Alfa Laval Spiral Heat Exchanger SHE LTL 4L

Verify cover placement and orientation

Ensure gasket and cover compatibility

Select appropriate gasket material

Place gasket and cover in position

Apply and finger-tighten hookbolts ensuring correct cover location

Tighten hookbolts diagonally using recommended torque

Enter the actual working pressure

Retighten hookbolt assemblies in a diagonally opposite sequence

Check recommended torque values in the reassembly section

Admit the cooler of the two media to the SHE first

Start pumps against closed valves

Ensure all pipework and the SHE are filled before opening valves fully

Examine channels for the following issues

Is an optical device needed for inspection?

Is there any massive corrosion or erosion evident?

Is there any mechanical damage suspected?

Describe any detected issues in detail

Contact Alfa Laval for advice if massive corrosion, erosion, or mechanical damage is detected

Select the cleaning method used

Ensure pipework is provided with valved branches for cleaning agents circulation

Are the cleaning agents compatible with the materials of construction?

Use proprietary cleaning agents according to manufacturers' instructions

Provide specific cleaning instructions if detailed fouling/scaling information and unit serial number are available

Flush the unit completely of all cleaning agents

Is the unit drained if not put back into operation immediately?

Ensure neither side of the unit is under pressure

Dismantle flanged joint for cooling water outlet (Type IIIV)

Remove residual gasket material carefully

Secure unit to prevent swinging when mounted on trunnions

Securely fasten hinged covers at piping connections and mounting brackets