Installation

5.6 Drive Chain Tension

Figure 11 is a finished header assembly that has been installed. Also note the idler barrel has been bolted back into place back.

Chain tension should be checked after the door is cycled a few times.

The M&I drive chain is to be tensioned so the deflection of the slack (bottom side) of the chain is equal to 2% of the distance between the shafts. For door over 12’ x 12’ this value is 3/8” (9.5 mm). For doors under 12’ x 12’ this value is

9/32” (7.1 mm).

5.6.1 Operator assembly

The operator is not assembled to the door when it is shipped. On the drive side of the header assembly, 4 weld studs serve as attachment points for the operator. When assembling the operator, the slots on the operator mounting surface should be centered on the studs Tighten using the provided flat washers and nuts. Assemble the chain.

5.6.2 Chain Tension Adjustment

Figure 12a

If the Chain tension needs to be adjusted, you need to do the following:

Support the operator prior to loosening the operator mounting bolts.

Loosen the 4 bolts that attach the operator to the header assembly.

Either raise or lower the operator to achieve the proper tension.

Retighten the 4 bolts that attach the operator to the header assembly.

Figure 12b

RCA L

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RCA RCA L owner manual Drive Chain Tension, Operator assembly, Chain Tension Adjustment
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RCA L specifications

RCA, or Radio Corporation of America, has been a pivotal player in the electronics industry, particularly known for its rich history in radio, television, and audio technology. One of its notable advancements is the RCA L series, which highlights the brand's commitment to quality and innovation.

The RCA L series is characterized by its cutting-edge features that cater to modern consumer needs. One of the main highlights is its integration of high-definition audio and video capabilities, allowing users to enjoy crystal-clear sound and visually stunning imagery. This makes the RCA L series an attractive option for entertainment enthusiasts who demand excellence in both audio and video outputs.

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Furthermore, the RCA L series is often designed with energy efficiency in mind. Models typically use advanced LED technology that not only enhances the picture quality but also reduces power consumption, making it an environmentally friendly choice. This focus on sustainability is increasingly important in today’s market where consumers are more conscious of their environmental impact.

In conclusion, the RCA L series exemplifies the brand's legacy of innovation by merging high-quality audio-visual technology with modern smart features and user-friendly designs. Its commitment to energy efficiency further underscores its relevance in a rapidly evolving electronics landscape, making it a commendable choice for consumers seeking reliable and advanced entertainment solutions.
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