GPro V25 - Motor Stalling in Bypass; Switch Malfunctions; Motor Overheating Causes

6
EN
TROUBLESHOOTING
(
CONTINUED
)
SYMPTOM POSSIBLE CAUSE
(
S
)
CORRECTIVE ACTION
D. Motor stalls when
operating in
bypass mode
1. Motor protector
activated
1. Turno󰀨switch.Allowmotor
to cool, then turn on switch
2. Wiring defective 2. Use Wiring instructions in
the Installation Section of
manual to ensure proper
connections
3. Bypass poppet binding
or damaged
3. Using instructions in the
Repair Section, remove the
bypass poppet, spring and
O-ring. Clean cavity. Inspect
components and replace,
as necessary
4. Rotor or vanes worn 4. Check rotor and vanes for
excessive wear. Replace as
needed
5. Motor damaged 5. Replace pump
E. Switch fails to
operate motor
1. Switch or electrical
connections faulty
1. Inspect for blown fuse,
defective wiring or switch,
or improper electrical
connections. Refer to Switch
Replacement instructions in
the Repair Section
2. Motor protector
activated
2. Verify the correct power
source.Turno󰀨switch.Allow
motor to cool, then turn on
switch
3. Motor damaged 3. Replace pump
F. Overheating of
motor
1. Duty cycle too long 1. Pump operation should not
exceed the standard duty
cycle of 30 minutes ON, and
30 minutes OFF. Allow the
pump to cool for 30 minutes
2. Running too long in
bypass mode
2. Limit bypass operation to
10 minutes
3. Strainer clogged 3. Inspect strainer (see
Maintenance/Repair
section). Replace, if
necessary
4. Suction pipe clogged
or damaged
4. Remove pump from tank.
Inspect suction pipe. Clean
or replace, as necessary