Install Instructions

F76S WATER FILTERS AND MV876B AUTOMATIC-BACKWASH CONTROLS
5 33-00557—01
Commercial and Industrial
Installations (1-1/2 and 2 in.
models)
Commercial and industrial installations have high flow
requirements. For proper operation, limit flow across the
F76S screen. For example, a two-inch pipe may have a
120 gpm flow at 12 fps linear velocity across a clean
screen. High linear velocity impacts dirt deeply into the
screen, making it difficult to backwash and causing the
screen to plug up quickly. In these situations, install
multiple F76 filters in parallel. See Fig. 3.
Fig. 3. Parallel installation of three F76S Water Filters.
Advantages of parallel installation:
• Increased cleaning capacity. Backwash interval is
reduced.
• Elimination of system downtime. Can backwash one
F76S while the others maintain required flow.
Another consideration in commercial and industrial
installations is the backwash interval. Because of the
high flow requirements, screens need cleaning on a
regular basis. An MV876 Automatic-Backwash Control
can be installed to backwash the F76S automatically.
INSTALLATION
CAUTION
Equipment Damage Hazard.
Excessive pressure or temperature can damage
the device.
Ensure water temperature and pressure are below
maximum ratings specified.
CAUTION
Equipment Damage Hazard.
Excessive heating can damage internal parts.
Before sweating, separate the tailpieces and nuts
from the filter body.
F76S
When installing an F76S, use the following procedure:
1. Shut off water supply by closing the water supply
valve.
2. Install the F76S in the water line with the arrow
pointing in the direction of water flow.
3. Install pressure gauge in the F76S center port (see
Fig. 5).
IMPORTANT
When using an MV876, stop here and install the
MV876.
4. Ensure the F76S air vent is open.
5. Slowly open the water supply valve.
6. Once the F76S sump fills with water, close the air
vent and fully open the water supply valve.
Fig. 4. Installing the F76S.
MV876
When adding an MV876 to an existing F76, the procedure
can vary depending on the F76 model.
Installation on an F76S
1. Open the backwash outlet ball valve.
2. Remove the backwash outlet handle.
3. Install the MV876. See Fig. 5 and 6.
NOTE: When you rotate the MV876, it closes the
backwash outlet ball valve.
4. Ensure the F76S air vent is open.
5. Slowly open the water supply valve.
6. Once the F76S sump fills with water, close the air
vent and fully open the water supply valve.
7. Program the desired backwash interval by pushing
the program button until the desired interval num-
ber appears in the display.
100
150
50
0
200
Resi
deo
Braukmann
INLET
PIPE
M17360A
100
150
50
0
200
R
esid
e
o
Bra
uk
m
an
n
ISOLATION VALVE.
1
1
1
1
1
100
150
50
0
200
Resideo
Braukmann
100
150
50
0
200
Resideo
Braukmann
M16480A
AIR VENT