NOTICE NO. TN-291A - Vari-Lite
Contents
1. CT INFORMATION For more information on this technical notice or on VARI LITE products please contact your Authorized VARI LITE Dealer or Vari Lite customer service 17 OCTOBER 2014 Notice No TN 291A2. PHILIPS VARIZELITIE tecunicat nonce PRODUCT All Products SUBJECT Mounting Brackets Note This notice has been updated with additional information Please read it in its entirety and keep for future reference OVERVIEW Vari Lite would like to remind all owners Authorized Dealers and Service Centers to inspect as part of their normal maintenance routine all mounting brackets for bracket integrity and proper latching operation as described herein A WARNING Defective or damaged mounting brackets must NOT be used for hanging lumi naires If a bracket is found to be damaged it must be removed from service and destroyed Using a defective or damaged mounting bracket can lead to bracket failure and cause serious injury If you have any questions as to any aspect of this Technical Notice please contact Vari Lite customer service at 1 877 VARILITE or 1 214 647 7880 AN WARNING Any repairs or maintenance to VARI LITE luminaires should only be performed by a trained and qualified service technician or at an Authorized VARI LITE Service facility MOUNTING BRACKET INSPECTION Two mounting brackets refer to the product s manual for the Vari Lite part number for your specific luminaire are supplied with some VARILITE luminaires should be periodically inspected for wear and fitness for use Mounting Brackets Note Vari lite recommends the following criteria Mounting Bracket Detail be used in a routine inspection Us
3. R 2014 Notice No TN 291A PHILIPS VARI LITE tecnica nonce Truss Hook Hardware by others When installing hanging hooks on mounting brackets Vari Lite strongly recommends the use of a Belleville washer by others Figure 3 shows EEEN examples when installing a truss hook or claw as eS iy h w 4 shown in Figure 2 on page 3 of this notice a The Belleville washer s size should be Figure 3 Belleville Washer Examples approximately 0 505 inch inner diameter by 1 00 inch outer diameter Belleville washers are available in various thicknesses and any of the following thicknesses 0 035 inch 0 043 inch 0 050 inch 0 073 inch are acceptable for the application described herein The washer serves two purposes e To spread out the load When a washer IS NOT used the bolt head without a washer concentrates the load in a smaller area creating focused stress on the steel bracket making premature failure possible A steel washer is recommended to spread this load over a larger surface area e To keep the bolt in place The recommended Belleville washer maintains tension in the bolted assembly and prevents it from vibrating loose If a Belleville washer is not available a regular flat washer measuring in diameter of linch minimum can be used in conjunction with a suitable split lock washer situated between the bolt head and flat washer Step 2 Determine required configuration of bracket installation In the examp
4. ers should also f Mounting Bracket consult local and national safety codes and Locking Mechanism recommended industry practices for inspection Mounting bracket should be straight and show no bends or damage e Any mounting bracket that has been bent should be discarded and replaced with a new unit sold individually Figure 1 Mounting Bracket Detail Vari Lite 10911 Petal Street Dallas Texas 75238 USA 1 877 VARILITE 1 214 647 7880 www vari lite com 17 OCTOBER 2014 Notice No TN 291A PHILIPS VARI LITE tecnica nonce Mounting bracket locking springs should be in proper working order e Often Vari Lite has found that the locking mechanism on the mounting brackets has been bent with a tool e Locking mechanisms are to be operated by hand only without the use of any tools Mounting brackets should not be altered or modified e Mounting brackets should not be altered in any way Drilling welding cutting etc can lessen the ability of the mounting bracket to work as designed e Any mounting bracket that has been altered should be discarded and replaced with a new unit Mounting brackets should be inspected more frequently if used during transport e If mounting brackets are used on transport truss or carriage transport system where the luminaire is hung for transporting they must be inspected more frequently for fatigue or damage e The constant loading and unloading of the bolted joi
5. le below brackets may be installed in either orientation as shown in Figure 4 but both must face the same direction Figure 5 shows bracket installation details Bracket Bracket Note Example configuration shown for reference purposes only Refer to the user s manual for your specific model s configuration options Figure 4 Bracket Orientation Example Options 17 OCTOBER 2014 Notice No TN 291A PHILIPS VARIPELITE tecunicat nonce Step 3 While pulling up on locking mechanism release fit keyed holes onto raised mounting buttons at bottom of enclosure Slide forward and release locking mechanism to lock in place Ensure brackets are locked securely Always face brackets in same direction as shown in the example in Figure 5 AN Step 4 Ensure that the bracket locking mechanism is fully seated after the bracket is installed on the luminaire Example Truss Hook Lockin 4 sold separately Mechanism ae Face brackets in racke same direction for Locking all configurations Mechanism Raised Mounting Button Press up to install or release Fit over buttons and slide forward to lock Locked Note Example configuration shown for reference purposes only Refer to the user s manual for your specific model s configuration options Figure 5 Installing Brackets on Luminaire Enclosure Step 5 Refer to luminaire user s manual for complete installation information CONTA
6. nt between the truss hook or claw and the mounting bracket in a transport truss can over time weaken or damage the rail MOUNTING BRACKET INSTALLATION As described in the luminaire owner s manual mounting brackets must be installed in the same direction and be properly locked over mounting posts Hanging the Luminaire Two mounting bracket assemblies as provided with all VARI LITE luminaires except Series 500 and Series 1000 luminaires are used to attach truss hooks or other mounting hardware as required A minimum of one hook per truss hook bracket is required If mounting method does not use truss hooks two attachment points per truss hook bracket are required When attaching more than one point on a single bracket the attach points must be spaced as far apart as possible using the supplied mounting holes Install mounting hardware and brackets Step 1 Install truss hooks also refer to Truss Hook Hardware by others on page 3 of this notice for additional information on two provided truss hook brackets as required Mega Claw Truss Hook not provided ee Bracket Note Various types of truss hooks can be used The Mega Claw truss hook as shown in this example as well as many other standard Example Truss kes hooks can be ordered separately from Vari Hook Installation Lite or your Authorized VARI LITE Dealer po ROSE Truss Hook Hardware wa D not provided Figure 2 Installing Truss Hooks 17 OCTOBE
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