Document Ref 903647-001 Rev 3
Page 2-7
Component Technical Manual
PAS V3 Pump for Fuel Dispensers
Together these flows, necessary for the functioning of the system, are about 8 l/
min. These flows are brought back to the pump inlet by the recovery float valve
[6].The specially designed recovery float valve maintains the liquid at a constant
level.
2.5.6
VENT TO ATMOSPHERE
A vent [8], located at the highest point on the cover, maintains the recovery
chamber at atmospheric pressure.
The gas that is extracted from the central channel of the vortex is released into
the atmosphere by this vent. According to some local regulations, a pipe or hose
must be connected to this vent.
A non-overflow device [7], made by a floating valve is put in the vent channel.
NOTE:- If this vent (internal thread R 3/8”) is connected to an
atmospheric pressure equalising pipe, the pipe has to have a minimum
internal diameter of 12mm.
2.5.7
DRAINING OF THE PAS
The PAS V3 is provided with a double drain [5] located at the lowest point of
the housing. The pump can easily be drained without spillage. Therefore the
following actions must be carried out:
•
open the filter box
•
remove the foot valve (to let the fuel go back to the tank underground)
•
unscrew the drain [5] and pull it one level down to empty the recovery chamber
[10] in the filter box
If the fuel can not go back to the tank underground (e.g. non-return valve in the
pipeline, ground tank higher than pump), the draining is still possible by unscrewing
the drain screw [5] completely and catch the fuel in a tank.
2.5.8
V-BELT TRANSMISSION
In the new range of dispensers, Quantium T range, the motor is fixed on the
PAS support which can be adjusted in order to get the right tension. A spring
roller (optional) is also available to get the correct tension.
For the Quantium T-range the following V-belts are used:
- For 80 l/min pumps (is with a SPA 95 pulley) the V-belt has Tokheim code
number 900028-004.
- For 130 l/min pumps (is with a SPA 71 pulley) the V-belt has Tokheim code
number 900028-005.
- For all other dispenser models check the code on the old V-belt before ordering,
different V-belts may be used.
Issue B
