AEC Self Cleaning Continuous Filters User Manual
Page 26
Self Cleaning Continuous Filter Chapter 3: Installation
25
Safety Latches
Due to the extreme pressure that your unit operates under, it has been equipped with safety
latches on the door. These latches require specific amounts of pressure and turns (shown in
the tables below) to undo them.
Release Pressure (Lbs.)
Pressure Per Turn
Change (Lbs.)
Per ½ Turn
Full Turns
Available
Minimum
Maximum
43
180
5.96
2.98
23
• For negative systems, each latch must be set at “0” turns for minimum release pressure
(43 lbs.). With three (3) latches per door, the total force required to open the door is
129 lbs. (40 lbs./sq. ft.)
• For positive systems, each latch must be set to open just above operating pressure (See
table below).
Pressure at SCF
Inlet (in. Wg.)
Column 1
Column 2
Over
Up To
Turns From Loosest Position
Turns Off of Tightest Position
5
0
23
5
6
1
22
6
7
2
21
7
8
3
20
8
9
4
19
9
10
5
18
10
11
6
17
11
12
6-1/2
16-1/2
12
13
7-1/2
15-1/2
13
14
8-1/2
14-1/2
14
15
9-1/2
13-1/2
15
16
10-1/2
12-1/2
16
17
11-1/2
11-1/2
To adjust the latch, place it in the door closed position. When in this position, one rivet
which holds the laminated cam together is exposed.
Adjusting Unmounted Latches
1. Turn the adjusting screw (Shown in Figure 9 below) counter-clockwise to its lowest
position, making sure that the square nut does not come off the ball pin.
Figure 14: Safety Latch Components
2. Tighten the adjusting screw until the desired pressure setting is reached (See Column
1 in the Table above for pressure setting).