Cooling Water Piping - EBARA ESA25-D Instruction Manual

4.2.2 Cooling Water Piping

Be sure to connect the cooling water pipes to the correct inlet and outlet ports.
The connector ports are provided with couplers. Push in the plug till the end of
socket. Socket sleeve returns to front. (Fig. 4.2)
Be sure that the supply/return plugs are not connected in reverse. The diameters
are slightly different. In/Out markings are provided on each plugs.
When the coupler is pulled out the water pipe will be automatically blocked. Use
cooling water corresponding to the specifications of Table 4.1 below.
Table 4.1 Industrial Water Supply Quality Specification
(Japan Industrial Water Association, Industrial
Water Quality Standards Committee)
Turbidity
pH
Alkalinity(CaCO3)
Hardness(CaCO3)
Evaporation residue
Chlorine ion
Iron
Manganese
CAUTION Even when the cooling water flow rate drops, the pump will
CAUTION When several pumps are used, be sure to connect the cooling
PM10U
(ppm)
6.5-8.0
(ppm)
(ppm)
(ppm)
(ppm)
(ppm)
(ppm)
continue to operate until the pump part reach a temperature
corresponding to the safety limit.
The material selected for the water piping of facility side
should have a heat resistance so that it can withstand a
maximum temperature of at least 70 ℃ at the operating
pressure.
water pipes to each pump in parallel. The cooling water will
flow more or less easily according to the type of pump and the
piping. Be sure to select the correct piping so as to ensure
the appropriate cooling water flow rate for all pipes used.
20
Correct
75
120
Wrong
250
80
0.3
0.2
Socket
Fig.4.2 Coupler
P.17
In / Out
Marking
Plug
Sleeve
EBARA
CORPORATION