Tabla de contenido
Idiomas disponibles
Idiomas disponibles
SYMPTOM
Yellow run light stays on
continuously
Pump is noisy and pump
rate is low
Grease and solids have
accumulated and will not
pump out of basin
Grinder Pumps
Model: AGPR Series
Trouble Shooting
POSSIBLE CAUSES
1. H-O-A switch may be in the hand
position
2. Level control switch may have failed
causing pump to continue to operate
when water is below lower control
3. Grinder assembly may be partially
clogged causing pump to operate at
very reduced capacity
4. Gate valve or check valve may be
clogged causing low pump flow.
5. Pump may be air locked.
1. Grinder assembly may be partially
clogged with some foreign objects
causing noise and overload on the
motor.
2. Rotating cutter may be rubbing on
stationary cutter due to bent shaft or
misalignment.
1. Lower control switch may be set too high.
2. Trash and grease may have accumulated
around floats causing pump to operate
erratically
13
CORRECTIVE ACTION
1. Switch to automatic operator
2. Disconnect level control. Set
ohmmeter for a low range,
such as 100 ohms full scale
and connect to level control
leads. Actuate level control
manually and check to see
that ohmmeter shows zero
ohms for close switch and full
scale for open switch (Float
Switch)
3. Check grinder assembly for
freedom of operation, security,
and condition. Clean the cavity
and inlet of any obstruction
4. Remove and examine
valves for proper Installation
and freedom of operation
5. Loosen union slightly to allow
trapped air to escape.
Verify that turn-off level of
switch is set so that impeller
cavity is always flooded. Clean
vent hole.
1. Check grinder assembly for
freedom of operation,
security, and condition. Clean
impeller cavity and inlet of any
obstruction.
2. Replace shaft if needed
1. Check and reset the control switch
2. Run pump on hand operation
for several minutes with small
amount of water running into
basin to clean out solids and
grease.
Tabla de contenido
