DNR
Multi-channel open impeller
General characteristics
• Multi-channel open impeller
• 1,1 ÷ 4,1 kW motor power
• 2 / 4 / 6 poles
• DN65 ÷ DN150 delivery port
• 40 ÷ 100 mm free passage

Electromechanical assembly
Electromechanical assembly in GJL-250 cast iron, for submerged operation. Seal set comprising
2 (two) opposing silicon carbide mechanical seals in inspectable oil sump. Ecological dry motor.
Separate pump body. Series available in explosion-proof version
Applications
Designed for mainly professional and industrial use such as wastewater treatment plants,
sewage systems and livestock farms, it is particularly suitable for the treatment of liquids
containing suspended solids or filaments, and low or medium density activated sludges. The
pump is also available in explosion-proof version with ATEX certification. This series is prefitted
for installation of the ZENIT cooling system for dry or semi-submerged installation
Construction materials
Case Cast Iron EN-GJL 250
Impeller Cast iron EN-GJL-250
Nuts and bolts Stainless Steel - Class A2-70
Standard gasket Rubber - NBR
Shaft Stainless Steel - AISI 420
Cooling jacket Carbon Steel - Fe360 ÷ Fe370
Set of standard mechanical seals Two Silicon carbide mechanical seals (2SiC)
operating limits
Maximum operating temperature 40 °C
PH of treated fluid 6 to 10 pH
Viscosity of treated fluid 1 mm 2/s
Maximum immersion depth 20 m
Density of treated fluid 1 Kg/dm3
Maximum acoustic pressure 70 dB
max starts per hour 10










Cooling by means of process liquid
The rear of the impeller is specially shaped to convey some of the process liquid into the cavity between the body and the jacket to cool the motor. Once the cavity is full, the liquid is drawn into the pump body along a special pipe and then expelled.


Cable gland

Cable gland system to guarantee perfect water-tightness. The GAS thread ring-nut can be removed to fix a rigid or flexible duct to the cable gland to protect the power supply cable






 
Mechanical seals

Two mechanical seals in silicon carbide (2SiC)










 
Oil sump

Large oil sump to guarantee longer mechanical seal lifetime










 
Drive shaft

Impeller connected to the drive shaft by means of tapered coupling









 
Anti-clogging system

The special design of the hydraulic part ensures the expulsion of suspended solids and prevents fouling of the impeller








 
EX

Models available on request with ATEX certification, suitable for installation in the presence of potentially explosive gases, powders and liquids












Models with horizontal DN65 PN10-16 flanged delivery port - 2 poles

Preformances



 



Technical data
  V

Phases

P1 (kW)

P2 (kW) A Rpm Ø Cable (*) Free passage
① DRN 250/2/65 A1DM/50 230 1 2.8 1.8 12.5 2900 DN65 PN10-16 A - B 40 mm


  V

Phases

P1 (kW)

P2 (kW) A Rpm Ø Cable (*) Free passage
① DRN 250/2/65 A1DM/50 230 1 2.5 1.8 4.3 2900 DN65 PN10-16 A - B 40 mm
② DRN 300/2/65 A1DM/50 230 1 2.9 2.2 5.1 2900 DN65 PN10-16 A - B 40 mm


(*) A = 07RN-F 4G1.5+3x1 - 10 m (standard version). Electrical and mechanical features are equal to the cable H07RN-F B = NSSHOU-J  
4G1.5+2x0.75 - 10 m (ATEX version)



Models with horizontal DN65 PN10-16 flanged delivery port - 2 poles


Preformances

 

       



Technical data
  V

Phases

P1 (kW)

P2 (kW) A Rpm Ø Cable (*) Free passage
① DRN 400/2/65 A1FT/50 400 3 4.0 3 6.7 2900 DN65 PN10-16 A - B 50 mm
② DRN 550/2/65 A1FT/50 400 3 5.0 4.1 8.1 2900 DN65 PN10-16 A - B 50 mm


(*) A = 07RN-F 4G1.5+3x1 - 10 m (standard version). Electrical and mechanical features are equal to the cable H07RN-F B =
NSSHOU-J 4G1.5+2x0.75 - 10 m (ATEX version)




Models with horizontal DN65 PN10-16 flanged delivery port - 2 poles


Preformances



 



Technical data
  V

Phases

P1 (kW)

P2 (kW) A Rpm Ø Cable (*) Free passage
① DRN 250/2/65 A1DM/50 230 1 2.8 1.8 12.5 2900 DN65 PN10-16 A - B 40 mm


  V

Phases

P1 (kW)

P2 (kW) A Rpm Ø Cable (*) Free passage
① DRN 250/2/65 A1DM/50 230 1 2.5 1.8 4.3 2900 DN65 PN10-16 A - B 40 mm
② DRN 300/2/65 A1DM/50 230 1 2.9 2.2 5.1 2900 DN65 PN10-16 A - B 40 mm


(*) A = 07RN-F 4G1.5+3x1 - 10 m (standard version). Electrical and mechanical features are equal to the cable H07RN-F B = NSSHOU-J        
4G1.5+2x0.75 - 10 m (ATEX version)



Models with horizontal DN80 PN10-16 flanged delivery port - 2 poles


Preformances

 

       







Technical data

  V

Phases

P1 (kW)

P2 (kW) A Rpm Ø Cable (*) Free passage
① DRN 400/2/100 A1FT/50 400 3 4.0 3 6.7 2900 DN100 PN10-16 A - B 50 mm
② DRN 550/2/100 A1FT/50 400 3 5.0 4.1 8.7 2900 DN100 PN10-16 A - B 50 mm
(*) A = 07RN-F 4G1.5+3x1 - 10 m (standard version). Electrical and mechanical features are equal to the cable H07RN-F B =
NSSHOU-J 4G1.5+2x0.75 - 10 m (ATEX version)



Models with horizontal DN100 PN10-16 flanged delivery port - 2 poles


Preformances

 

       







Technical data

  V

Phases

P1 (kW)

P2 (kW) A Rpm Ø Cable (*) Free passage
① DRN 400/2/100 A1FT/50 400 3 4.0 3 6.7 2900 DN100 PN10-16 A - B 50 mm
② DRN 550/2/100 A1FT/50 400 3 5.0 4.1 8.7 2900 DN100 PN10-16 A - B 50 mm
(*) A = 07RN-F 4G1.5+3x1 - 10 m (standard version). Electrical and mechanical features are equal to the cable H07RN-F B =
NSSHOU-J 4G1.5+2x0.75 - 10 m (ATEX version)





Models with horizontal DN80 PN10-16 flanged delivery port - 4 poles


Preformances

 

       


Technical data

  V

Phases

P1 (kW)

P2 (kW) A Rpm Ø Cable (*) Free passage
① DRN 400/2/100 A1FT/50 400 3 2.0 1.5 4.1 1450 DN80 PN10-16 A - B 80 mm
② DRN 550/2/100 A1FT/50 400 3 2.9 2.2 5.8 1450 DN80 PN10-16 A - B 80 mm
③ DRN 550/2/100 A1FT/50 400 3 3.7 3 7.3 1450 DN80 PN10-16 A - B 80 mm
(*) A = 07RN-F 4G1.5+3x1 - 10 m (standard version). Electrical and mechanical features are equal to the cable H07RN-F B =
NSSHOU-J 4G1.5+2x0.75 - 10 m (ATEX version)





Models with horizontal DN100 PN10-16 flanged delivery port - 4 poles


Preformances

 

       


Technical data

  V

Phases

P1 (kW)

P2 (kW) A Rpm Ø Cable (*) Free passage
① DRN 400/2/100 A1FT/50 400 3 2.0 1.5 4.1 1450 DN100 PN10-16 A - B 80 mm
② DRN 400/2/100 A1FT/50 400 3 2.9 2.2 5.8 1450 DN100 PN10-16 A - B 80 mm
③ DRN 400/2/100 A1FT/50 400 3 3.7 3 7.3 1450 DN100 PN10-16 A - B 80 mm
(*) A = 07RN-F 4G1.5+3x1 - 10 m (standard version). Electrical and mechanical features are equal to the cable H07RN-F B =
NSSHOU-J 4G1.5+2x0.75 - 10 m (ATEX version)





Models with horizontal DN80 PN10-16 flanged delivery port - 6 poles


Preformances

 

       


Technical data

  V

Phases

P1 (kW)

P2 (kW) A Rpm Ø Cable (*) Free passage
① DRN 150/6/80 A1FT/50 400 3 1.6 1.1 3.7 960 DN80 PN10-16 A - B 80 mm
(*) A = 07RN-F 4G1.5+3x1 - 10 m (standard version). Electrical and mechanical features are equal to the cable H07RN-F B =
NSSHOU-J 4G1.5+2x0.75 - 10 m (ATEX version)





Models with horizontal DN100 PN10-16 flanged delivery port - 4 poles


Preformances

 

       


Technical data

  V

Phases

P1 (kW)

P2 (kW) A Rpm Ø Cable (*) Free passage
① DRN 400/2/100 A1FT/50 400 3 2.0 1.5 4.1 1450 DN100 PN10-16 A - B 80 mm
② DRN 400/2/100 A1FT/50 400 3 2.9 2.2 5.8 1450 DN100 PN10-16 A - B 80 mm
③ DRN 400/2/100 A1FT/50 400 3 3.7 3 7.3 1450 DN100 PN10-16 A - B 80 mm
(*) A = 07RN-F 4G1.5+3x1 - 10 m (standard version). Electrical and mechanical features are equal to the cable H07RN-F B =
NSSHOU-J 4G1.5+2x0.75 - 10 m (ATEX version)





Models with horizontal DN100 PN10-16 flanged delivery port - 6 poles


Preformances

 

       


Technical data

  V

Phases

P1 (kW)

P2 (kW) A Rpm Ø Cable (*) Free passage
① DRN 150/6/100 A1FT/50 400 3 1.6 1.1 3.7 960 DN100 PN10-16 A - B 80 mm
② DRN 250/6/100 A1FT/50 400 3 2.6 1.8 5.7 960 DN100 PN10-16 A - B 100 mm
(*) A = 07RN-F 4G1.5+3x1 - 10 m (standard version). Electrical and mechanical features are equal to the cable H07RN-F B =
NSSHOU-J 4G1.5+2x0.75 - 10 m (ATEX version)





Models with horizontal DN150 PN10-16 flanged delivery port - 6 poles


Preformances

 

       


Technical data

  V

Phases

P1 (kW)

P2 (kW) A Rpm Ø Cable (*) Free passage
① DRN 250/6/150 A1FT/50 400 3 2.6 1.8 5.7 960 DN150 PN10-16 A - B 100 mm
(*) A = 07RN-F 4G1.5+3x1 - 10 m (standard version). Electrical and mechanical features are equal to the cable H07RN-F B =
NSSHOU-J 4G1.5+2x0.75 - 10 m (ATEX version)



DNR
Versions available



 Electrical variants
 Cooling
Mechanical Seals


N
A
E




T



T
C


T
C
D

T
C
D
T
T
C
D
G
T


T
C
G

T
C
S
T
T
C
S
G
T



T
S



T
R


T
R
G



F
T

C
G
F
T


N


CC


2SIC


SICM


SICAL


2SICAL
DRN 250/2/65 A1DM/50
DRN 250/2/65 A1DT/50
DRN 300/2/65 A1DT/50
DRN 400/2/65 A1FT/50
DRN 550/2/65 A1FT/50
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
DRN 250/2/80 A1DM/50
DRN 250/2/80 A1DT/50
DRN 300/2/80 A1DT/50
DRN 400/2/80 A1FT/50
DRN 550/2/80 A1FT/50
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
DRN 400/2/100 A1FT/50
DRN 550/2/100 A1FT/50
*
*
*
*
*
*
*
*
*
*
DRN 200/4/80 A1DT/50
DRN 300/4/80 A1FT/50
DRN 400/4/80 A1FT/50
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
DRN 200/4/100 A1DT/50
DRN 300/4/100 A1FT/50
DRN 400/4/100 A1FT/50
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
DRN 150/6/80 A1DT/50
*
*
*
*
*
DRN 150/6/100 A1DT/50
DRN 250/6/100 A1FT/50
*
*
*
*
*
*
*
*
*
*
DRN 250/6/150 A1FT/50
*
*
*
*
*
NOTE: For single phase pumps thermal protections into the winding have to be connected to the electrical panel.
Start capacitor inside the pump. Circuit breaker supplied but not connected to the pump cable.
The use of an electrical panel as circuit breaker housing is mandatory. For installation please see use and maintenance instructions
booklet. The version complete with probe is not available with ATEX certificate.


Packaging dimension
   Overall dimensions and weights