Leakage during operation
See "Troubleshooting" on page 10.
Prolonged out-of-service time
A plate heat exchanger that has been out of service for a prolonged period must be drained and
cleaned. After draining and cleaning, clamp the plate heat exchanger together with light pressure and
cover the plate stack with black plastic to protect the rubber gaskets against exposure to light. Before
the plate heat exchanger is put into service again, it must be reclamped to the indicated minimum
value. See "Assembly and clamping" on page 8.
Leakage at start-up
Leaks may occur when the heat exchanger is put into service. They should stop as soon as the gaskets
and plates reach the operating temperature and the pressure is evenly distributed over the entire plate
heat exchanger.
Disassembly and assembly
Bear the following points in mind when taking apart or fitting the plate heat exchanger:
Relieve pressure and allow unit to cool down
Correct assembly and clamping
Correct dismantling
Relieve pressure and allow unit to cool down
Before the plate heat exchanger is dismantled, the pressure must be relieved and the unit must be
allowed to cool down to a temperature below 35°C. If the plate heat exchanger is dismantled at a
temperature above 35°C, the gaskets may be detached from the plates.
Correct assembly and clamping
Inspect the plates and gaskets carefully before
assembly. The plates must be entirely free from
deposits, and the sealing surfaces must be free
from grease and other contaminants. A grain of
sand on the sealing surface can cause a leak
during operation and damage the gaskets.
Assemble the plates as shown in the diagram
with the gaskets always facing the fixed cover.
If the gaskets are new, clamp the plate heat
exchanger to the minimum value plus 0.1 mm
per plate; otherwise clamp it to the minimum
value. The fixed and moveable covers must be
parallel to each other. For this reason the
clamped assembly must be measured at both
the top and the bottom on both sides.
Brouwland
Korspelsesteenweg 86 • B-3581 Beverlo, Belgium
Phone +32 (0)11 40 14 08 • Fax +32 (0)11 34 73 59
[email protected] • www.brouwland.com
Manual
057.110.x Wort Cooler Plate Heat Exchanger,
Stainless Steel
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