Crane Plumbing 8XSE-HA operation manual C-4.4Overload Protection

WARRANTY NOTE: Both the temperature sensor and moisture detection system must be connected to the motor circuitry such that the motor will be de-energized or sound alarm if excessive motor temperatures are reached and/or if water is detected in the seal chamber and/or motor chamber. Failure to have the above mentioned systems installed and operative, nullifies warranty.

C-4.4) Overload Protection:

The normally closed (N/C) thermal sensor is embedded in the motor windings and will detect excessive heat in the event an overload condition occurs which will then trip and stop the pump. The thermal sensor leads marked P1 and P2 MUST be connected in series with the stop button of the pilot circuit of the magnetic motor controller located in the control panel so that the thermostat will open the circuit before dangerous temperatures are reached. A manual momentary start switch is required to prevent the automatic restarting of the motor when the thermostat resets. For a typical wiring diagram, refer to Fig. 2. In the event of an overload, the source of this condition should be determined and rectified before the pump is put back into normal operation. DO NOT LET THE PUMP

CYCLE OR RUN IF AN OVERLOAD CONDITION OCCURS!

If current through the temperature sensor exceeds the values listed, an intermediate control circuit relay must be used to reduce the current or the sensor will not work properly.

TEMPERATURE SENSOR ELECTRICAL RATING

VOLTS	CONTINUOUS	INRUSH
	AMPERES	AMPERES
110-120	3.00	30.0
220-240	1.50	15.0
440-480	0.75	7.5

C-4.5 Moisture Sensors:

A normally open (N/O) detector is installed in the pump seal chamber, which will detect any moisture present, and a continuity test resistor built into the motor. The test resistor is rated 1 watt at 330K ohms. The moisture sensors MUST be connected to moisture detector control, which includes a continuity test circuit, see Fig. 3 for typical wiring diagram. The normally closed (N/C) contact of the moisture detector MUST be connected in series with the stop button of the pilot circuit of the magnetic motor controller. A Warrick moisture detection control, Type 2800 is an acceptable control if properly installed and maintained. Wiring must be provided from the moisture detector sensor probe leads of the motor designated W1 and W2 to terminals 9 and 10 of the 2800-XXX control. Terminal pair 1-2 must be continuously energized from an A-C supply line of electrical characteristics shown on the data table. In the event of moisture detection, the pump should be pulled and the source of the failure located and repaired. IF MOISTURE DETECTION HAS

OCCURRED, SCHEDULE MAINTENANCE AS SOON AS POSSIBLE!

C-4.6) Control Panel and Electrical System:

The control panel and the electrical system MUST be properly designed and wired to include at least, but not limited to the following;

a. Proper grounding per NEC.

b. A temperature sensing circuit (see Fig. 2A & B) c. A moisture detection circuit with continuity test

circuit (see Fig. 3)

d. An intrinsically safe level control system.

e. A main power manual disconnect and lock out.

f.A motor starter and overload system.

g.Single phase only, requires a capacitor power pack (see Fig. 2B).

Control panels for single phase pumps MUST be purchased from the factory and it is advisable that all three phase control panels are also purchased from the factory.

SECTION: D START-UP OPERATION

D-1) Check Voltage and Phase:

Before operating pump, compare the voltage and phase information stamped on the pump’s identification plate to the available power.

D-2) Check Pump Rotation:

Before putting pump into service for the first time, the motor rotation must be checked. Improper motor rotation can result in poor pump performance and can damage the motor and/or pump. To check the rotation, suspend the pump freely, momentarily apply power and observe the “kickback”. “Kickback” should always be in a counter-clockwise direction as viewed from the top of the pump motor housing.

D-2.1) Incorrect Rotation for Three-Phase Pumps:

In the event that the rotation is incorrect for a three-phase installation, interchange any two power cable leads at the control box. DO NOT change leads in the cable housing in the motor. Recheck the “kickback” rotation again by momentarily applying power.

D-2.3) Test Procedure For Moisture Sensor Control: With a Warrick moisture detection control, type 2800, a normally closed push button and neon indicating lamp is provided as a means of checking the moisture sensing components. When the push button is depressed, the indicating lamp will be illuminated to indicate (A) power is supplied to the control, (B) the control is operative, and (C) wiring to the moisture sensing probes in the motor is intact. This procedure should be performed periodically to confirm integrity of the circuit.

D-3) Start-Up Report:

Included at the end of this manual are two start-up report sheets, these sheets are to be completed as applicable. Return one copy to Barnes Pumps, Inc. and store the second in the control panel or with the pump manual if no control panel is used. It is important to record this data at initial start- up since it will be useful to refer to should servicing the pump be required in the future.

D-3.1) Identification Plate:

Record the numbers from the pump’s identification plate on both START-UP REPORTS provided at the end of the manual for future reference.

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