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USER MANUAL SLBU Chief
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Technical line drawing of a mechanical mounting bracket with four arms and central hub (no text or symbols)SLBU

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Technical line drawing of a mechanical mounting bracket with four arms and central hub (no text or symbols)SLMU
Universal Interface Brackets Pattes de fixation d'interface universelles Universalanschlussplatten
DISCLAIMER
Milestone AV Technologies and its affiliated corporations and subsidiaries (collectively "Milestone"), intend to make this manual accurate and complete. However, Milestone makes no claim that the information contained herein covers all details, conditions or variations, nor does it provide for every possible contingency in connection with the installation or use of this product. The information contained in this document is subject to change without notice or obligation of any kind. Milestone makes no representation of warranty, expressed or implied, regarding the information contained herein. Milestone assumes no responsibility for accuracy, completeness or sufficiency of the information contained in this document.
Chief® is a registered trademark of Milestone AV Technologies. All rights reserved.

IMPORTANT SAFETY WARNINGS!

WARNING: A WARNING alerts you to the possibility of serious injury or death if you do not follow the instructions.

CAUTION: A CAUTION alerts you to the possibility of damage or destruction of equipment if you do not follow the corresponding instructions.

WARNING: Failure to read, thoroughly understand, and follow all instructions can result in serious personal injury, damage to equipment, or voiding of factory warranty! It is the installer's responsibility to make sure all components are properly assembled and installed using the instructions provided.

WARNING: Failure to provide adequate structural strength for this component can result in serious personal injury or damage to equipment! It is the installer's responsibility to make sure the structure to which this component is attached can support five times the combined weight of all equipment. Reinforce the structure as required before installing the component.

WARNING: Exceeding the weight capacity can result in serious personal injury or damage to equipment! It is the installer's responsibility to make sure the combined weight of all components attached to the SLBU-SLMU interface brackets does not exceed 50 lbs (22.68 kg).

WARNING: Use this mounting system only for its intended use as described in these instructions. Do not use attachments not recommended by the manufacturer.

WARNING: Never operate this mounting system if it is damaged. Return the mounting system to a service center for examination and repair.

WARNING: Do not use this product outdoors.
--SAVE THESE INSTRUCTIONS--
DIMENSIONS

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[95.2] Ø 3.75 BOLT CIRCLE 4X 7.5° 4X 32.5° 1 1/2" NPT [8.7] 4X Ø .27 [190.2] R7.49 [26.97] 1.06 [169.07] 6.66 [119] 4.69 [88.6] 3.49 [93] 3.66 [143.7] 5.66 [82.6] 3.25 (SLBU with RMA shown)LEGEND
![]() | Tighten Fastener | ![]() | Pencil Mark |
| Apretar elemento de fijación | Marcar con lápiz | ||
| Befestigungsteil festziehen | Stiftmarkierung | ||
| Apertar fixador | Marcar com lápis | ||
| Serrare il fissaggio | Segno a matita | ||
| Bevestiging vastdraaien | Potloodmerkteken | ||
| Serrez les fixations | Marquage au crayon | ||
![]() | Loosen Fastener | ![]() | Drill Hole |
| Aflojar elemento de fijación | Perforar | ||
| Befestigungsteil lösen | Bohrloch | ||
| Desapertar fixador | Fazer furo | ||
| Allentare il fissaggio | Praticare un foro | ||
| Bevestiging losdraaien | Gat boren | ||
| Desserrez les fixations | Percez un trou | ||
![]() | Phillips Screwdriver | ![]() | Socket Wrench |
| Destornillador Phillips | Llave de cubo | ||
| Kreuzschlitzschraubendreher | Llave de cubo | ||
| Chave de fendas Phillips | Chave de caixa | ||
| Cacciavite a stella | Chiave a brugola | ||
| Kruiskopschroevendraaier | Dopsleutel | ||
| Tournevis à pointe cruciforme | Clé à douilles | ||
![]() | Open-Ended Wrench | ![]() | Remove |
| Llave de boca | Quitar | ||
| Gabelschlüssel | Entfernen | ||
| Chave de bocas | Remover | ||
| Chiave a punte aperte | Rimuovere | ||
| Steeksleutel | Verwijderen | ||
| Clé à fourche | Retirez | ||
![]() | By Hand | ![]() | Optional |
| A mano | Opcional | ||
| Von Hand | Optional | ||
| Com a mão | Opcional | ||
| A mano | Opzionale | ||
| Met de hand | Optie | ||
| À la main | En option | ||
![]() | Hex-Head Wrench | ![]() | Security Wrench |
| Llave de cabeza hexagonal | Llave de seguridad | ||
| Sechskantschlüssel | Sicherheitsschlüssel | ||
| Chave de cabeça sextavada | Chave de segurança | ||
| Chiave esagonale | Chiave di sicurezza | ||
| Zeskantsleutel | Veiligheidssleutel | ||
| Clé à tête hexagonale | Clé de sécurité |
TOOLS REQUIRED FOR INSTALLATION

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1/2" 1/4" (included) 5/32" (security - included) #2PARTS

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OR A (1) [SLBU Plate] A (1) [SLMU Plate] B (4) [SLBU/SLMU Leg] C (2) [Security Cover Bracket] [SLBU Only] D (4) [Thumb Nut] [SLBU Only] [All Points Security Kit] E (2) 10-24 x 3/8" [SLBU Only] G (4) H (1) 10-24 x 3/8" 5/16-18 x 1/2" [SLBU Only] [SLBU Only] J (1) 5/32" (security) [SLBU Only] [No hardware designated "F"] [Universal Projector Interface Hardware Kit] K (4) 8-32 x 3/8" L (4) 8-32 x 1/4" M (4) M2.5 x 10mm N (4) M3 x 10mm P (4) M4 x 10mm Q (4) M5 x 14mm R (4) M6 x 14mm S (4) M4 T (4) 1/4-20 U (1) 1/4" V (1) 5/32" (security) [Universal Hardware Kit - Long Screws] W (4) M3 x 25mm X (4) M4 x 25mm Y (4) M5 x 25mm Z (4) M6 x 25mm AA (4) .500 x .257 x .625ASSEMBLY AND INSTALLATION
Remove Screw Adapters from SLBU/SLMU Legs
- Press locking buttons on SLBU/SLMU leg (B) firmly and simultaneously push clip cover toward enclosed sliding stud mount bracket and screw. (See Figure 1)
- Screw adapter and attached height-adjustment nut will be released. Set aside for later use. (See Figure 1)
- Repeat Steps 1-2 for each leg to be used in installation.

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(B) sliding stud mount bracket and screw locking button x 2 clip cover (side view) height-adjustment nut screw adapterFigure 1
Attach Projector to SLBU/SLMU

WARNING: Exceeding the weight capacity can result in serious personal injury or damage to equipment! It is the installer's responsibility to make sure the combined weight of all components attached to the SLBU-SLMU interface brackets does not exceed 50 lbs (22.68 kg).
- Determine proper size screw to insert into projector. Test Phillips screws (M, N, P, Q and R) provided until one fits the projector holes.
- Insert screws through M4 flat washers (S), screw adapters with height-adjustable nuts and into projector holes. (See Figure 2)
NOTE: Only use washers (S) if using M or N screws to attach screw adapters to projector.

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(M, N, P, Q or R) (S) x 3 or 4 (with M or N only) screw adapters with nutsFigure 2
- Adjust height-adjustment nuts to desired level. (See Figure 3)
NOTE: Height-adjustment nuts should be adjusted as low as possible while ensuring that the legs will always clear any elevated surfaces on the projector. All nuts must be adjusted to the same level to ensure an even mount.
IMPORTANT ! : The optional Universal Hardware Kit - Long Screws (see Parts drawing) may be used if there is interference with any part of the projector, and more height is required to clear elevated surfaces of the projector.

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fully loweredFigure 3
- Place SLBU/SLMU legs (B) over screw adapters and height-adjustment nuts. (See Figure 4)
NOTE: Make sure arm latch clips are in the unlocked position.

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(B) x 3 or 4Figure 4
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Press locking buttons on SLBU/SLMU leg (B) firmly and simultaneously push clip cover away from enclosed sliding stud mount bracket until clip cover is in the locked position. (See Figure 5)
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Repeat Step 5 for remaining legs.

WARNING: Make sure legs have securely locked onto height-adjustable nuts with the latch clips. If the legs are not properly locked onto the adapters, the projector could fall from the SLBU/SLMU mount causing SERIOUS INJURY or DEATH!

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5 locking buttons open position locked positionFigure 5
- Manuever legs so that sliding stud mount brackets and screws are towards the middle of the projector. (See Figure 6) and (See Figure 7)
- Position sliding stud mount brackets and screws so that SLBU or SLMU main plate (A) can be evenly mounted to legs. (See Figure 6) and (See Figure 7)
- Use 1/4" hex key (U) to secure Allen nuts (T) to screws on sliding stud mounts. (See Figure 6) and (See Figure 7)
NOTE: The following examples are two of many possible scenarios based on typical examples of mounting hole patterns. Specific connection points will vary based on the hole pattern. Multiple scenarios may be used for each specific hole pattern as long as the weight of the projector is centered and balanced after mounting.

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Three-hole scenario example (A) 9 (T) x 3 sliding stud mount brackets and screwsFigure 6

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Four-hole scenario example (A) ⑨ (T) x 4 sliding stud mount brackets and screwsFigure 7
Attach SLBU/SLMU to RPA or RPM
- On SLBU, partially install four thumb nuts (D) to SLBU main plate screws. Be sure to install thumb nuts with tapered side down. (See Figure 8)
NOTE: If using optional security brackets (C) to connect SLBU bracket to RPA or non-locking RPM mount, refer to Security Bracket Installation section prior to installing thumb nuts.

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Install thumb nuts with tapered side down (D) x 4 (A)Figure 8
- Attach SLBU/SLMU to RPA/RPM. Refer to RPA/RPM installation manual for details.
Security Screw Installation (Optional)
- Install #8-32 x 3/8" button head security screws (K) into security holes on SLBU/SLMU legs. (See Figure 9)
NOTE: Up to two security screws can be installed on each leg. It is recommended that screws be installed in holes that are difficult to access to achieve maximum security.
NOTE: Cable ties (not included) may be used instead of the security screws. Thread cable tie through both holes on leg and secure cable tie.

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(B) (K) security holeFigure 9
Security Bracket Installation (Optional)
NOTE: Security brackets (C) can only be used when connecting SLBU bracket to RPA or non-locking RPM mounts.
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Install security brackets (C) over screws on SLBU main plate. (See Figure 10)
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Partially install thumb nuts (D) onto SLBU main plate screws. (See Figure 10)

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(D) x 4 (C) x 2Figure 10
CLAUSES DE NON-RESPONSABILITÉ

B (4)
[Pied SLBU/SLMU]

K (4)
8-32 x 3/8"
L (4)
8-32 x 1/4"

M (4)
M2.5 x 10 mm

N (4)
M 3 x 10 mm

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(D) x 4 (C) x 2Figure 10
HAFTUNGSAUSSCHLUSS
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Technical illustration of a mechanical assembly with four cross-shaped components mounted on a base plate (no text or symbols)
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[169,07] 6,66 [119] 4,69 [88,6] 3,49 [93] 3,66
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[143.7] 5.66 [82.6] 3.25text_image
(D) x 4 (C) x 2Abb. 10











