4 Installation
11
Read the instructions carefully and pay special attention to the warnings! Always check the tank cleaning
machine before operation.
Step 9
Capacity of Supply Pump
The Alfa Laval GJ 18 can be used with a constant volume-style pump, e.g. a centrifugal or positive displacement (PD) pump.
In most cases, if the unit is to be used with a centrifugal pump, it should be configured so that the pump will operate close to
its best efficiency point. The end user must therefore consider all the plumbing, elevation, and cleaning unit pressure/flow rate
requirements.
If a PD style pump (i.e. piston pump, plunger pump, or mechanical diaphragm pump, etc.) will be supplying the wash fluid to
the Alfa Laval GJ 18, a different set of rules applies. PD pumps are fixed volume pumps whose flow rate is dependent upon
the rotational speed of the pump; the pumps also have a pressure rating which is the maximum operating pressure. Note: Do
not confuse the maximum operating pressure of a PD pump with the actual operating pressure, the actual operating pressure
is dictated by the fixed flow rate of the pump and the Alfa Laval GJ 18 and plumbing system. If a PD pump is used, the Alfa
Laval GJ 18 should be sized to first match the flow capability of the pump and, second, to not exceed the Alfa Laval GJ 18’s
or pump’s maximum operating pressure (taking the pressure rating of the plumbing system into account, also).
Warning: For high-pressure applications (over 150 psig (10 bar)), the pressure of the system must "ramp
up" to its operating pressure. If the system experiences a pressure spike or pressure increases
at a rate of more than 150 psig per second (10 bar/sec), the machine may be damaged, and
parts will wear out prematurely. Damage resulting from this water hammer affect is not covered
by the warranty.
4.3 Recycling Information
• Unpacking
- Packing material consists of wood, plastics, cardboard boxes and in some cases metal straps.
- Wood and cardboard boxes can be reused, recycled or used for energy recovery.
- Plastics should be recycled or burnt at a licensed waste incineration plant.
- Metal straps should be sent for material recycling.
• Maintenance
- All metal parts should be sent for material recycling.
• Scrapping
- At end of use, the equipment must be recycled according to relevant local regulations. Beside the equipment itself, any
hazardous residues from the process liquid must be considered and dealt with in an appropriate manner. When in doubt, or in
the absence of local regulations, please contact your local Alfa Laval sales company.