Hydraulic Parts; Strainer And Filter; Strainer; Filter - Wayne Dresser Vista 1 Series Service Manual

The following section describes the operation of those hydraulic parts in Wayne dispensers which
perform some "act". Simple flow tubes will not be discussed.
There are three basic hydraulic parts in Wayne dispensers as follows:

• Strainer and Filter

• Two stage Solenoid Valve (Non-Blenders only)
• Proportional Flow Control Valve (Blender only)
• Meter
5.1. STRAINER AND FILTER
The strainer and filter are mentioned in this document only because they may cause the
dispenser to deliver slowly. In some cases this may appear to be a service problem. In
reality the filter should be changed and the strainer cleaned on a regular basis.
Before removing the strainer or filter assembly, trip the impact valve and turn OFF the
circuit breaker for the associated submersible pump.
5.1.1.

Strainer

If the underground installation is new, it may be necessary to clean the strainer
screen two or three times the first few days of operation to remove debris and
pipe dope. After this, occasional cleaning of the strainer is all that should be
required. The fuel filter should be changed whenever the strainer is cleaned.
The strainer is removed for cleaning by unfastening the cap. Place a container
under the cap to catch the product and sediment. Wash the screen in gasoline
and dislodge lint and other foreign particles with compressed air. Check for
leakage after reinstalling.
5.1.2.

Filter

Like the strainer, in new installations it may be necessary to change the filter
frequently in the first few days of operation in order to ensure proper opera-
tion.The fuel filter is removed the same way an oil filter is removed from a car
engine. Place a container under the filter to catch the fuel. To install the new
filter, first apply a film of oil to the gasket and hand turn until the gasket contacts
the base. Then tighten one half turn. Open the emergency shear valve, turn the
submersible circuit breaker ON and check for leaks.
February 1997

5. HYDRAULIC PARTS

Part No. 920160 Rev A
29