Liberty Pumps AE21L=3, AE24L=3, AE21H=3, AE21L=4, AE21H=4 Installation Manual

...
4 (2)

Single Phase Duplex

AE21L=3, AE21H=3, AE21L=4, AE21H=4

AE24L=3, AE24H=3, AE24L=4, and AE24H=4

Manufactured by SJE-Rhombus®

Installation Instructions and Operation/Troubleshooting Manual

7000 Apple Tree Avenue

Bergen, New York 14416

Phone: 1-800-543-2550

Email: liberty@libertypumps.com www.libertypumps.com

This control panel must be installed and serviced by a licensed electrician in accordance with the National Electric Code NFPA-70, state and local electrical codes.

All conduit running from the sump or tank to the control panel must be sealed with conduit sealant to prevent moisture or gases from entering the panel. NEMA 1 enclosures are for indoor use only, primarily to provide a degree of protection against contact with enclosed equipment. Cable connectors are not required to be liquid-tight in NEMA 1 enclosures. Do not use NEMA 1 enclosures if subjected to rain, splashing water or hose-directed water. NEMA 4X enclosures are for indoor or outdoor use, primarily to provide a degree of protection against corrosion, windblown dust and rain, splashing water and hose-directed water. Cable connectors must be liquid-tight in NEMA 4X enclosures.

ELECTRICAL SHOCK HAZARD

Disconnect power before installing or servicing this product. A qualified service person must install and service this product according to applicable electrical and plumbing codes.

EXPLOSION OR FIRE HAZARD

Do not use this product with flamable liquids Do not install in hazardous locations as defined by National Electrical Code, ANSI/NFPA 70.

Failure to follow these precautions could result in serious injury or death. Replace product immediately if switch cable becomes damaged or severed. Keep these instructions with warranty after installation. This product must be installed in accordance with National Electric Code, ANSI/NFPA 70 so as to prevent moisture from entering or accumulating within boxes, conduit bodies, fittings, float housing, or cable.

Warranty void if panel is modified.

Call factory with servicing questions:

1-800-543-2550

7249000B

Liberty Pumps AE21L=3, AE24L=3, AE21H=3, AE21L=4, AE21H=4 Installation Manual

Installation Instructions

Most single phase duplex panels are designed to operate as three or four float systems. The three float system is standard performing the common pump stop, lead pump start, and lag pump start/high level alarm functions. The four float system utilizes separate floats for lag pump start and high level alarm.

NOTE: Options ordered may affect the number of floats and their functions. Please reference the schematic provided with the control panel for proper installation.

Installation of Floats

CAUTION: If control switch cables are not wired and mounted in the correct location, the pump system will not function properly.

WARNING: Turn off all power before installing floats in pump chamber. Failure to do so could result in serious or fatal electrical shock.

1.Use float label kit to identify and label cables on both

float and stripped ends (stop, lead, lag, alarm, etc.). See schematic for float options.

2.Determine your normal operating level, as illustrated in

Figures 1-2.

3.Mount float switches at appropriate levels as illustrated in Figures 3-5. Be sure that floats have free range of motion without touching each other, or other equipment in the basin.

If using the mounting clamp; follow steps 4-6.

4.Place the cord into the clamp as shown in Figure 5.

5.Locate the clamp at the desired activation level and secure the clamp to the discharge pipe as shown in Figure 5.

NOTE: Do not install cord under hose clamp.

6.Tighten the hose clamp using a screwdriver. Over tightening may result in damage to the plastic clamp. Make sure the

float cable is not allowed to touch the excess hose clamp band during operation.

NOTE: All hose clamp components are made of 18-8 stainless steel material. See your SJE-Rhombus® supplier for replacements.

7249000B

- 2 -

FIGURE 1: Three float duplex

FIGURE 2: Four float duplex

FIGURE 3: Internally weighted float

FIGURE 4: Float with cable weight

FIGURE 5: Mounting clamp detail

Installation Instructions

Mounting the control panel

1.Determine mounting location for panel. If distance exceeds the length of either the float switch cables or the pump power cables, splicing will be required. For outdoor or wet installation, we recommend the use of a SJERhombus® liquid-tight junction box with liquidtight connectors to make required connections.

You must use conduit sealant to prevent moisture or gases from entering the panel.

2.Mount control panel with mounting flanges furnished with control panel.

3.Determine conduit entrance locations on control panel. Check local codes and schematic for the number of power circuits required.

NOTE: Be sure the incoming power, voltage, amperage, and phase meet the requirements of the pump motors being installed. If in doubt, see the pump identification plate for electrical requirements.

4.Drill proper size holes for type of connectors being used.

NOTE: If using conduit, be sure that it is of adequate size to pull the pump and switch cables through. You must use conduit sealant to prevent moisture or gases from entering the panel.

5.Attach cable connectors and/or conduit connectors to control panel.

FOR INSTALLATION REQUIRING A SPLICE,

FOLLOW STEPS 6-10;

FOR INSTALLATION WITHOUT A SPLICE,

GO TO STEP 11.

6.Determine location for mounting junction box according to local code requirements. Do not mount the junction box inside the sump or basin.

7.Mount junction box to proper support.

8.Run conduit to junction box. Drill proper size holes for the type of conduit used. Attach liquidtight connectors to junction box.

9.Identify and label each wire before pulling through conduit into control panel and junction box. Pull pump power cables and control switch cables through connectors into junction box.

Make wire splice connections at junction box.

10.Firmly tighten and seal all fittings on junction box. Insure all cable connectors are liquid-tight and sealed.

11.If a junction box is not required, connect pump and float wires to proper position on terminals. See schematic inside control panel for terminal layouts.

12.Connect control/alarm and pump power conductors to proper position on terminals. See schematic inside control panel for terminal connections.

NOTE: It is the recommendation of the factory to use separate pump and control/alarm power sources.

VERIFY CORRECT OPERATION OF CONTROL

PANEL AFTER INSTALLATION

IS COMPLETE.

7249000B

- 3 -

Operations

Single phase duplex panels are designed to operate with three or four floats for pump sequencing.

The standard float functions are common pump stop, lead pump start, lag pump start/alarm (three floats), or separate lag and alarm floats (four

floats).

Three Float Operation: As the liquid level rises to the stop float and tips it to the ON (closed) position, the panel will remain inactive. As the liquid level tips the lead float, the lead pump will start. If the liquid level tips the lag/alarm float, the lag pump will start and the audio/visual alarm will activate. Both pumps and the alarm will remain active until the liquid level drops and the lag float is in the OFF (open) position. At this time the alarm will silence. Both pumps will remain on until the liquid level drops to normal and all three floats are in the OFF (open) position. When both pumps have stopped running, the alternator will switch the lead pump and lag pump operating functions in the next sequence.

Four Float Operation: The alarm will activate and remain on only if the alarm float is tipped to the ON (closed) position.

Alarm System (Horn and Indicator - standard)

When an alarm condition occurs, a red light and a horn will be activated. If the test/normal/silence switch is moved to the silence position, the horn will be silenced. When the alarm condition is cleared, the alarm system is reset. The alarm system can be tested by moving the test/normal/ silence switch to the test position.

HOA Switch

A hand-off-automatic switch is provided for each pump. In the hand mode, the pump will turn on unless other safety features are employed. In the automatic mode, the pump will turn on from commands by the float switch(es).

Pump Run Lights

The run light will be ON in either the hand or the automatic mode when the pump is called to run.

Control and Alarm Fusing

Control and Alarm Lights

Lights will illuminate when control/alarm power is supplied.

Float Status Lights

Lights will illuminate when the respective float is in the closed position.

Circuit Breaker (optional)

The pump circuit has a thermal-magnetic circuit breaker which provides pump disconnect and branch circuit protection.

Dry Auxiliary Contacts (standard feature)

Normally open - Contacts are open under normal conditions and closed when alarm condition is present.

Normally closed - Contacts are closed under normal conditions and open when alarm condition is present. Both types automatically reset once alarm condition is cleared.

NOTE: Some options ordered may not be included in this manual. Certain options will require alternative circuitry not including float status and control/ alarm indicators.

For information regarding the operations of options not listed here or servicing questions, please call a Liberty Pumps customer service technician at

1-800-543-2550

Warranty void if panel is modified.

The control circuit and alarm circuit are fused

separately. - 4 -

7249000B

Loading...
+ 8 hidden pages