Purge Valve Installation - Agilent Technologies TV 401 NSF Manual

!
CAUTION
The items of the plastic model kit must be assem-
bled as shown in the following figure
The assembled kit must be screwed into the suit-
able holes of the pump body with a recommended
closing torque of 5 Nm.
The metallic model is assembled as shown in the
figure.
Two 6 mm (1/4") internal diameter rubber or plastic
hoses from the water supply must be fitted to the
two nozzles.
NOTE
These hoses must be held on the respective noz-
zles using hose clips to avoid that the tube(s) gets
loose or disconnected during operation.
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.

PURGE VALVE INSTALLATION

A gas purge valve is available to protect the pump
bearings against particulate and corrosive gases
that could move into the pump(see "Accessories
and Spare Parts" table).
To install the gas purge valve it is necessary to
unscrew the purge port cover as shown in the fol-
lowing figure,
and then screw the gas purge valve (with a torque
of 2.5 Nm) as shown in the following figure.
83/94
TECHNICAL INFORMATION
NOTE
≤
87-900-995-01(B)
500