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WATER COOLING KIT INSTALLATION
The water cooling kit mod. 969-9347 or 969-9337
must be installed when the pump is used under
heavy load conditions or when air cooling is insuffi-
cient.
Model 969-9337
Model 969-9347
The kit is assembled as shown in the figure.
Two rubber or plastic hoses from the water supply
must be fitted to the two water cooling banjos.
Cooling may be carried out either through an open
circuit with eventual discharge of the water, or us-
ing a closed circuit cooling system.
The water temperature must be between +10°C
and +30°C, with an inlet pressure between 3 and 5
bar. This allows a flow of about 200 l/h.
The water electrical conductance must be
µ
s/cm. When the conductance is higher, in closed
water circuit, the use of up to 20% of Ethyl-Glycole
is suggested.
VENT ACCESSORIES
The vent valve and vent device allow to avoid un-
desired venting of the pump during temporary
power failure and enables an automatic vent
operation.
TV 551/701 Navigator Controller Compatible
Vent Valve mod. 969-9834
This vent valve waits before opening a minimum
time of about 5 sec. This time can be increased up
to about 220 min. by means of a setting of the
Navigator software (optional).
To install the vent valve, unscrew the threaded
plug (see figure below).
40
TECHNICAL INFORMATION
NOTE
≤
87-900-934-01(B)
500
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