15
English (US)
7. Product introduction
Grundfos CRN-H MAGdrive is a 100 % leakage-free, sealless
pump. The motor torque is transmitted to the pump shaft by
means of magnetic force.
The Grundfos CRN-H MAGdrive pumps are designed for
operation with the most common refrigerants in modern
refrigeration systems.
The approved refrigerants are as follows:
• R717 (NH3, ammonia),
• R134a
• R290
• R404A
• R407C
• R410A
• R507A
• R22.
R744 (CO2, carbon dioxide) is not an approved refrigerant for the
CRN-H MAGdrive pump.
Each pump is individually tested at the factory prior to shipment.
Main characteristics of the CRN-H MAGdrive pump design:
T
M
06
88
82
03
17
Rotating flange
design for easy bolt
hole alignment
The multistage hydraulics
are designed for operation
with refrigerants at
conditions close to the
boiling point. The first
stage has been oversized
to reduce the required
NPSH on two pole pump
models
Full motor program
featuring premium
efficiency Grundfos or
Baldor
®
motors
By pass connection
Modular design for
easy service: motor
and/or pump
cartridge can be
removed without
disturbing piping
316 stainless steel
pump casing
The pump inlet and outlet
incorporate connections for a
differential pressure transmitter. The
transmitter is used for variable
speed control and pump protection
Drain for removal of liquid
refrigerant and-or oil
ANSI - ASME
B73.1
piping dimensions.
ANSI 300# flanges
Summary of Contents for CRN-H MAGdrive
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