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GA02330_002_06 - 01/2010 - © Oerlikon Leybold Vacuum
3.10 Heat exchanger cleaning
WATERDRAIN IF THE COOLING CIRCUIT BEFORE TRANSPORT, LONG
TIME STORAGE, WINTER TIME.
TO DRAIN THE WATER CIRCUIT, CLOSE THE WATER COOLING, REMO-
VE THE BOTH PLUGS ITEM 104 AND PLACE A WATER RECOVERY TRAY
WITH A CAPACITY OF APPROX. 2L UNDER THE HEAT EXCHANGEUR.
WATER MAY BE HOT, TAKE APPROPRIATE SAFETY MEASURES.
FOR PUTTING INTO OPERATION AGAIN, SCREW THE 2 PLUGS ITEM 104
AGAIN INTO THE HEAT EXCHANGER, AND OPEN THE WATER CIRCUIT.
TO CLEAN THE HEAT EXCHANGER: IT IS RECOMMANDED TO CLEAN AT
LEAST TWICE A YEAR THE WATER CIRCUIT.
FOR THAT, DISMANTLE THE EXCHANGER FROM THE PUMP.
CHEMICAL CLEANING IS THE MOST EFFICIENT, WITH DILUTE HYDRO-
CHLORIC ACID SOLUTION (5 TO 10%)
THEN NEUTRALIZE WITH HEXAMETHYLETHYRENETETRAMINE AT 0,2%.
FOR A 1 mm COAT OF SCALE, LEAVE ACTING THE ACID DURING ABOUT
30 MIN.
THE SYSTEM MUST BE OPEN DURING THE OPERATIONS, SO THE PRO-
DUCT GASES CAN ESCAPE.
RINSE COPIOUSLY WITH WATER AFTER NEUTRALIZATION.
PROCEDE IN AN OPEN AND WELL VENTILATED PLACE.
OBSERVE THE SAFETY REGULATIONS GIVEN BY THE MANUFACTURER
OF THE PRODUCT YOU ARE USING
OBSERVE THE REGULATIONS FOR THE TREATMENT AND THE DISPOSAL
OF CHEMICAL PRODUCTS.
OBSERVE THE RELEVANT ENVIRONMENTAL REGULATIONS
Warning
Maintenance
