Cleaning - Process Technology Lufran LUF Series Manual

Spare Parts (Continued):
Recommendations:
1) One complete spare parts kit is sufficient for every 4 to 6 Lufran fluoropolymer inline water heaters
installed in a single location. Be sure to immediately reorder any parts that are used.
2) Sensors for the inlet/outlet process water (Part # TC-DI-L-2.25) are a required spare part for each DI
Heating Column. Spare sensors have already been provided with the unit. If needed, order 2 spare
control thermocouples per heating column.
Note: Quantities may vary depending on the number of heating columns in a particular unit.

Cleaning:

The LUF-series Lufran fluoropolymer inline water heater was thoroughly cleaned prior to shipment. The
inlet/outlet plumbing connections were sealed and the heating columns were charged with nitrogen gas
prior to shipment. PROCESS TECHNOLOGY recommends that, at a minimum, the following steps be
taken to remove any contamination that may have been added to the system during installation.
Additional steps may be required for certain applications. For sanitization procedures, contact your DI
Water system suppler for their recommendations. The bypass to the DI recirculation loop should be
installed as close as possible to the process tank. Confirm that the bypass plumbing will be able to
withstand the maximum temperature and pressure that will be generated by the system.
This procedure should only be performed by qualified technicians.
1) Allow DI water to flow through the unit unheated with the maximum possible flow rate for one (1)
hour. The effluent should be directed to the drain.
Note: In order to prevent damage to the heater coils, the purge system must be operated any time there
is fluid inside the heater column.
2) Turn ON the heater and set the operating temperature at 70°C
3) Allow the unit to run at the maximum attainable flow rate for at least three (3) hours at elevated
temperature.
4) Sanitize the system. Refer to the material compatibility chart to verify that the o-ring material will not
be damaged by the sanitizing chemicals.
5) Proceed with normal operation after sanitizing and rinse procedures are completed.
Notes: The time required for absolute cleaning of the system will be dependent on DI Water quality, flow
rates, and installation techniques.
System Sanitizing:
Consult your DI Water equipment supplier to determine a method of sanitizing that will be compatible with
all of the materials used throughout the system.
M-43-25
Revision - Date 03-01-04-18
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LUF-Series Lufran Manual
Standard outlet, Standard Interface