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2000 Fire Door-Fan Manual updated 2002-05-28 Page 27 of 58
1.Turn ON the DM-1. Wait 30
seconds. Set first toggle to
“ZERO”
2. Press “Set to Zero” on DM-1 3. Set all toggles up. They should
be in the “Test, Room & Flow #1”
positions.
4. When this light is lit, all
connections have been made at
blower and it’s ready to go.
Turn on the power to blower #1.
5. Adjust the speed control to
get the required room pressure.
The blower must run at half
speed or more. If not change to a
lower (more restrictive) range.
Read the room pressure for 30
seconds.
6. When the desired room pressure
is achieved, flip the toggle up to
“Flow”. Read the flow pressure
(Flow #1) for 30 seconds. Turn the
blower OFF with the rocker switch
and turn the blower around to test
the other direction. Go to Step 3.