Maintenance; Troubleshooting - Little Giant OS3 Series Owner's Manual

MAINTENANCE

Troubleshooting

MAINTENANCE
• Clean the preset level control with alcohol to ensure it remains free of rust, mud, soap or any con-
ductive material.
• Clean the probes yearly, keeping them free of debris, calcium, or iron deposits.
• Replace the alarm panel's 9-volt battery yearly.
• When replacing fuses in the control panel, use 5mm x 20mm 1/2-amp for F1 and 5mm x 20mm
1-amp for F2.
Troubleshooting
Problem
Panel not plugged into
outlet
Pump not plugged into
panel
Pump does not run Defective contactor
Overload tripped (optional
models)
Loose level sensor wires
Pump failure
Pump turns off
before water Poor pump or system
reaches bottom ground
probe
Overload trips fre-
Improper overload setting Set overload relay dial to full load amps of pump.
quently
For technical assistance, parts, or repair, please contact:
800.701.7894 | littlegiant.com
Form 998668 Rev. 002 09/20
Probable Causes Corrective Action
Plug power cord into outlet and check power.
Plug pump into panel plug.
Replace contactor.
Press RESET button.
Tighten wire connections.
Replace pump.
Check grounding system.
Franklin Electric Co., Inc. | Oklahoma City, OK 73157-2010
Copyright © 2020, Franklin Electric, Co., Inc. All rights reserved.