JULABO FLW20006 Recirculating Coolers - Manual (Page 13)

13
Caution: Pump pressure
 Determine and check the max. admissible pressure for the external circuit before
putting the unit into operation. The max. pressure is determined by the weakest
element in the circuit (e. g. glass equipment).
 Securely attach all tubing to prevent slipping.
 Do not seal the overflow!
 Connect the tubings for cooling the external system
to the pump connectors M16x1 for feed and return
(14) on the rear of the recirculating cooler.
– Return - Feed
 Connect a piece of tubing to the overflow connector
(15) and drain into a suitable vessel, which always
has to be placed lower thant the exit „Overflow“.
Do not seal the overflow connector!
 Turn the adjusting valve (13) counter-clockwise to
set the lowest manometric pressure.
 Before operating the unit after transport, wait about
one hour after setting it up. This will allow any oil
that has accumulated laterally during transport to
flow back down thus ensuring maximum cooling
performance of the compressor.
¾”
 Only water cooled models - FLW:
Ensure circulation of cooling water by connecting
the tubing to cooling water inlet (IN)and outlet (OUT)
on the rear (18) of the recirculating cooler.
Cooling water see page 9.
Cooling water connectors G3/4" external thread
Tubing 3/4" inner dia. Tubing, compression-proof
IN Cooling water inlet
OUT Cooling water outlet
Even high quality heat exchangers as they are installed
in our equipment can be damaged by unsuitable cooling
water.
The quality of the cooling water depends on the local
conditions.
The heat exchanger may become leaky due to corrosion
or it may become clogged due to particulate matter
Notice: Flood hazard!
In case the system to be cooled is located at a higher level than the recirculating
cooler, avoid possible flowback of bath liquid back when the unit is switched off.