts as soon as they are discovered.
MINIMUM UNIFORM SHEET WEIGHT & UNIFORM CAPACITY
In order for the clamp mechanism to securely attach to a sheet of material, a sheet of material must weigh at
least as much as the
of the model of your plate clamp which is
provided in Table 1
.
Do not attempt to lift a sheet if the sheet weighs less than the MUPW of your clamp. Do not
attempt to lift a sheet of material that exceeds the capacity of your clamp.
CAPACITY VARIES WITH SLING ANGLE
Clamp capacity decreases if the line of attachment to the hoisting device is not vertical. Table 2 provides
capacity figures that correspond to specific ranges of sling angles.
Table 1
MODEL
MINIMUM UNIFORM
SHEET WEIGHT
UNIFORM CAPACITY
NET WEIGHT
HPC-20
400 lb. (181.8 kg)
2,000 lb. (909.1 kg)
9 lb. (4.1 kg)
HPC-40
800 lb. (363.6 kg)
4000 lb. (1,818.2 kg)
12 lb. (5.5 kg)
HPC-80
1,600 lb. (727.3 kg)
8,000 lb. (3,636.4 kg)
15 lb. (6.8 kg)
HPC-100
2,800 lb. (1272.7 kg)
10,000 lb. (4,545.5 kg)
17 lb. (7.7 kg)
Table 2
SLING
ANGLE
ADJUSTED CAPACITY
% OF UNIFORM
CAPACITY
HPC-20
HPC-40
HPC-80 HPC-100
0° ≤ A ≤ 60°
100%
2000 LB.
909.1KG
4000 LB.
1818.2KG
8000 LB.
3636.4KG
10000 LB.
4545.5KG
60° ˂ B ≤ 90°
75%
1500 LB.
681.8KG
3000 LB.
1363.6KG
6000LB.
2727.3KG
7500 LB.
3409.1KG
90° ˂ C ≤ 120°
50%
1000 LB.
454.5KG
2000 LB.
909.1KG
4000 LB.
1818.2KG
5000 LB.
2272.7KG
˃120°
0%
Do not use Do not use Do not use Do not use
