
Installation
8 3A5999D
Mountings
NOTE: The pump exhaust air may contain contami-
nants. Ventilate to a remote area if the contaminants
could affect your fluid supply. See Air Exhaust Ventila-
tion on page 10.
• Be sure the mounting surface can support the
weight of the pump, hoses, and accessories, as well
as the stress caused during operation.
• For ease of operation and service, mount the pump
so the air valve cover, air inlet, and fluid inlet and
outlet ports are easily accessible.
Air Line
1. Install the air line accessories as shown in FIG. 2.
Mount these accessories on the wall or on a
bracket. Be sure the air line supplying the accesso-
ries is grounded.
a. Install an air regulator (B) and gauge to control
the fluid pressure. The resultant fluid outlet
pressure will be no higher than the setting of the
air regulator.
b. Locate one bleed-type master air valve (C)
close to the pump and use it to relieve trapped
air. Locate the other master air valve (A)
upstream from all air line accessories and use it
to isolate them during cleaning and repair.
c. The air line filter (B) removes harmful dirt and
moisture from the compressed air supply.
2. Install a grounded, flexible air hose (D) between the
accessories and the 1/2 npt(f) pump air inlet (F).
Use a minimum 3/8 in. (9.5 mm) ID air hose. Screw
an air line quick disconnect coupler (E) onto the end
of the air hose (D), and screw the mating fitting into
the pump air inlet snugly.
3-A Pumps: If a leak sensor kit was supplied with
your 3-A pump, see the provided kit manual for
information on installing the sensors. See Related
Manuals, page 2.
Fluid Suction Line
1. Use flexible, grounded fluid hoses (G).
2. For best sealing results, use a standard tri-clamp or
DIN style sanitary gasket of a flexible material such
as EPDM, Buna-N, fluoroelastomer, or silicone.
NOTE: Compliance with 3-A sanitary standards requires
DIN connections to use certain gaskets. See CCE Coor-
dination Bulletin Number 2011-3.
3. If the fluid inlet pressure to the pump is more than
25% of the outlet working pressure, the ball check
valves will not close fast enough, resulting in ineffi-
cient pump operation. Excessive inlet fluid pressure
also will shorten diaphragm life. Approximately
3-5 psi (0.02-0.03 MPA, 0.21-0.34 bar) should be
adequate for most materials.
4. See the Technical Data for maximum suction lift
(wet and dry). For best results, always install the
pump as close as possible to the material source.
A bleed-type master air valve (C) is required in the sys-
tem to relieve air trapped between this valve and the
pump. Trapped air can cause the pump to cycle unex-
pectedly, which could result in serious injury including
splashing in the eyes or on the skin, or contamination
from hazardous fluids. See FIG. 2.
Do not connect the coupler (E) to the fitting until you
are ready to operate the pump. Connecting the coupler
too early can result in unintentional operation of the
pump, leading to splashing fluid in the eyes or on the
skin, and contact with hazardous fluids.