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Drain port (Vent hole)
Leaked liquid drains through the drain port at the time of accidental diaphragm rupture.
Use an appropriate chemically-resistant tube to the port to safely collect the liquid.
NOTE
• Do not plug the drain port. The port functions as a vent hole to keep the pressure behind the diaphragm back
atmospheric.
• Do not immerse the end of a drain tube in drained liquid, or the liquid may be pumped up into the compart
-
ment behinde the diaphragm back.
• Liquid in the drain tank is the sign of the damaged diaphragm. Immediate inspection or repair is necessary.
Do not leave this condition as it is. Fumes or vapors from certain solutions may move up into the pump via the
drain tube and attack its inside.
Drain port (Vent hole)
Empty drain tank
Do not locate the drain tube
end below a liquid level.
Do not take in fumes from
corrosive chemicals such as
sodium hypochlorite.
Noncorrosive chemicals in a
supply tank. The drain tube end
must stay above a liquid level.
Drain port (vent hole)
*Applicable tube size
Inner diameter: 6mm
Outer diameter: 12mm or below
(6mm dia.)
(7.5mm dia.)
(20mm)
