Cooling Water Piping - EBARA ESA70W 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
In the case of removing the coupler, at first close the valve of cooling water
WARNING
supply line and next remove the coupler from the cooling water supply.
In the case of connecting the coupler , connect it with the cooling water return
(ret. outline drawing).
If the above is neglected, pressure in the cooling water piping rises rapidly and
there is a possibility to cause the water leak.
Even when the cooling water flow rate drops, the pump will continue to operate for
CAUTION
5 minutes.
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.
(ppm) 20
6.5-8.0
(ppm) 75
(ppm) 120
(ppm) 250
(ppm) 80
(ppm) 0.3
(ppm) 0.2
Correct
Wrong
Socket
Sleeve
Fig.4.2 Coupler
EBARA
(15)
In / Out
Marking
Plug
Corporation