3. Survey the existing plumbing and identify the suction line (i.e. the line going from the water hold-
ing tank to the pump). If there is not a screen-filter currently on this line, then one should be pro-
cured for the Aquajet installation (several brands are available at any local RV dealer). For the
quietest possible operation of the Aquajet ES, you should try to isolate the pump mechanically
from your RV's typically hard Polybutylene or PEX tubing. If your RV is currently plumbed with
soft-walled, reinforced hose (see Diagram 5), then your system should be perfectly sufficient as
is. By installing a piece of IAPMO approved cold water hose (such as 'Accuflex' Series 136)
between the pump outlet port and your RV's hard plumbing, you will achieve the quietest possi-
ble pump operation. Aquatec also offers, as an optional accessory, a 39" long pre-assembled
hose with fittings (Aquatec product number 25-174) that will adapt directly to the Aquajet ES and
your existing plumbing. Please refer to Diagrams 6 and 7 at the back of this User's Guide.
