Owner manual

Tubing Connections

Inlet and outlet tubing or pipe sizes must not be reduced. Make

certain that all tubing is SECURELY ATTACHED to ttings prior

to start-up (see Section 4.3, Tubing Connections). ALWAYS use

LMI supplied tubing with your pump, as the tubing is specically

designed for use with the pump ttings. It is recommended that

all tubing be shielded to prevent possible injury in case of rupture

or accidental damage. If tubing is exposed to sunlight, black UV

resistant tubing should be installed. Check tubing frequently for

cracks and replace as necessary.

Fittings And Machine Threads

All ttings should be hand-tightened. An additional 1/8 - 1/4 turn

after the tting contacts the seal ring may be necessary to provide

a leak-proof seal. Excessive overtightening or use of a pipe wrench

can cause damage to the ttings, seals, or pump head.

All LMI pumps have straight screw machine threads on the

head and ttings and are sealed by the seal rings or O-rings. DO

NOT use Teon

tape or pipe dope to seal threads. Teon

Tape may only be used on the 1/2" NPT thread side of the

Injection Check Valve as well as stainless steel liquid end

connections.

Plumbing

Always adhere to your local plumbing codes and requirements.

Be sure installation does not constitute a cross connection. Check

local plumbing codes for guidelines. LMI is not responsible for

improper installations.

Back Pressure/Anti-Syphon Valve

If you are pumping downhill or into low or no system pressure,

a back pressure/anti-syphon device such as LMI’s Four Function

Valve should be installed to prevent overpumping or syphoning.

Contact your LMI distributor for furthur information.

CAUTION