Recirculation Cooling Unit
(Optional)
RotoPol-31/-35
Instruction Manual
A Recirculation Cooling Unit (TRECI) can be connected by means
of a Recirculation Cooling Unit Connector (ROPRE).
Connect the cable from the pump in TRECI to ROPRE,
according to the diagram of ROPRE.
Connect the cable with plug from ROPRE to the socket
marked Recirculation on the back of RotoPol-31/-35.
RotoPol (RotoPol-31)
Socket for Recirculation
Connect the cable from ROPRE to the mains.
Check that the pump rotates in the direction indicated on the
pump. If the direction is incorrect, switch two of the phases in
the connection to the pump in TRECI (3-phase versions only).
Replace the outlet tube on the pump in TRECI with the non-
return valve with elbow and hexagon nipple from ROPRE.
Struers recommends that you seal the threads.
Connect the pressure hose of RotoPol-31/-35 to the hexagon
nipple. Remember to mount the gasket.
Select the reduction piece from ROPRE which fits the drain
hose of RotoPol-31/-35. Mount the piece on the outlet angle of
the TRECI.
Shorten the drain hose if necessary. Fix the drain hose on the
reduction piece: strip away a short length of the steel
reinforcement in the drain hose and mount a hose clamp on
the stripped end.
Mount the outlet angle on TRECI.
Avoid sharp bends in the drain hose and make sure that the hose slopes
REMEMBER
throughout its length.
19