C.R.I PUMPS

MOTOR SUBMERSIBLE

Motor pompa submersible merek terkenal seperti CRI, SUMOTO, AQUISTAR dan lainnya dengan kualitas terjamin serta service yang memuaskan.

SUBMERSIBLE MOTOR

‘L’ Series Motors

These oil filled motors are one among the proven & successful products from the house of C.R.I. These motors are developed with due diligence complying with all safety standards and giving importance to the customers need. All the components that are in contact with water are made of AISI 304 stainless steel and the motor is pre-filled with edible grade oil, which acts as coolant as well as lubricant and heat dissipation  media. The freezing point of the oil used - 10°C.

Dynamically balanced rotors equipped with quality ball bearings maintain uniform clearance, thereby giving better efficiency and increase the life cycle. Ball bearings are used to withstand the high axial load and the lower ball bearings are of angular contact type. The shaft extension is made of 300 series stainless steel to avoid splines worn-out.

High quality carbon/ceramic mechanical seal and oil seal made of Nitrile rubber are used to ensure better sealing system. Pressure equalizing rubber diaphragm is provided to balance the pressure and volume variations due to thermal expansion of the oil inside the motor. Motor sealings are made by means of ‘O’ rings. Shaft seals and sand guard prevents ingress of well water, sand and fiber particles into the motor. Care should be taken to ensure that the motor does not run when it is not submerged in the water. To prevent the motor from dry running, install water level monitor/dry run preventor. The motor needs a constant flow of water passed over it’s body to keep it at correct operating temperature. Ideally the motors should be set just above the final yield point of bore well and when the level is not ascertained, fit a “flow inducer pipe” over the pumpset to ensure adequate cooling. It is mandatory to use C.R.I. Control boxes for all motors with adequate protection & control systems. Mounting dimensions of these motors are in accordance with NEMA standard.

FEATURES

  • High operating efficiency and lesser power consumption
  • Extremely hard wearing ball & angular contact bearings
  • Filled with edible grade oil
  • Can be easily dismantled and repaired

APPLICATIONS

These prime mover submersible motors are suitable to couple with deepwell submersible pump ends used for :

  • Irrigation
  • Fountains
  • Gardens
  • Domestic water supply
  • Industrial water supply
  • Sprinkler systems
  • Pressure boosting units
  • Pounds
  • Mining & CBM (coal bed methane)

 

Material of Construction

Part Name

Type – A

Housing Shell

SS 304

Stator Shell

SS – 304

Bearings

Uper : Ball Bearing

 

Lower : Angular contact ball

               Bearing (upto 3 kW – 1 No.)

               & from 3.7 kW – 2 No.s

Shaft

17 – 14 PH

Lip Seal / Oil Seal

Nitrile Rubber (NBR)

Mechanical seal

Carbon / Ceramic

Diaphragm

Nitrile Rubber (NBR)

 

Specification
Nominal Diameter : 4”

Nominal Dia

4” (100mm)

Power range

0.37 kW to 2.2 kW Single Phase

0.37 kW to 7.5 kW Three Phase

Speed

2900 rpm

Version

Single Phase 230 V, 50 Hz, A.C Supply

Three Phase 400 V, 50 Hz, A.C Supply

Class of Insulation

F

Degree of Protection

IP 68

Direction of Rotation

CCW – Single Phase

Electrically Reversible – Three Phase

Type of Duty

S1 (Continuous)

Down Thrust Load

3000 N (0.37 to 1.1 kW)

4000 N (1.5 to 3.0 kW)

6500 N (3.7 to 7.5 kW)

Minimum cooling flow along the motor

0.15 m/sec

Maximum liquid temperature

33°C

Maximum immersion depth

150 m

Starts per hour

20

Shaft

Splined as per NEMA standard

Mounting Standard

NEMA Standard

Method of starting

Single Phase : Permanent Split Capacitor (PSC)

Three Phase : Direct on Line (DOL)

Cable Lead out

3 wire removable type EPDM rubber flat cable