Page 6
2.0
Installation
2.1
Mounting Location
[
Choose an area located near the chemical supply tank, chemical injection point, and electrical supply. Install the
pump where it can be easily serviced.
[
Mounting brackets are included. Mount the pump to a secure surface using the enclosed mounting hardware.
[
Mount the pump close to the injection point. Keep the inlet (suction) and outlet (discharge) pipe or tubing as short as
possible. Longer discharge tubing increases back pressure at pump head.
[
Keep the suction lift height as low as possible. Increased suction lift heights can decrease the pump’s efficiency.
[
A back flow prevention check valve is recommended at the injection point to prevent system fluid from flowing back
through the pump during tube replacement or if the tube should rupture.
The check valve internals must be kept
clean.
Any build up in the valve will
increase the pressure at the pump reducing the life of the pump tube.
Back
flow check valves are available from the factory.
[
The Flex-Pro does not require back pressure. Pressure regulator valves should
NOT
be used as back-flow preven-
tion valves unless adjusted to the minimum possible opening pressure.
Any additional pressure at the pump will
reduce the life of the pump tube.
[
A pressure relief valve is recommended at the discharge of the pump to prevent excessive pressure resulting in
premature wear and damage to the pump tube in the event the discharge line becomes blocked.
[
An anti-syphon valve is not required. While the tube is pinched, syphoning cannot occur. A ball-type shut-off valve is
recommended on the discharge side of the pump, prior to the injection point, to prevent syphoning during pump mainte-
nance and tube replacement.
All diagrams are strictly for guideline purposes only. Always consult an expert before
installing metering pump on specialized systems. Metering pump should be serviced by
qualified persons only.
!
Always wear protective clothing, face shield, safety glasses and gloves when working on
or near your metering pump. Additional precautions should be taken depending on
solution being pumped. Refer to MSDS precautions from your solution supplier.
Risk of chemical overdose. Be certain pump does not overdose chemical during
backwash and periods of no flow in circulation system.
CAUTION
!
CAUTION
!
CAUTION
Flex-Pro
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n
Raise metering pump 4-1/2 inches (11.43 cm) off ground or a surface.
n
Made out of tough Stainless Steel.
n
Provides a stable mounting surface.
Stainless Steel extended brackets allow the pump to be securely mounted to most any
surface; floor, shelf, or skid. Brackets lift the pump up 4-1/2 inches (11.43 cm), for easy pump
access in hard to reach areas.
Extended Brackets
A
B
C
D
E
10-3/4”
8-1/8”
15-1/4”
10”
12-1/4”
27.3
20.6
38.9
25.4
31.0
14-1/4”
12-1/8”
18-5/8”
11”
13-5/8”
36.1
30.8
47.3
27.9
34.6
F
4-1/4”
10.7
6”
15.2
14.2"
(36.1cm)
6.0"
(15.2cm)
12.13"
30.8cm)
Front View
11.0"
(27.9cm)
13.63”
(34.6cm)
18.63”
(47.3cm)
Right View
A
B
F
C
D
E
Mounting Hole Spacings
(for standard and extended type brackets)
M-4 Series
11.50” (29.2 cm)
M-3 Series
8.25” (20.9 cm)
2.5” (6.35 cm)
Flex-Pro
Maximum bolt hole size
0.200” diameter (4 places)
2.2 Mounting Dimensions
