Pratissoli VFH Serie Manuel D'utilisation Et D'entretien page 24

Viscosity / Room Temperature diagram
mm /s = cSt
2
The used oil must be poured unto a suitable container and consigned to an authorised recycling centre.
Do not release used oil into the environment under any circumstances.
8 PORTS AND CONNECTIONS
The VFH series pumps (see Fig. 4) are equipped with:
 2 "IN" inlet ports 3/4" Gas.
Line connection to any of the two ports is indifferent for
proper pump functioning. The unused ports must be
hermetically closed.
 2 "OUT" outlet ports Ø 8 mm.
 2 service ports 1/2" Gas; they can be used for the pressure
gauge and the safety valve.
 1 drain port "DRAIN " supplied with an adjustable 90° rapid
fitting for extØ 10 mm polyamide pipes. It is needed to
recover the fluid drained from the packing cooling circuit,
and must be connected to the outlet port being careful to
avoid counter-pressure.
Ambient temp. (°C)
8.1
The VFH pumps are equipped with 4 conic steel pads to
be used in correspondence with the pump's delivery ports
(see Fig. 5) or in the optional fitting flanges. Their function is
to guarantee the sealing of the connection. The seat of the
pump's delivery port is already machined in order to hold the
conic pad; if necessary, the connections for the delivery fitting
or the closing plug must be specially machined as indicated in
Fig. 5/a.
PAD
Fig. 4
24
Conic sealing pads
At each disassembly, the conic pads must be
replaced.
PLUG
PUMP HEAD
Fig. 5
Fig. 5/a