Edwards nXR30i User Manual

2. General descripon
2.1 Ov
erview
WARNING: INCORRECT USE OF EQUIPMENT
Risk of injur
y or damage to the equipment. Incorrect use of the equipment can cause
damage to the equipment or injury to people. The user is responsible for the safe
operaon, installaon and monitoring of the system.
CAUTION: GAS BALLAST INSTALLATION
Risk of damage to the equipment. If water vapor is present within the system, or is
pumped by the product the gas ballast must be used to prevent damage to the
product. The gas ballast should connue to be applied with the pump running, for at
least 1 hour aer the water vapor source has been removed to enable the pump to
dry.
The nXRi product family is a range of dry, mul-s
tage roots vacuum pumps that oers
high pumping speed in a compact form. The pump is connected by a power cord and is
designed for use on clean duty applicaons.
The cord rangs are:
Supply voltage (V)
Current (A) Frequency (Hz)
100 ‑ 127 14
50 or 60
200 ‑ 240 7
The pump is not designed for use with ammable, c
orrosive, toxic or other hazardous
gases. Gas or oxygen can mix in the pump system.
The dry pumping system can be used in either transient or steady state gas load
condions. The pump can sustain connuous operaon with a maximum power
consumpon of 850 W. When the load is more than 850 W motor power the speed
temporarily reduces.When high load passes the motor speed is increased, or when the
transient overload protecon has recovered. Refer to Table: Performance data for
informaon on maximum inlet pressure.
Refer to Figure: nXRi pumps, the system is supplied with either a NW25, NW40 inlet port
(1) and a NW25 exhaust port (10).
The pump mechanism is operated by an electric motor driven by an internal pump
controller. The rotaonal elements of the pumping mechanism are simply supported at
the end by lubricated bearings. PFPE lubricant is used and this is contained in both the
gearbox and motor ends of the pump module, these are "sealed for life" and the
lubricant does not need to be replaced unl the pump service interval is reached.
The system is air cooled by a fan installed internally in the pump enclosure. The pump
has a thermal protecon device that will stop the motor if a thermal overload, for
example in high ambient temperature occurs. You must restart the pump aer the pump
is cooled down.
05/2021 - ©Edwards Limited
Page 8A90301880_C
A90301880_C - General descripon

Edwards nXR30i Specifications

General

Brand	Edwards
Model	nXR30i
Category	Water Pump
Language	English