Velocity Edge MX120 Manual de instrucciones descargar pdf (Pagina 3)

4.1 Vertical pumps

4.1.1 Installation

Take notice of enough bottom clearance at the

suction side of vertical pumps.

See recommendations for bottom clearance.

Hendor vertical pumps are designed for

in-tank installation.

Out-of-tank models are optional and require

special installation instructions.

1 maximum liquid level

2 normal working level

3 minimal starting level

4 pump A stops pumping

5 pump B will continue to work

(provided it is not switched off intermittently)

6 pump B stops pumping

4.1.2 Operation and maintenance

These type of pumps are capable of running dry. At start up the pump should be checked for direction of rotation outside the liquid.

Contaminated strainers if mounted can reduce performance and should be cleaned regularly.

Regular pump inspection

During operation all pumps should be checked regularly. Check ow, pressure, manometer indication, pipe work, hoses, hose clamps

and absorbed power by monitoring amperage of the motor. Pumps should be tted with thermal overload switch. Check pumps for any

unusual noise or vibration (this may indicate the moment of maintenance).

Maintenance precautions

To avoid dangerous or fatal electric shock hazard and to avoid injury from starting the motor unexpectedly, disconnect and lock

out power supply to the motor. Always use genuine parts to assure good performance. When taking pump apart check for

sequence of disassembly and reassembly. After having completed maintenance or repair, follow safety and installation

instructions.

4.1.3 Dismantling and reassembly

For efcient maintenance of Hendor vertical pumps, some special tools are available (see page 4).

General precautions prior to dismantling

- always disconnect electric cables.

- disconnect discharge pipe.

- watch remaining liquid in pump housing.

- do work on a clean bench.

When ordering Hendor parts always quote pump type and serial number.

Dismantling

- remove drip cover (if applicable).

- remove fan cover.

- remove cooling fan by applying two screwdrivers.

- remove sealing ring and locking ring.

- turn pump upside down.

- remove volute cover (by turning clockwise).

- secure shaft end against rotation and loosen impeller (turning anti-clockwise) by using impeller key.

Series D90

- take off wiring casing of motor by removing 3 bolts; mind not to damage stator wiring!

- unscrew 4 screws that are accessible for removing pump house

- take off pump house

- loosen shaft protection pipe (turning anti-clockwise)

Other series

- remove bolts/nuts that connect motor to pump housing.

- take off pump housing completely.

- loosen impeller-shaft protection pipe (if applicable).

100

120

0 5000 10000 15000 20000 25000 30000 35000 40000 45000 50000 55000 60000

minimum bottom distance vertical pumps

Capacity in l/h

Distance in mm

D200

D170

D110 / D120

D90

Immersion

length

(mm)

Suction

extension

max.

min.

1 2 3 4 5 6 7 8 ... 19 20

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Velocity Edge MX120 Manual de instrucciones Pagina 3

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