Alfa Laval FrontLine ClipLine, Инструкция по эксплуатации, Страница: 68 / 68

The stored plate heat exchanger shall be visually checked every third month.
When closing the packing it shall be restored to original condition. The check
includes:
• Greasing of the tightening bolts
• Metal port covers
• Protection of the plate pack and gaskets
• The packing
7.2 Taken out of service
If, for any reason, the plate heat exchanger is shut down and taken out of
service for a long period of time, follow the precautions in
Indoor storage on
page 67. However, before storage the following actions must be done.
• Check the measurement of the plate pack (measure between frame plate
and pressure plate, the A measure).
• Drain both media sides of the plate heat exchanger.
• Depending on media, the plate heat exchanger should be rinsed and then
dried.
• The connection should be covered if the piping system is not connected.
Use a plastic or plywood cover for the connection.
• Cover the plate pack with non-transparent plastic film.
Start-up after long-term out of service
If the plate heat exchanger has been taken out of service for an extensive
period of time, longer than one year, the risk of leakage when starting up
increases. To avoid this problem it is recommended to let the gasket rubber
rest to regain most of its elasticity.
1. If the plate heat exchanger is not in position, follow the instructions in
Installation on page 23.
2. Note the measurement between frame plate and pressure plate (the A
measure).
3. Remove the feet attached to the pressure plate.
4. Loosen the tightening bolts. Follow the instructions in Opening on page 55.
Open the plate heat exchanger until the plate pack measure is 1.25× A .
5. Leave the plate heat exchanger for 24–48 hours, the longer the better, for
gaskets to relax.
6. Re-tighten according to the instructions in Closing on page 61.
7. Alfa Laval recommends a hydraulic test should be carried out. The media,
usually water, should be entered at intervals to avoid sudden shocks to the
plate heat exchanger. It is recommended to test up to the Design Pressure.
See the PHE drawing.
200000420-4-EN-GB 68
7 Storage of the plate heat exchanger EN