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Rev: 10.2017
BMF Pre-Engineered Skid IOM
15
TABLE 7 - Troubleshooting
Issue
Signs of issue
Actions
Increasing
frequency of
backwash cycle
1.
Backwash flow or duration
is not adequate to flush
filter tanks of all
contaminants
2.
Insufficient sand volume
3.
Increased concentration of
contaminants in water
supply
1.
Adjust backwash flow or duration
2.
Add media sand to achieve proper volume
3.
Adjust backwash frequency or reduce
pressure differential setting to achieve more
frequent backwash cycles
Automatic
backwash
fails to cycle
1.
Controller power may be off
or circuit breaker tripped
2.
Improper setting of
differential switch
3.
Solenoid malfunctioning
4.
Loss of sufficient pressure
to actuate valve(s)
1.
Be sure wiring is connected correctly. Turn on
power. Controller may be faulty and need
replacement.
2.
Adjust as necessary
3.
Check connections, clean ports and check
for the sound of the solenoid actuating.
Replace solenoid if necessary.
4.
Check air regulator for proper adjustment.
Check air lines for leaks.
Media sand appears
downstream
1.
Incorrect media sand (i.e.
too fine and too small)
2.
Broken, damaged, or
missing lateral
1.
Replace media with proper sized media
2.
Repair or replace laterals of the underdrain
Backwash valve
leaks
1.
Obstruction in the valve
seat
2.
Rubber seating is worn or
damaged
3.
Actuator Diaphragm
damaged
4.
Linkage out of adjustment
1.
Remove the obstruction
2.
Replace valve
3.
Replace diaphragm
4.
Adjust linkage
Water hammer
1.
Air in tanks
2.
Long backwash line causing
vacuum
1.
Bleed off trapped air in system. Air vent on
system may be required.
2.
Install vacuum breaker on backwash line.
Pump motor runs
hot
1.
Motor located in direct
sunlight
2.
Poor ventilation
3.
Low voltage
1.
Cover motor with some type of sun shade if
possible
2.
All motors require air movement for cooling.
Make sure that motor has a fresh source of air
for cooling
3.
Check voltage with meter
Содержание BMF Series
Страница 17: ...Rev 10 2017 BMF Pre Engineered Skid IOM 17 PUMP CURVES ...
Страница 18: ...Rev 10 2017 BMF Pre Engineered Skid IOM 18 ...
Страница 19: ...Rev 10 2017 BMF Pre Engineered Skid IOM 19 ...
Страница 20: ...Rev 10 2017 BMF Pre Engineered Skid IOM 20 ...
Страница 21: ...Rev 10 2017 BMF Pre Engineered Skid IOM 21 ...
Страница 22: ...Rev 10 2017 BMF Pre Engineered Skid IOM 22 ...
Страница 23: ...Rev 10 2017 BMF Pre Engineered Skid IOM 23 ...
Страница 24: ...Rev 10 2017 BMF Pre Engineered Skid IOM 24 ...
Страница 34: ...Rev 10 2017 BMF Pre Engineered Skid IOM 34 Appendix 1 Pump IOM ...
Страница 35: ...INSTALLATION AND MAINTENANCE INSTRUCTIONS FOR ELECTRIC MOTORS Frames 143 5T 586 7T ...