Front Load Filter Option; Filter Gauges - McQuay Vision CA Series Installation And Maintenance Manual

Service and Maintenance
Table 15: Belt deflection force (per Browning specifications)
Sheave diameter (in)
Cross
Smallest
section
sheave
diameter range
3.0 to 3.6
A, AX 3.8 to 4.8
5.0 to 7.0
3.4 to 4.2
B, BX 4.4 to 5.6
5.8 to 8.6
4.4-6.7
5V, 5VX
7.1-10.9
11.8-16.0

Front Load Filter Option

Front loaded filter options require that the filters be removed
and replaced from inside the unit.
To remove filters, rotate the wire clips. This releases both the
prefilter and the final filter. When installing clean filters, check
to verify the filters are fully seated in the frame. See Figure 42.
Figure 42: Frame and filters with holding clips
26
Cross section A, B, 5V
rpm
range
Used belt
1000 to 2500 3.7
2501 to 4000 2.8
100 to 2500 4.5
2501 to 4000 3.8
1000 to 2500 5.4
2501 to 4000 4.7
850 to 2500
2501 to 4000
860 to 2500 5.3
2501 to 4000 4.5
860 to 2500 6.3
250 to -4000 6.0
500-1749
1750-3000
3001-4000
500-1740 12.7
1741-3000 11.2
500-1740 15.5
1741-3000 14.6
Deflection force (lbs)
New belt Used belt
5.5
4.2
6.8
5.7
8.0
7.0
7.9
6.7
9.4
8.9
18.9
16.7
23.4
21.8

Filter Gauges

Filter gauges indicate pressure drop for installed filters.
Table 16 shows the typical filter pressure drop for clean filters
at rated air flow. The tables also show a final pressure drop for
front loaded filters.
Where a single filter gauge is used, the prefilters can be
removed to check the pressure drop of the final filters.
Figure 43: Filter gauge
Cross section AX, BX, 5VX
New belt
4.1 6.1
3.4 5.0
5.0 7.4
4.3 6.4
5.7 9.4
5.1 7.6
4.9 7.2
4.2 6.2
7.1 10.5
7.1 9.1
8.5 12.6
7.3 10.9
10.2 15.2
8.8 13.2
5.6 8.5
14.8 22.1
13.7 20.1
17.1 25.5
16.8 25.0
McQuay IM 672-3