Installation Guide

Acro Building Systems
Pump Jack System User Guide
Model #10100 – Pump Jack
Model #10110 – Brace
Model #10120 – Guardrail Holder
Model #10130 – Work Bench
Model #10135 – Pole Anchor
Refer Question to
[e-mail]
800-267-3807
www.acrobuildingsystems.com
Warning: Failure to follow instructions for the use of this product can result in
serious personal injury.
Pump Jack System Instructions:
General: 1) Always erect and use in accordance with local, state and federal OSHA
regulations. 2) Not an anchor point. 3) Scaffolding and guardrails are meant for use
by experienced tradesmen having full knowledge in its use. 4) OSHA regulations
require that employer provide training in the use and care of this product.
CAPACITY: PUMP JACK SCAFFOLDING SHOULD NOT CARRY MORE
THAN TWO PEOPLE OR 500 POUNDS BETWEEN ANY TWO POLES. This
capacity considers a 4:1safety factor as required by OSHA when installed and used
in accordance with the instructions.
Choosing a Walk Plank:
Wood walk planks shall be made of Scaffold Grade or equivalent lumber. When fabricated from 2-inch full thickness, undressed
lumber the maximum span between supports shall not exceed 9 feet. When fabricated from 2-inch nominal thickness lumber the
maximum span between supports shall not exceed 7 feet. Aluminum walk planks must have been manufactured for that purpose and
shall not exceed 24 feet in length. The maximum span between supports shall not exceed 11 feet. Aluminum walk planks longer than
12 feet and less than 24 feet must always be supported in the middle of the platform with a pumpjack in addition to one at each end.
Fabricating Pump Jack Poles:
Wood poles should be made of clear straight-grained fir wood, free from all knots or defects. Poles must consist of two 2x4’s that
measure 1 1⁄2”x 3 1⁄2” nailed together with 10d common nails. All nails should be spaced 12 inches center-to-center, staggered
uniformly from opposite outside edges. The two 2x4’s should provide a finished pole 3”x 3 1⁄2”. Splices may be used to extend the
pole to a maximum height of 30 feet. The 2x 4’s must overlap a minimum of 3 feet and nails should be spaced a minimum of 6 inches
center to center for a distance of 18 inches on each side of the splice. Mending plates shall be installed at all splices so as to develop
the full strength of the member. Counter-sink all nails.
Setting the Pump Jack Poles:
1) Space poles uniformly not more than 7 feet on center when using 2 inch thick nominal walk planks, 9 feet on center when using 2
inch undressed lumber or 11 feet on center when using aluminum walk planks. Always support aluminum walk planks longer than 12
feet at both ends and in the middle of the walk platform. Poles shall not exceed 30 feet in height. 2) Attach a brace at the top and
bottom of each pole by loosening the wing nut on the brace’s clamping mechanism and sliding the clamping plates over the wood pole
so that the pole’s seam faces the carriage bolt. Then tighten at the desired height. Nail clamp to pole. 3) Position the poles along the
work wall and secure in place. The round bar of the brace should be fastened to the work wall at right angle to the walk plank. The
angle bar of the brace is then fastened to the right or left as desired. Space between the brace arms is 32 inches, enabling installation
on studs 16 inches apart. The seam of the pole must face the work wall. 4) All poles must bear on afi rm foundation or mudsill. Install
a pole anchor, then insert pole and secure in place. Or, using a 2”x10” square piece of lumber remove enough dirt to insert board
creating a firm level foundation. Secure pole in place by blocking all four sides with 2x4’s and nailing in place. 5) Install triangular
steel bracing at the bottom of the pole to prevent movement. 6) Additional pump jack braces must be installed vertically along each
pole no more than 10 feet apart.
Installing Pump Jack, Workbench, Guardrail and Walk Planks:
Pump Jack: Attach the pump jack to the pole with the platform arm facing the work wall by removing the round pin and roller, crank
and square pedal. Place the pump jack over the pole and reconnect parts. Secure all parts by inserting cotter pins and bending one leg
90 degrees. Open pump jack by fully extending the platform arm. Walk Planks: Place walk plank onto platform arm. All scaffold
planks must rest securely ontothe platform arm and extend no less than 6 inches and no more than 12 inches over the support arm.
When overlapping of platforms is required there must be a minimum of 12 inches of overlap. The support arm must be centered