Grundfos CR 90 - User Manual

CR, CRI, CRN
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

Grundfos CR 90 Specifications

General

Model	CR 90
Frequency	50/60 Hz
Type	Centrifugal Pump
Power	0.75 - 11 kW
Material	stainless steel
Liquid temperature	+120 °C
Power Consumption	0.75 - 11 kW

Summary

Handling

Type Designation

Technical Data

Liquid Temperature

Maximum Permissible Operating Pressure and Liquid Temperature for the Shaft Seal

Minimum Inlet Pressure

Minimum Flow Rate

Installation

Installation Procedures

Step-by-step guide for installing the pump, covering foundation, piping, and safety measures.

Foundation

Foundation, Horizontal Mounting

Details dimensions and requirements for horizontal pump mounting foundations.

Vibration Dampening

Torques

Flange Forces and Torques

Force Limits for CR Cast-Iron Pump Housing

Specifies maximum permissible forces in Y, Z, and X directions for CR cast-iron pump housings.

Torque Limits to CR Cast-Iron Pump Housing

Lists maximum permissible torques in Y, Z, and X directions for CR cast-iron pump housings.

Force Limits for CRI, CRN Stainless-Steel Pumps Housing

Specifies maximum permissible forces for CRI, CRN stainless-steel pump housings.

Torque Limits to CRI, CRN Stainless Steel Pump Housing

Lists maximum permissible torques for CRI, CRN stainless steel pump housings.

Electrical Connection

Single-Phase Connection

Terminal Box Positions

Frequency Converter Operation

General Conditions

Phase Insulation, MG 71 and 80

Startup

Maintenance

Motor Bearings

Frost Protection

Service

Fault Finding

Disposing of the Product