Grundfos DP 10.50 Original Installation And Operating Instructions Download Page 10

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The supply voltage and frequency are marked on the
pump nameplate. For voltage tolerance, see section

. Make sure that the motor is

suitable for the power supply available at the
installation site.

All pumps are supplied with 10 metres of cable and
a free cable end.

9.1 CIU unit (communication interface)

The Grundfos CIU unit (CIU = Communication
Interface Unit) is used as a communication interface
between a DP or EF pump and a main network.

The CIU unit is optional. See separate installation
and operating instructions supplied with the unit.

9.2 Electrical connection –

single-phase pumps

The pump has a patented start function which
eliminates the need of a starting capacitor. The
operating capacitor is incorporated in the pump.

Fig. 5

Wiring diagram for single-phase pumps

9.3 Electrical connection –

three-phase pumps

The pump motor is designed so that the phase
sequence in the electrical panel is clockwise (can be
determined with a phase sequence detector).
The pump does not start unless the phase sequence
is correct.

If the dry-running sensors are covered by liquid, and
the pump does not start, the cause may be a wrong
phase sequence. Interchange L1 and L2.

Fig. 6

Wiring diagram for three-phase pumps

9.4 Alarm relay/communication connection

The pump incorporates an alarm relay output.
NC and NO are available and can be used as
required, for example for acoustic or visual alarms.

Alternatively, the wires 4 and 6 can be used for
external communication via a CIU unit
(communication interface).

See example of wiring diagram in the documentation
supplied with the CIU unit.

Warning

Before installation and the first start-up
of the pump, check the cable for visible
defects to avoid short-circuits.

Warning

The pump must not run dry.

Caution

A possible replacement of the cable
must be carried out by Grundfos or
an authorised service workshop.

297

209

2 A 230 VAC

Note

If a CIU unit is connected, the relay
must not be used. The CIU unit
incorporates a relay which takes over
the alarm function.

2 A 230 VAC

Summary of Contents for DP 10.50

Page 1: ...g the shaft seal 22 12 8 Oil change 23 12 9 Service kits 24 12 10 Built in protection 25 12 11 Contaminated pumps 25 13 Fault finding chart 26 13 1 Megging 26 14 Technical data 27 14 1 Supply voltage 27 14 2 Enclosure class 27 14 3 Ex protection 27 14 4 Insulation class 27 14 5 Pump curves 27 14 6 Sound pressure level 27 15 Disposal 27 1 Symbols used in this document 2 General description The elec...

Page 2: ...t pumps The pumps are designed for free standing installation DP 10 65 26 pumps can be installed on an auto coupling system Fig 1 DP 10 50 pump Fig 2 DP 10 65 pump Fig 3 EF 30 50 pump Explanation to figures 1 2 and 3 Warning Special conditions for safe use of DP and EF explosion proof pumps Bolts used for replacement must be class A2 70 or better according to EN ISO 3506 1 The thermal switch in th...

Page 3: ...ly S1 See section 11 2 Operating modes The EF pumps are suitable for pumping effluent and other liquids with solids up to 30 mm 3 1 Installation depth Maximum 10 metres below liquid level 3 2 Operating pressure Maximum 6 bar 3 3 Operation Maximum number of starts per hour see WebCAPS on www grundfos com 3 4 pH value Pumps in permanent installations can be used for pumping liquids with a pH value b...

Page 4: ...d European standard Ex The equipment conforms to the harmonised European standard b Control of ignition sources according to EN 13463 6 2005 c Constructional safety according to EN 13463 5 2003 and EN 13463 1 2009 d Flame proof enclosure according to EN 60079 1 2007 II Suitable for use in explosive atmospheres not mines B Classification of gases according to EN 60079 0 2006 Annex A Gas group B inc...

Page 5: ...ade in Hungary 96770195 2 3 4 5 6 7 8 9 10 11 12 13 14 15 17 18 19 20 21 22 23 24 25 1 16 26 Pos Description Pos Description Pos Description 1 Version 10 Number of phases 19 Maximum liquid temperature 2 Type designation 11 Rated input power 20 Output power 3 Product number 12 Rated speed 21 Power factor 4 Ex mark 13 Rated voltage 22 Rated current 5 ATEX certificate 14 Weight without cable 23 Opera...

Page 6: ...wastewater pumps Ex The pump is designed according to the ATEX standard stated or Australian standard AS 2430 1 Number of poles 2 poles n 3000 min 1 50 Hz Number of phases 1 Single phase motor Blank Three phase motor Mains frequency 5 50 Hz Voltage and starting method 02 230 V direct on line starting 0B 400 415 V direct on line starting Generation Blank 1st generation A 2nd generation B 3rd genera...

Page 7: ...hamber See section 12 Maintenance and service The pumps are suitable for different installation types which are described in sections 8 1 and 8 2 The pump housings have an Rp 2 discharge port or a DN 65 PN 10 flange Warning The use of this product requires experience with and knowledge of the product Persons with reduced physical sensory or mental capabilities must not use this product unless they...

Page 8: ...automatically connect tightly 8 Hang up the end of the chain on a suitable hook at the top of the tank and in such a way that the chain cannot come into contact with the pump housing 9 Adjust the length of the motor cable by coiling it up on a relief fitting to ensure that the cable is not damaged during operation Fasten the relief fitting to a suitable hook at the top of the tank Make sure that t...

Page 9: ...p is hanging from the chain and not the cable 3 Hang up the end of the chain on a suitable hook at the top of the tank and in such a way that the chain cannot come into contact with the pump housing 4 Adjust the length of the motor cable by coiling it up on a relief fitting to ensure that the cable is not damaged during operation Fasten the relief fitting to a suitable hook Make sure that the cabl...

Page 10: ...e can be determined with a phase sequence detector The pump does not start unless the phase sequence is correct If the dry running sensors are covered by liquid and the pump does not start the cause may be a wrong phase sequence Interchange L1 and L2 Fig 6 Wiring diagram for three phase pumps 9 4 Alarm relay communication connection The pump incorporates an alarm relay output NC and NO are availab...

Page 11: ...vel See examples below Example 1 Constant barometric pressure The pump will start when the liquid level in the tank has reached the set start level Then the pump will run until the liquid level reaches the stop level When it stops the pump will calibrate itself in relation to the actual barometric pressure See fig 8 Fig 8 Example 1 Constant barometric pressure Example 2 Rising barometric pressure ...

Page 12: ... pump incorporates dry running protection based on two dry running sensors placed on either side of the unit If a dry running sensor detects water shortage the pump will stop immediately and cannot restart until the sensors are fully submerged again The sensors must be cleaned at regular intervals depending on the deposits of sludge on the sensors in the tank Note When a thermal switch is activate...

Page 13: ...s not start with a wrong phase sequence and consequently wrong direction of rotation If the pump does not run and the liquid level is above the dry running sensors interchange L1 and L2 Fig 14 Jerk direction 11 4 Resetting the pump To reset the pump switch off the power supply to the pump for 1 minute and switch it on again 12 Maintenance and service Before carrying out maintenance and service it ...

Page 14: ...ection 12 9 Service kits Ball bearings Check the shaft for noisy or heavy operation turn the shaft by hand Replace defective ball bearings A general overhaul of the pump is usually required in case of defective ball bearings or poor motor function This work must be carried out by Grundfos or an authorised service workshop Warning When slackening the screws of the oil chamber note that pressure may...

Page 15: ... the motor part 3 Clean the pump housing and the impeller Assembly 1 Place the motor part with impeller in the pump housing 2 Fit and tighten the clamp See also section 12 7 Checking replacing the shaft seal 12 6 Cleaning the sensors Fig 16 Position of level and dry running sensors Proceed as follows See fig 16 1 Level sensor pos 7 Flush the sensor with clean water Dry running sensors pos 10 Flush...

Page 16: ...ng hours or at least once a year change the oil in the oil chamber as described below If the shaft seal has been changed the oil must be changed as well See section 12 7 Checking replacing the shaft seal Draining of oil 1 Slacken and remove both oil screws to allow all the oil to drain from the chamber 2 Check the oil for water and impurities If the shaft seal has been removed the oil will give a ...

Page 17: ...5 96115103 DP 10 50 09 96115104 DP 10 50 15 96115105 DP 10 65 26 96115106 Oil 1 litre of oil type Shell Ondina 917 See section 12 Maintenance and service for required quantity in oil chamber All types 96076171 Lifting bracket Lifting bracket and screw 0 6 1 5 kW 96984147 2 6 kW 96984148 Power plug Plug for power supply and O rings for cover All types 96984144 Protective cap for level sensor Protec...

Page 18: ...ut the pumped liquid etc before the pump is returned for service Otherwise Grundfos can refuse to accept the pump for service Possible costs of returning the pump are paid by the customer However any application for service no matter to whom it may be made must include details about the pumped liquid if the pump has been used for liquids which are injurious to health or toxic Before a pump is retu...

Page 19: ...installation and the submersible drop cable d Supply failure short circuit fault in cable or motor winding Have the cable and motor checked and repaired by a qualified electrician e Fault in motor electronics Have the motor checked and repaired by a Grundfos service engineer f Deposits on level or dry running sensors Clean the sensor s 2 The pump operates but the motor stops after a short while a ...

Page 20: ...m The curves are to be considered as a guide They must not be used as guarantee curves Test curves for the supplied pump are available on request 14 6 Sound pressure level The sound pressure level of the pumps is lower than the limiting values stated in the EC Council Directive 98 37 EC relating to machinery 15 Disposal This product or parts of it must be disposed of in an environmentally sound wa...

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Grundfos DP 10.50, Original Installation And Operating Instructions

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