Leak Check

The Purpose of the leak check is to locate the major leaks in the enclosure before performing the door fan test. Often large holes are located that must then be sealed before the door fan test can begin. Sometimes the smoke test identifies dampers that are not closing correctly or not at all. If so, that damper must be repaired before the test can proceed.

Leak check. Blow air in to get +15 Pa room pressure & use smoke to locate leaks in:

9Rocker switch selects between OFF, Local or Remote.

9With rocker in OFF position, plug red power cord into wall outlet.

9Clear tube and 5-pin connector are plugged in

9Adjust speed from blower or console to get a 15 Pa room pressure. Ideal for finding leaks.

Analog gauge clip uses speed control mounted on blower.

Turn on DM-1.

Set all toggles into the UP position. Speed control knob is first turned all the way up till fan starts and then backed off quickly to desired room pressure.

Retrotec Smoke Puffer is used to locate leaks and to detect airflow direction.

See section called: Room Leak Location & Repair

It describes where to look for leaks.

2000 Fire Door-Fan Manual

updated 2002-05-28

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Canon 2000 manual Leak Check
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2000 specifications

The Canon EOS 2000D, also known as the Rebel T7 in some regions, is an entry-level DSLR that caters to beginners and amateur photographers looking to explore the world of digital photography. Launched as a successor to the EOS 1300D, the 2000D brings a host of features and technologies that make it an appealing choice for those stepping up from smartphone photography.

One of the standout characteristics of the Canon 2000D is its 24.1-megapixel APS-C CMOS sensor. This high-resolution sensor enables users to capture stunningly detailed images with vibrant colors and rich tonal range. Coupled with the DIGIC 4+ image processor, the camera delivers improved performance in terms of image quality, low-light capability, and overall processing speed.

The Canon 2000D features a 9-point autofocus system that includes one cross-type point, helping users achieve accurate focus on subjects. While this autofocus system may not be the most advanced in the market, it is sufficient for general photography tasks, including portraits, landscapes, and even some action shots.

The camera boasts a 3-inch LCD screen, which provides a clear interface for composing shots and navigating settings. Although it lacks a touchscreen, it offers straightforward usability that appeals to novice photographers learning the ropes of DSLR operation. The optical viewfinder with approximately 95% coverage allows users to view scenes through the lens for precise framing.

For those interested in videography, the 2000D offers Full HD 1080p video recording at 30 frames per second. While it may not excel in advanced video features, it provides a solid entry point for hobbyists looking to experiment with video content. The presence of built-in Wi-Fi and NFC capabilities allows for easy sharing of images and remote control of the camera via a smartphone app, enhancing the overall user experience.

Additionally, the Canon 2000D supports a range of Canon's EF and EF-S lenses, providing users with the flexibility to explore various photography styles. Its compact and lightweight design makes it highly portable, making it a great companion for travel and everyday photography.

Overall, the Canon 2000D is a versatile and user-friendly DSLR that strikes a balance between image quality, functionality, and ease of use, making it an excellent choice for those embarking on their photographic journey.
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