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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:
Rocker switch selects between OFF, Local or
Remote.
With rocker in OFF position, plug red power
cord into wall outlet.
Clear tube and 5-pin connector are plugged in
Adjust speed from blower or console to get a
15 Pa room pressure. Ideal for finding leaks.
Retrotec Smoke Puffer is used to locate leaks and to detect airflow direction.
See section called:
It describes where to look for leaks.
2000 Fire Door-Fan Manual
Analog gauge clip uses
speed control mounted on
blower.
Room Leak Location & Repair
updated 2002-05-28
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.
Page 18 of 58
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