Pelco PT780 service manual Maintenance

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3.0 MAINTENANCE

If you need to remove the enclosure, protect the RediLINK™ connector area against moisture, dust, dirt, etc. Failure to do so could result in a bad connection. Also, damage to the pan and tilt unit or enclosure could occur when power is turned on.

The following servicing should be done every six months with average use.

1.Remove the PT780’s outer casing.

a.Remove the Phillips screw on each side of the pan and tilt unit.

b.Place your hands under the cover halves. Exert a strong, upward force to release the covers from their internal latching devices.

c.Pull the cover halves away from the pan and tilt unit. Set the covers down or hang them by the eyelets inside the covers. (The wire and hook on which to hang the covers is not provided.)

2.Inspect the gaskets around the cover, tilt shaft, and spindle for damage.

3.Refer to Figure 1. It shows the parts locations of the tilt assembly. Look for similar orientations of parts when adjusting the pan assembly.

4.Check the backlash adjustment.

Backlash is the slack or binding in a pan and tilt base mount. Determine back- lash by lifting the maintenance assembly, grasping the base, and wiggling it. There should not be any play or binding between the gear (A) and worm drive

(B). Play or binding indicates a backlash problem.

• One backlash problem involves a worm and worm gear connection loose enough to cause slipping or tight enough to cause binding.

• The second involves a too-loose or too-tight chain, usually causing symp- toms similar to the worm and worm gear problem–slipping or binding.

a.Verify that the worm drive (B) is fully seated in the worm gear (A). If it is not:

(1)Locate the worm-driven gear for either the pan or the tilt motor link- age. Loosen the three hex screws (F) holding the worm in place, but leave enough thread in place to hold the assembly on the mount.

(2)Using your thumbs, gently move the worm forward or pull the as- sembly back from the worm gear to either tighten or loosen the gear spacing to the worm gear. Move the base of the pan and tilt to check the adjustment.

(3)If you get movement in the base, press a finger down in the middle of the worm assembly. If you get no movement in the base, use your thumb and forefinger to pull the worm assembly back until you get movement.

(4)When the spacing is correct, tighten the hex screws. Start with the middle screw to ensure proper spacing.

(5)Remove the screw (C) in the gear train nut (D).

(6)Tighten the gear train nut to remove any play.

(7)Line up the hole in the gear train nut with the nearest hole in the gear train bracket (E).

(8)Replace the screw.

Pelco Manual C342SM (12/98)

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Contents PT780 Legacy Series Pan and Tilts Maintenance C342SM 12/98 Contents General Description Maintenance Pan and Tilt Adjustments PT780 Series Wiring Diagram Wiring DiagramsExploded Assembly Diagrams Pelco Manual C342SM 12/98 COND226S SWIJS138BSWI1SM1 CONA37S Pelco Manual C342SM 12/98 Pelco Manual C342SM 12/98 ZH8LWSSL ZH6LWSSLZH6-32NUTSH ZH8-32NUTSHPelco Manual C342SM 12/98 Warranty Warranty and Return Information

PT780 specifications

The Pelco PT780 is a versatile pan/tilt positioning system specifically designed for surveillance and security applications. This state-of-the-art unit is known for its robust construction, reliability, and exceptional tracking capabilities, making it a popular choice for both indoor and outdoor environments.

One of the most notable features of the PT780 is its high-performance pan and tilt movement, which enables a full 360-degree horizontal rotation and a +90 to -90-degree tilt range. This extensive range allows operators to monitor large areas without the need for multiple cameras. The unit is equipped with a powerful motor, ensuring smooth and fast movement, which is essential for tracking fast-moving objects.

The PT780 supports various camera models, making it a flexible choice for different surveillance needs. It can accommodate standard CCTV cameras as well as more advanced models, including those with high-definition capabilities. This adaptability allows users to upgrade their surveillance systems without needing to replace the entire positioning system.

In terms of technology, the Pelco PT780 is designed to integrate seamlessly with existing security systems. It is compatible with various protocols, such as Pelco-D and Pelco-P, which facilitates easy integration with many DVRs, NVRs, and control panels on the market. This feature is particularly valuable for organizations that aim to enhance their security infrastructure without completely overhauling their current systems.

Another important characteristic of the PT780 is its durability. Made from high-quality materials, the unit is built to withstand harsh weather conditions, making it suitable for outdoor applications. It often comes with an IP rating that ensures protection against dust and water, further increasing its reliability in challenging environments.

Moreover, the PT780 is designed for user-friendly operation. It includes intuitive controls that allow for precise movements and easy setup. Additional features, such as programmable presets, further enhance operational efficiency by enabling users to quickly switch to predefined surveillance positions.

Overall, the Pelco PT780 stands out in the market for its combination of robust design, versatile compatibility, and user-friendly features. Whether used for monitoring large outdoor areas or providing security in commercial buildings, the PT780 is a proven solution for effective surveillance needs. Its innovative technologies and characteristics make it a wise choice for any security professional.
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