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Instruction Manual
Fittings and Machine Threads
All fittings should be hand-tightened. An additional 1/8 - 1/4 turn after the fitting is snug may
be necessary to provide a leak-proof seal. Excessive overtightening or use of a pipe wrench
can cause damage to the fittings, seals, or pump head.
Most LMI
®
pumps have straight screw machine threads on the head and fittings and are
sealed by the O-rings. DO NOT use PTFE tape or pipe dope to seal threads. PTFE Tape may
only be used on the 1/2” NPT thread side of the Injection Check Valve, the stainless steel
liquid end connections, except for the head’s discharge port, or if piping is directly connected
to the pipe threads of the suction or discharge fittings.
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 over pumping or
syphoning. Contact your LMI
®
distributor for further information.
Electrical Connections
To reduce the risk of electrical shock, the metering pump must be plugged into a properly
grounded grounding-type receptacle with ratings conforming to the data on the pump control
panel. The pump must be connected to a good ground. DO NOT USE ADAPTERS! All wiring
must conform to local electrical codes. If the supply cord is damaged, it must be replaced by
the manufacturer, stocking distributor, or authorized repair center in order to avoid a hazard.
Fuse (all models) and Battery (AD9 only)
Caution, Battery may explode if mistreated. Do not recharge, disassemble or dispose of in
fire. The battery and fuse are internal, factory serviceable parts, and must be replaced by the
factory or a qualified distributor with parts of the same type and rating.
Flooding
Install this pump in a location where flooding cannot occur.
Ground Fault Circuit Interrupter
To reduce the risk of electric shock, install only on a circuit protected by a Ground Fault
Circuit Interrupter (GFCI).
