Edwards nEXT200200 - Cooling Water; Electrical Data

Purge gas specic
aon Reference data
Maximum concentraon of oil 0.1 parts per million
Permied purge gas ow (when necessary)
20 to 50 sccm (0.33 to 0.84 mbar l s
-1
or
33 t
o 84 Pa l s
-1
)
Recommended purge gas o
w
25 sccm (0.42 mbar l s
-1
, 42 P
a l s
-1
)
Maximum permied supply pressure of
the purge gas
1 bar (gauge), 14.5 psig, 2 x 10
5
P
a
3.5 Cooling water
R
efer to Table: Cooling water specicaon on page 24 for the cooling water
specicaon. The cooling water supply must be a high‑quality drinking water
specicaon. Check with the water supply authority if there is doubt about the quality
of the supply.
Table 7
Cooling water specicaon
Cooling water specicaon Reference data
Quality
Mechanically clean and opcally clear
with no deposits or turbidity
pH value 6.0 to 8.0
Maximum calcium carbonate
concentraon
75 parts per million
Maximum chloride concentraon 100 parts per million
Minimum oxygen concentraon 4 parts per million
Minimum cooling water ow rate (at
15 °C)
15 l hr
-1
Water temperature 10 to 20 °C
Maximum water pressure
5 bar (gauge), 73.5 psig, 6 x 10
5
P
a
Materials exposed to the cooling water Nickel plated brass
3.6 Electrical data
The pump
s can be operated by the customers system or by the manufacturer's TIC Turbo
Instrument Controller or TIC Turbo Controller.
If using the customer system, the size of the power supply depends on the applicaon.
The rate of increase in the pump speed is dependent on the power limit seng. The
power limit seng overrides the necessary power supply seng. If the serial
communicaons or an access to the manufacturer's TIC is available, the power limit
seng of the pump can be selected. Refer to Table: Logic interface technical data on
page 27 for the maximum power limit sengs for the pumps. If the rapid cycling of the
pump is necessary for an applicaon, you can get the faster rate of increase in the pump
speed if the power supply supplies higher current, up to a maximum in accordance with
Table: Logic interface technical data on page 27.
Page 24
B85200880_D - Technical data