OPERATING AND MAINTENANCE MANUAL
Chapter 9 - Operation and maintenance
iC 215 ÷ iC 780
60
The data in this manual are not binding and they can be modified by the manufacturer without notice.
Reproduction of this manual is strictly prohibited
ENGLISH
EN
9 . 4
D r a i n i n g t h e p r o c e s s w a t e r c i r c u i t
This operation is essential when, with the unit stopped and without the anti-freeze heater, the temperature in the place of
installation may fall to the point at which the water in the unit could freeze.
To drain the exchangers proceed as follows:
For units with tank and finned core exchanger:
When a pump is installed use special caution to ensure it is emptied, draining off any water that has collected in the impeller.
iC 640÷660
iC 660÷780
After having emptied the hydraulic system open
the bleed and drain cocks and wait until all the
water in the storage tank is drained off.
After having emptied the hydraulic system open the drain cocks and the bleed cock and wait until all the water in the
storage tank is drained off.
D
B
C
F
A
B
D
B
C
F
A
B
Drain cock
Bleed cock