Install Instructions

F76S WATER FILTERS AND MV876B AUTOMATIC-BACKWASH CONTROLS
7 33-00557—01
installation is different. Residential applications can
require backwash only once a week, or once every few
weeks. Industrial applications can require backwash
several times a day. To determine the backwash interval,
see Determining Backwash Interval in the Operation
section.
NOTE: For residential applications, backwash the F76S
once a week regardless of need is an excellent
guideline to follow to ensure F76S peak operat-
ing efficiency.
Fitting Batteries and Fuses
The batteries (not included) provide power to the MV876
in the event of a power loss. This is desirable especially
when power loss occurs during the reverse rinsing cycle.
To provide this, the MV876 requires four AA alkaline
batteries. Install these batteries in the cover of the
MV876:
CAUTION
Electrical Shock or Equipment Damage Hazard.
Can shock individuals or short equipment
circuitry.
Disconnect power supply before installation.
1. Unscrew the four housing screws and set them
aside. (see Fig. 8).
IMPORTANT
Ensure that the connecting cable is protected
from damage while the MV876 cover is loose.
2. Remove the MV876 cover (see Fig. 8).
3. Insert four AA alkaline batteries (see Fig. 8).
4. Replace the cover.
5. Replace and tighten the four housing screws.
NOTES:
1. To avoid unnecessary battery drainage, con-
nect the MV876 to power as soon as possi-
ble after inserting new batteries.
2. To ensure the availability of battery power,
replace the batteries after a power loss.
If the 800 mA fuse blows, replace it:
CAUTION
Electrical Shock or Equipment Damage Hazard.
Can shock individuals or short equipment
circuitry.
Disconnect power supply before installation.
1. Unscrew the four housing screws and set them
aside. (see Fig. 8).
IMPORTANT
Ensure that the connecting cable is protected
from damage while the MV876 cover is loose.
2. Remove the MV876 cover (see Fig. 8).
3. Remove and discard the old fuse (see Fig. 9).
4. Insert a new 800 mA fuse (see Fig. 9).
5. Replace the cover.
6. Replace and tighten the four housing screws.
7. Reconnect the power supply.
Fig. 8. Removing the MV876 cover.
Fig. 9. Installing batteries in the MV876.
Fig. 10. Replacing the MV876 fuse.
MV876B
M17352
M17353
MV876B
M17351