Installation Manual Submersible Dewatering/Effluent Pumps Models 250-Series 1/3 hp 280-Series 1/2 hp 290-Series 3/4 hp FL30-Series 1/3 hp FL50-Series 1/2 hp FL60-Series 6/10 hp FLH60-Series 6/10 hp FL70-Series 3/4 hp FL100-Series 1 hp FL150-Series 1-1/2 hp FL200-Series 2 hp 7000 Apple Tree Avenue Bergen, NY 14416 ph: 800-543-2550 fax: 585-494-1839 www.LibertyPumps.com Copyright © Liberty Pumps, Inc. 2019 All rights reserved.
Contents Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 | EN General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 | EN Operating Constraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 | EN Model Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 | EN Inspection and Storage . . . . . .
Safety Precautions RISK OF ELECTRIC SHOCK Accidental contact with electrically live parts, items, fluid, or water can cause serious injury or death. Always disconnect pump(s) from power source(s) before handling or making any adjustments to either the pump(s), the pump system, or the control panel. All installation and maintenance of pumps, controls, protection devices, and general wiring shall be done by qualified personnel.
Do not remove any tags or labels from the pump or its cord. Keep clear of suction and discharge openings. To prevent injury, never insert fingers into pump while it is connected to a power source. Do not use this product with flammable, explosive, or corrosive fluids. Do not use in a flammable and/or explosive atmosphere as serious injury or death could result. This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. www.
Storage Before Use RISK OF ELECTRIC SHOCK Protect the power and control cords from the environment. Unprotected power and control (switch) cords can allow water to wick through ends into pump or switch housings, causing surroundings to become energized. At no time shall the pump be stored within an incomplete wet basin. The pump shall not be placed into the basin until it can be fully operational. Do not allow the pump to freeze. Pumps are shipped from the factory ready for installation and use.
Float Switch Settings Table 1 includes factory set float levels for automatic models. The turn OFF level must be maintained as it is the minimum water depth to ensure proper cooling. Manual pumps have user-set turn ON levels. Table 1. Factory Set Float Switch Settings For ordinary ground water pumping applications, it is recommended that the sump basin diameter be a minimum of 14”.
Installation Pump RISK OF ELECTRIC SHOCK All installation and maintenance of pumps, controls, protection devices, and general wiring shall be done by qualified personnel. All electrical and safety practices shall be in accordance with the National Electrical Code®, the Occupational Safety and Health Administration, or applicable local codes and ordinances.
Automatic Pump Direct Wiring A 1-1/2” threaded discharge is provided for connection of the discharge pipe. Do not restrict the discharge to below that which is provided on the pump. Schedule 40 PVC pressure pipe is recommended. RISK OF SERIOUS INJURY OR DEATH In 208/230V installations, one side of the line going to the pump is always “hot”, whether the float switch is on or off. To avoid hazards, install a double pole disconnect near the pump installation.
1. Place pump in basin making certain the mounting interface (i.e., guide rail, torque stop) is engaged correctly. Float switch must have adequate clearance to side wall of basin and free, unobstructed movement throughout its complete travel and must not contact the pump, piping, or other objects. 2. If an optional control device or float is used, follow the separate manufacturer’s directions for mounting. Minimum pump turn OFF level must not be set below Table 1 values. 3.
Maintenance and Troubleshooting Verify correct 3-phase pump rotation before retuning to service. RISK OF ELECTRIC SHOCK Accidental contact with electrically live parts, items, fluid, or water can cause serious injury or death. Always disconnect pump(s) from power source(s) before handling or making any adjustments to either the pump(s), the pump system, or the control panel.
Table 2. Troubleshooting Matrix (continued) Problem Pump runs or hums, but does not pump. Possible Cause Discharge line blocked or restricted. Check discharge line for foreign material, including ice if discharge line passes through or into cold areas. Check valve is stuck closed or installed backward. Remove check valve(s) and examine for freedom of operation and proper installation. Gate or ball valve is closed. Open gate or ball valve. Total head (lift height) is beyond pump's capability.
Warranty Liberty Pumps Wholesale Products Limited Warranty Liberty Pumps, Inc. warrants that Liberty Pumps wholesale products are free from all factory defects in material and workmanship for a period of three (3) years from the date of purchase (excluding batteries). The date of purchase shall be determined by a dated sales receipt noting the model and serial number of the pump.
