Viking ESFR Service Manual download pdf (Page 38)

An arrow on the pump indicates the correct direction of rotation. If the pump

rotates in the opposite direction, reverse the rotation of the motor. Interchanging

any two incoming 3-phase supply wires reverses rotation of three phase motors.

WARNING: Operating the pump in the wrong direction may damage the pump.

Verify pump rotation is correct before placing the unit in service. Make sure there

is liquid on the suction side of the pump before checking rotation.

Connect system inputs to the proper terminals in the CS-1 control enclosure.

Each system pressure switch and alarm flow switch are connected as shown on

the electrical schematic.

NOTE: All system inputs must be connected before operating the unit. System

valves will not respond unless the system pressure switch and flow alarm switch

are connected correctly.

7.6 Start-Up

The following points must be verified before putting the unit into service. Correct

any discrepancies before operating the unit.

1. The unit is bolted to a firm level surface.

2. Area temperature will always remain between 40 °F and 100 °F (4 and °C).

3. Dielectric unions, if needed, are installed between the pump station piping

and system piping.

4. All piping to and from the pump station is independently supported and does

not place any strain on the unit’s piping.

5. Power supplied to the unit is appropriate (refer to Figure 1 on page 51 d).

5. Pump rotation has been checked and is correct.

6. System inputs are connected according to the electrical schematic.

7. Air can be vented from the system when filling with antifreeze.

8.0 PRESSURE SWITCH

8.1 System Control Switch

The pressure sensor detects the system pressure,

shows the current system pressure on its display and

generates one output signal according to the set output

configuration.

Operating Modes

Run mode: (Normal operating mode)

When the supply voltage has been applied, the unit is in the Run mode. It

monitors and switches the output according to the set parameters. The display

shows the current system pressure. The red LED indicates the switching state of

the output.

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Viking ESFR Service Manual Page 38