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USE

PENTAX

USE AND INSTALLATION INSTRUCTIONS OF THE PENTAX SUBMERSIBLE MOTOR-DRIVEN PU MPS

PENTAX's submersible pumps have a vertical axis and are mono-block single-impeller pumps designed to

PENTAX's submersible pumps have a vertical axis and are mono-block single-impeller pumps designed to work "submerged" in fixed

work "submerged" in fixed and mobile installations. They are suitable for pumping:

and mobile installations. They are suitable for pumping:

Pump type

Water type

DP 40 and 60

DP 80 and 100

DPV 80 and 100

DX 80 and 100

Clean/dirty

DG 80 and 100

Clean/dirty

DH 80 and 100

Clean/dirty

Pump type

DVT400/550

DV(T)150/200/300, DVT750/1000

DVT250-4/300-4/400-4, DVT550-4/750-4

DM(T)160/210/310

DMT550

DMT1000

DMT250-4/300-4/400-4

DMT550-4/750-4

DC(T)160/210/310, DCT410/560,

DCT750/1000

DTR(T)150/200/300

DTRT400/550

DTRT750/1000

All the machines are not suitable for pumping liquids with the features below:

• temperatures exceeding 40 °C, density greater than 1000 kg/m3 and kinematic viscosity greater

• temperatures exceeding 40 °C, density greater than 1000 kg/m

than 1 mm2/s (1 cSt);

• pH lower than 5 or greater than 8;

• chemically and mechanically aggressive substances for the materials of the pump;

• flammable and/or explosive substances;

• features other than those specified for each type of pump.

Not all the machines can be to be installed in pits, tanks or other areas containing gas and/or with explosion hazards:

The maximum depth of immersion (with appropriate cable length) is 5m for DP/DPV/DX/DG/DH, 20m for DV/DM/DC/DTR.

For continuous operation, in order to allow for proper cooling of the motor, the motor must be completely immersed in the liquid to be

For continuous operation, in order to allow for proper cooling of the motor, the motor must be completely immersed in

pumped (minimum depth of immersion).

the liquid to be pumped (minimum depth of immersion).

To avoid possible damage to the motor-driven pump, the number of equally distributed starts/per hour must be less than:

• 30, for the DP / DX / DG / DH series;

• 20, for motor-driven pumps with a rated power of up to 4 kW;

• 10, for motor-driven pumps with a rated power of up to 5.5-7.5 kW.

The sound pressure, measured in the minimum depth that allows the pump to operate, is less than 70 dB (A) when the

The sound pressure, measured in the minimum depth that allows the pump to operate, is less than 70 dB (A) when the pump is

pump is submerged the noise disappears.

submerged the noise disappears.

Installation

The internal diameter of the pipes depends on their length and the flow they need to deliver. To prevent possible obstruc-

The internal diameter of the pipes depends on their length and the flow they need to deliver. To prevent possible obstructions and

tions and blockages the speed of the liquid in the delivery pipe must greater than 0.8-1 m/s; in the presence of sand or

blockages the speed of the liquid in the delivery pipe must greater than 0.8-1 m/s; in the presence of sand or suspended particles, the

suspended particles, the speed must be of at least 1.6 m/s in horizontal pipes and 2.5 m/s in vertical ones: in any case

speed must be of at least 1.6 m/s in horizontal pipes and 2.5 m/s in vertical ones: in any case speed must not exceed the rate of 3.5-4

speed must not exceed the rate of 3.5-4 m/s. The delivery pipe should never have a diameter smaller than the diameter

m/s. The delivery pipe should never have a diameter smaller than the diameter of the outlet of the pump. To avoid sedimentation to

of the outlet of the pump. To avoid sedimentation to the stops of the pump, it is best to limit to a minimum the vertical

the stops of the pump, it is best to limit to a minimum the vertical sections of the delivery pipe and install the horizontal sections slightly

sections of the delivery pipe and install the horizontal sections slightly sloping in the direction of the flow.

sloping in the direction of the flow.

The pump must be lifted and transported using the appropriate eyebolt or handle and never using the power cord and/

The pump must be lifted and transported using the appropriate eyebolt or handle and never using the power cord and/or of float: if

or of float: if damaged, this may cause of a failure or more serious incidents. -Fig.1-

damaged, this may cause of a failure or more serious incidents. -Fig.1-

Place the pump, along its vertical axis, on the bottom of the pit or the installation site. Make sure that the pumped liquid

Place the pump, along its vertical axis, on the bottom of the pit or the installation site. Make sure that the pumped liquid does not

does not contain or does not generate explosive gas mixtures: always make sure that the collection tank (pit) is well

contain or does not generate explosive gas mixtures: always make sure that the collection tank (pit) is well ventilated and do not allow

ventilated and do not allow for gas stagnation.

for gas stagnation.

The size of the collection tank should allow:

• the available volume to limit the starts/per hour of the motor-driven pump: see maximum number

• the available volume to limit the starts/per hour of the motor-driven pump: see maximum number of start-ups allowed,

of start-ups allowed,

• when the motor-driven pump is not operating, it should not allow the formation of hard sediments.

Fixed installation -Fig.2-:

Fit a check valve on the delivery pipe, preferably in horizontal sections that are easy to access. To be able to remove the pump without

Fit a check valve on the delivery pipe, preferably in horizontal sections that are easy to access. To be able to remove the

draining the system, place a lock gate and a nozzle downstream of the valve, thus allowing for maintenance and cleaning of the valve.

pump without draining the system, place a lock gate and a nozzle downstream of the valve, thus allowing for mainte-

In order not to amplify the vibrations typical of any rotating machine, it would be best to have the resting base of the pump fixed firmly

nance and cleaning of the valve. In order not to amplify the vibrations typical of any rotating machine, it would be best

to the bottom of the tank; provide for anchoring devices and supports also for the delivery pipe. If the pump needs to operate in sandy

to have the resting base of the pump fixed firmly to the bottom of the tank; provide for anchoring devices and supports

and/or muddy conditions, it should be placed a stable base and in any case kept a certain distance from the bottom.

also for the delivery pipe. If the pump needs to operate in sandy and/or muddy conditions, it should be placed a stable

base and in any case kept a certain distance from the bottom.

AND

INSTALLATION

SUBMERSIBLE

Suspended solids

Quantity (%)

Clean

< 5

Clean

< 5

Clean

< 5

< 15

< 5

Admitted free

passage (mm)

INSTRUCTIONS

MOTOR-DRIVEN

Minimum suction Depth (mm) with

Size (mm)

< 4

< 7

< 15

< 28

< 35

< 10

Water type

With high solid content and long-fibre

solids, fluids containing high

concentrations of gases and sewage

Clear, liquids containing solids and

short-fibre solids, sewage, sludge

Clean or slightly dirty, with no fibres

and filamentous compounds

Wastewater containing fibrous or

filamentary solids which need to be

broken down. They must not contain

abrasive particles or material (e.g.

sand, gravel)

and kinematic viscosity greater than 1 mm

THE

PUMPS

manual operation

110

Impeller type

Recessed open

Vortex type

Closed single-

channel

Open single-channel

High-prevalence

open multi-channel

Open multichannel

and suction grinding

system

/s (1 cSt);

Fixed inst

For motor-

• secure

• instal

recomm

check v

• engag

and thre

• fix th

the cove

This is the

reposition

empty the

Portable i

Always fix

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use the ele

the top, on

designated

under load

against a s

The electr

voltage an

mains pow

and/or cab

end of the

attention s

to the cab

the junctio

The electri

closing ins

power sup

it may sud

15 minutes

the therma

motor-drive

• C= 35 µF

For single

starter cap

connected

The electri

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pumps, it i

operating c

contacts o

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Before ins

act on the

For three-p

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direction. W

the directio

motor-drive

driven pum

not cause

The size o

subject the

on the plag

immersed

without floa

Maintenan

Produits Connexes pour Pentax DM

Ce manuel est également adapté pour:

Dv Dc Dtr Dp Dpv Dx ... Afficher tout

Pentax DM Mode D'emploi page 7

Les langues disponibles

Manuels Connexes pour Pentax DM

Produits Connexes pour Pentax DM

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