003-001 PowerAssist Installation
Page 3 of 24
Rev. 0–27APR07
WARNING!
INCORRECT COUNTERWEIGHT CAN OVERLOAD
HOIST AND CAUSE LOAD TO FALL
UNDERSTAND HOW THIS SYSTEM WORKS. COUNTERWEIGHT SYSTEM PROPERLY AT TIME OF
INSTALLATION. APPLY DEVICES AND WARNING LABELS TO PREVENT USER FROM ALTERING
COUNTERWEIGHT
NOTICE!
NOTICE!
NOTICE!
NOTICE!
THIS INSTALLATION INSTRUCTION IS FOR A SYSTEM WITH A BATTEN
CAPACITY OF 2000LB OR LESS. CONTACT JR CLANCY FOR SYSTEMS
REQUIREING A MAX LOAD GREATER THAN 2000LBS.
The PowerAssist is designed to be installed with a dedicated counterweight arbor. In the most
common application the arbor is loaded with one half of the capacity of the counterweight set,
not
to exceed 1000 lbs.
In this case, when the batten is loaded with 2000 lbs of equipment, the load
is counterweighted by 1000 lbs and the winch bears the remaining 1000 lbs. See figure 1 below.
When the batten has no load on it, the 1000 lbs weight of the arbor is supported by the winch.
See figure 2 below.
Other arrangements are possible. However, in no case may the winch be subjected to loads of
over 1000 lbs.
Introduction: How the system works
1000 lbs
Counterweight
No load on Batten
1000 lbs hoist load
1000 lbs
Counterweight
2000 lb Batten Load
1000 lbs hoist load
Figure 2: Counterweight assist hoist
system with batten unloaded
Figure 1: Counterweight assist hoist
system with full load on batten