R&M Materials Handling, Inc
STAGEMAKER
®
Concert Hoist
Springfield, Ohio USA
Technical Guide
:
800 955-9967
June 2009
www.rmhoist.com
RM-STGMKR-TG-2002-6-ENG.doc
4
®
1 Introduction
1.1 Mounting
Positions
Normal position is where the hoist is mounted with load chain down and hoist body up. The load block
attaches to the load and moves up and down. The hoist body is stationary. All of the models (SM1
through SM25) when specially equipped can be mounted in the normal position.
Inverted position is where the hoist is mounted with load chain up and hoist body down. The hoist body
attaches to the load and moves up and down with the load. Hoists in the inverted position are easier to
install and setup because all the cabling is at the same level, and the hoist is at truss level. Only SM1,
SM2, SM5 or SM10 hoists when properly equipped can be mounted in the inverted position. For inverted
SM16, 20 or 25 positions, please contact the factory.
Normal position (chain down)
Inverted position (chain up)
1.2 Installation Types
STAGEMAKER
®
concert hoists can be used in a mobile installation or a fixed installation. Careful
consideration of the installation type and the mounting position should be taken before ordering so that
the hoist can be properly equipped to meet the requirements.
Mobile installation means the hoist is used in temporary or short-term setup. Hoists used in a mobile
installation are typically mounted in the inverted position.
Some examples of mobile installations: “on-tour” concerts, ground and roof supports, exhibitions, product
presentations, and the circus.
Local safety regulations must be followed at all times. These regulations could require:
Additional safety such as a steel rope between the upper suspension point and the lower hook
point of the load or a redundant system.
De-rated capacity of the hoist
Second brake
For more advance lifting applications, use BGV-C1 Configuration D hoists providing enhanced
safety features
Fixed installation means the hoist is used in a more permanent or long-term setup. Some of examples of
fixed installations: theaters, studios, and arenas.
In fixed installations the hoist is mounted in the normal position and situated usually out-of-sight. Because
of the out-of-sight situation, over-travel electrical limit switches and low voltage control are mandatory. All
of the models (except the SM2) when specially equipped can be mounted in fixed installations.
