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10. REPAINTING THE SPEAKER FRONT GRILLE

Note:

Be sure to detach the front grille from the speaker before repainting.

Step 1.

Clean the front grille before painting. 
Wipe with a soft cloth dampened in a detergent. 

Caution

Do not use thinner or other volatile liquids to clean the grille. 

Step 2.

Spray on a uniform, thin coat of paint. 

Cautions 

• Avoid painting with a roller or brush, as the grille mesh holes could become clogged with paint.
• Use appropriate spray paints for the front grille (grille and frame) materials. 

Grille: Rolled steel plate 
Frame: Fire-resistant ABS resin (acrylic paint) 

• Be sure to follow the directions indicated on the paint when painting. 

Step 3.

After the paint has dried, apply another light coat. 

Caution 

Repeating Step 2, apply two or more light coats of paint. 
Application of one thick coat of paint all at once may cause drips or unevenness to show up in the
painted finish, or clog the mesh holes. 

11. INPUT OVERLOAD PROTECTION FUNCTION 

Both the F-2322CU2 and the F-2352CU2 feature internal input overload protection circuitry. If an extremely
high input level is fed to the unit, the protection circuitry automatically cuts off the signal to the speaker
element. 
A drastic reduction in sound volume indicates that the protection circuitry has been enabled. 
In such cases, simply reduce the amplifier volume. The protection circuitry will automatically reset in
approximately 10 seconds. After reset, try to maintain the volume at a level slightly lower than before. 

Caution 

This protection circuitry does not completely protect the unit against extremely high input power levels.
Depending on the type or duration of excessive power input, the protection circuitry might not be enabled,
resulting in damage to the speaker element. Also, if the excessive power input continues for a long period of
time, the circuitry may not be capable of resetting to its original condition. 
Use the system with care so that the speakers are not exposed to excessive power input. 

Summary of Contents for F-2322CU2

Page 1: ...ILING SPEAKER SYSTEMS F 2322CU2 F 2352CU2 F 2322CU2 F 2352CU2 Please follow the instructions in this manual to obtain the optimum results from this unit We also recommend that you keep this manual handy for future reference ...

Page 2: ... Hard or Flexible Conduit 8 6 2 Wiring with Naked Cables 9 7 CABLE CONNECTION TO INPUT CONNECTOR 10 8 SPEAKER INSTALLATION 11 9 REMOVING THE SPEAKER FOR MAINTENANCE 9 1 Detaching the Front Grille 13 9 2 Removing the Speaker 13 10 REPAINTING THE SPEAKER FRONT GRILLE 14 11 INPUT OVERLOAD PROTECTION FUNCTION 14 12 SAFETY AGENCY COMPLIANCE 15 13 SPECIFICATIONS 16 Accessories 16 ...

Page 3: ...ndition may cause fire or electric shock If you detect smoke or a strange smell coming from the unit If no tone sounds Avoid installing the unit in humid or dusty locations in locations exposed to the direct sunlight near the heaters or in locations generating sooty smoke or steam as doing otherwise may result in fire or electric shock Do not operate the unit for an extended period of time with th...

Page 4: ...ker design employs unique acoustic construction to realize a wide area of coverage Uniform sound output levels are achievable not only directly under the speaker but also over a wide radius Because the speaker is provided with both low and high impedance operating capability it can be used in many different applications Front panel mounted input selector switch permits easy verification and change...

Page 5: ...sory Front grille accessory Max 37 1 29 64 Max 37 1 29 64 Max 202 7 61 64 Front Ceiling mounting Ceiling mounting Side F 2322CU2 Unit mm inches Side Rear Front ø230 9 1 16 41 1 39 64 238 9 3 8 ø195 7 43 64 Safety wire accessory Length Approx 600 23 5 8 Max 202 7 61 64 F 2352CU2 Tile bridge accessory Tile bridge accessory Safety wire hook Choke bracket Connector cover Rear Safety wire hook Choke br...

Page 6: ...hat both ends fit securely into the T grids even if the ceiling tile accidentally falls off Ceiling tile T grid Tile bridge accessory Ceiling tile ø200 5 mm 77 8 13 64 Installation procedures Step 1 Cut a ø200 mm 7 7 8 hole in the ceiling Use the supplied paper pattern to position and trace the hole Step 2 Place the supplied tile bridge on the 2 foot tile as shown below T grid 2 foot tile Tile bri...

Page 7: ...f the supplied safety wire around the speaker s safety wire hook and tie its snap ring around a secure C channel bar or suspension pipe 2 foot tile Safety wire accessory Secure C channel bar or suspension pipe Speaker unit Ceiling tile Safety wire accessory Safety wire hook T grid Tile bridge accessory ...

Page 8: ...ter conduit The choke bracket accommodates up to 3 8 inch 9 5 mm flexible conduit When larger diameter conduit should be fit use a suitable fitting commercially available by replacing the existing choke bracket with it Detaching the choke bracket by unscrewing it exposes a 7 8 inch 22 mm hole Install the alternate fitting there 6 WIRING 6 1 Wiring through Hard or Flexible Conduit Note The choke br...

Page 9: ...nsure that the speaker cable is securely fixed After completing the speaker cable connection turn the connector cover in the direction indicated by the arrow and fix the cover with 2 screws Connector cover Plug the wired input connector into the speaker s socket then pull the speaker cable from the choke bracket For wiring the input connector refer to p 10 ...

Page 10: ...s be sure to tighten unused terminal screws to avoid their vibration 5 mm 13 64 From Amplifier To the next speaker If bridging If not bridging 7 CABLE CONNECTION TO INPUT CONNECTOR Recommended cable types Solid copper wire ø1 0 ø1 6 mm equivalent to AWG 18 14 Stranded copper wire 0 75 2 5 mm2 equivalent to AWG 18 14 Step 1 Loosen the 2 cover mounting screws and rotate the connector cover in the di...

Page 11: ...RNING Never hold the F 2352CU2 s diffuser section as a handle to carry the speaker during installation If the diffuser breaks off the unit could fall from an elevated position resulting in possible personal injury Step 2 Rotate and tighten the mounting tab axis screws 3 places on the unit clockwise to their full stop in order to grip the ceiling panel with the mounting tabs Diffuser section Diffus...

Page 12: ...ck side of the grille with the corresponding notches in the unit then rotate the grille to full stop in the direction indicated by the LOCK arrow Tip The front grille employs a double locking system that clicks into place once partway through rotation but only locks into position at its point of full rotation Always be sure to rotate the grille to its full stop Front grille accessory Tab 3 places ...

Page 13: ...rclockwise to full stop then lightly pull it downward Tip The front grille employs a double locking system If the grille cannot be detached when lightly pulled downward it likely has not yet been fully rotated back to the detachment position In such cases take care to rotate the grill fully counterclockwise in order to release the lock 9 2 Removing the Speaker Rotate the 3 mounting tab axis screws...

Page 14: ... finish or clog the mesh holes 11 INPUT OVERLOAD PROTECTION FUNCTION Both the F 2322CU2 and the F 2352CU2 feature internal input overload protection circuitry If an extremely high input level is fed to the unit the protection circuitry automatically cuts off the signal to the speaker element A drastic reduction in sound volume indicates that the protection circuitry has been enabled In such cases ...

Page 15: ... authority having jurisdiction Suitable for use in air handling spaces UL2043 Fire Test for Heat and Visible Smoke Release for Discrete Products and their Accessories Installed in Air Handling Spaces 1998 NFPA 70 National Electrical Code NEC 2002 Article 300 22 c and NFPA 90A Installation of air conditioning and ventilation systems section 2 3 10 1 a exception 3 Output power vs switch settings for...

Page 16: ...eiling thickness 37 mm 1 29 64 Removable locking connector with screw down terminals 2 input terminals and 2 bridge terminals Solid copper wire ø1 0 ø1 6 mm equivalent to AWG 18 14 Stranded copper wire 0 75 2 5 mm2 equivalent to AWG 18 14 Enclosure Steel plate plating Baffle Fire resistant ABS resin resin material grade UL 94 V 0 or its equivalent black Rim Fire resistant ABS resin resin material ...

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