Install Instructions

Fault tracing
Fault tracing
Pressure drop problems
If the pressure drop has increased.
Action
1.Check that all va lves are open including non- return valves.
- M easure the pressure and the flow rate directly in front of
the inlet and after the outlet of the heat exchanger.For viscous
media use a membrane m anom eter with a diam eter of at
least 30 mm.
- M easure or estimate the flow rate if p ossible. A buc ket and a
watch showing seconds may be sufficient for small flow rates.
For larger flow rates, use a flo wmeter.
Correction
YES
-
NO
-
Action
2.Compare the pressure drop observed with the specified
flow rate (see da ta printout). Is the pressure drop higher than
specified?
Correction
YES Check the temperature program, see step 3
NO If the pressure drop corresponds to the specifications,
there is no need for action. If the pressure drop is
lower than s pecified, the pump c apacity is probably
too sm all or the observation may be wrong. See pump
instruction manual.
Action
3.Check the thermometer readings. D o the read ings
correspond to those specified?
Correction
YES The heat transfer surface is probably clean enough,
but the inlet to the heat exchang er m ay be clogged by
some objects. Check the port area.
NO Heat transfer is obviously dropping below
specifications, because of deposits on the heat
transfer surface, whic h at the sam e time also
increases the pressure drop, since the passage
becomes narrower.
If a Cleaning-In-Place (CIP) system is av ailable, follow
the instructions and use it to wash out the deposits.
Document ID
Language
Edition
3450021401 EN 2017-06
Instruction M anual -
Brazed plate heat exchangers
25
EN