VERDER VERDERAIR VA-E50, Operation

Page: 14 / 44

Installation
Air Line
Models that Include a Compressor:
An air line is already connected from the compressor
to the pump air inlet.
Using Your Own Compressor:
Install a grounded, flexible air hose from the
compressor to the pump air inlet (E).
Using Shop Air:
1. Install an air filter/regulator assembly (H). The
fluid stall pressure will be the same as the setting
ofthe air regulator. The filter removes harmful
dirt and moisture from the compressed air supply.
2. Locate a bleed-type master air valve (G) close to
the pump and use it to relieve trapped air. Be
sure the valve is easily accessible from the pump
and located downstream from the regulator.
Trapped air can cause the pump to cycle
unexpectedly, which could result in serious
injury from splashing.
3. Locate another master air valve (J) upstream
from all air line accessories and use it to isolate
them during cleaning and repair.
4. Install a grounded, flexible air hose (F) between
the accessories and the pump air inlet.
Fluid Supply Line
1. Connect a grounded, flexible fluid hose (K) to
the fluid inlet port. The port on pumps with
aluminum, stainless steel, or cast iron fluid
sections is 2 in npt(f) or 2 in. bspt. On pumps
with polypropylene, conductive polypropylene,
or PVDF fluid sections, the port is a 2 in. raised
face ANSI/DIN flange.
2. Ifthe inlet fluid pressure to the pump is more
than 25% ofthe outlet working pressure, the ball
check valves will not close fast enough, resulting
in inefficient pump operation. Excessive inlet
fluid pressure also will shorten diaphragm life.
Approximately 0.21–0.34 bar (0.02–0.03 MPa,
3–5 psi) should be adequate for most materials.
3. For maximum suction lift (wet and dry), see
Technical Data, page 38 . For best results, always
install the pump as close as possible to the
material source. Minimize suction requirements
to maximize pump performance.
Fluid Outlet Line
1. Connect a grounded, flexible fluid hose (N) to
the fluid inlet port. The port on pumps with
aluminum, stainless steel, or cast iron fluid
sections is 2 in npt(f) or 2 in. bspt. On pumps
with polypropylene, conductive polypropylene,
or PVDF fluid sections, the port is a 2 in. raised
face ANSI/DIN flange.
2. Install a fluid drain valve (L) near the fluid outlet.
3. Install a shutoff valve (M) in the fluid outlet line.
14 859.0761