190.210-IOM (FEB 20)
Page 13
LAZERWELD II PLATE HEAT EXCHANGER
MAINTENANCE
Maintenance
To keep the LZWII in good condition regular maintenance
is required.
The plates (cassettes) need to be cleaned on a regular ba-
sis. The frequency depends on several factors such as type
of media and temperatures. Three methods can be used
for cleaning. See
Cleaning-In-Place (CIP)
,
Manual cleaning
,
or a reconditioning at an FRICK authorized service center.
NOTICE
If cleaning in place, use modulating or soft pumps to
avoid high flow rates and pressure shocks.
CLEANING-IN-PLACE (CIP)
The Cleaning-In-Place (CIP) equipment permits cleaning of
the PHE without opening it. Benefits of CIP inlcude:
• Removal of fouling and lime scale deposits.
• Passivation of cleaned surfaces to reduce susceptibility
to corrosion.
• Neutralization of cleaning liquids before draining.
See CIP equipment instructions.
WARNING
Use proper protective equipment, such as safety
boots, safety gloves and eye protection, when using
the cleaning agents.
WARNING
Corrosive cleaning liquids can cause serious injuries
to skin and eyes!
FRICK guarantees that plates (cassettes), gaskets, and ad-
hesive cannot be damaged if the procedures and cleaning
agents specified are used.
If CIP is inappropriate, cleaning must be done manually.
See
MANUAL CLEANING
To perform manual cleaning it is necessary to open the
LZWII and lift out the cassettes to clean them. Only every
second channel (gasketed) is feasible to clean.
Note:
For manual cleaning of heat exchangers in refrigerant ser-
vices, contact your FRICK representative.
Opening
NOTICE
Before opening the PHE check the warranty condi-
tions. If in any doubt, contact a FRICK sales repre-
sentative. See
WARNING
If the PHE is hot, wait until it has cooled down to
about 104°F (40°C).
WARNING
If necessary, use proper protective equipment, such
as safety boots, safety gloves and eye protection,
depending on type of media in the PHE.
