11
Caution
Do not narrow the contaminant drain port. Excessive flow
restriction( ≦20L/min) may decrease the pump performance and
damage the pump.
Caution
A gate valve is highly recommended for a contaminant drain line.
Caution
Contaminant drain line must be assembled below the coolant
surface level as shown on figure 7, to ensure that air doesn’t
enter the system.
Figure 7
Figure 7
Figure 7
Figure 7：
：
：
：Recommended
Recommended
Recommended
Recommended PPPPiping
iping
iping
iping LLLLayout
ayout
ayout
ayout to
to
to
to Avoid
Avoid
Avoid
Avoid AAAAir
ir
ir
ir Entering
Entering
Entering
Entering into
into
into
into the
the
the
the System
System
System
System....
Caution
The pumps can make louder noise at the first run but will stop
once the trapped air in a contaminant drain port is fully released.
Caution
Make sure there is no blocking or clogging in contaminant drain
line.
Caution
Do not return contaminant drain piping into the coolant tank.
Outlet
Outlet
Outlet
Outlet PPPPort
ort
ort
ort
・
Outlet line pipes must be as large as the outlet port diameter and pressure
resistant type.
・
Install a check valve in the outlet line near the port to reduce the time lag from
motor start-up to coolant discharge and to prevent rust inside the pump.
・
Pump and pipes must be filled with fluid at all times.
