Manual Model Testing; Testing Automatic Pump Operation - Little Giant 5 Serie Manual Del Propieratio

OPERATION
Risk of damage to pump or other equipment.
• Always check the power cord and electric receptacle for damage or corrosion before each use. The power cord on
these units cannot be replaced. If damaged, replace the pump.
• Do not let the unit run dry (without liquid). It is designed to be cooled by pumping fluid. The seal may be dam-
aged and the motor may fail if the pump is allowed to run dry.

Manual Model Testing

1. Plug the power cord directly into an electrical outlet or switch on power at the junction box.
2. Confirm that the pump is functioning as intended.
• A pump with screen will remove water within 3/8". A pump without screen will remove water
within 1/8".
3. Unplug the unit as soon as the pump stops pumping water or the suction sound changes to prevent
the pump from running dry.
• If the unit is going to be idle for a period of time, follow the cleaning instructions in
Service" on page
IMPORTANT: Do not let the unit freeze as this may destroy the unit.

Testing Automatic Pump Operation

Some pump models are equipped with a diaphragm switch. Rising water applies pressure to the dia-
phragm, which activates the switch, turning on the pump. As the water level falls, the pressure
decreases until the switch deactivates, turning off the pump. For the switch to function properly, it is
vented to the atmosphere through a breather tube routed through the pump's power cord. Non-restric-
tive air flow in the breather tube is required.
1. Place the pump in an empty test basin.
2. Connect the pump to power with correct voltage. Refer to the pump nameplate.
3. If there is a valve on the discharge line, be sure the it is open.
4. Run water into the basin until the pump is activated. Do not run the pump without water.
5. Ensure the pump and its control switch are functioning as intended.
6. If the pump doesn't turn on, refer to
7. Confirm that the ON/OFF levels are within specification.
• A pump with screen will remove water within 3/8". A pump without screen will remove water
within 1/8".
8. Allow the pump to operate through several on/off cycles.
9.
"Testing the Diaphragm Switch" on page
OPERATION
Manual Model Testing
"Periodic
8.
7