4. Installation
7
Read the instructions carefully and pay special attention to the warnings! Always check the tank cleaning machine before
operation.
Step 5
Location inside Tank
Generally, a single Alfa Laval Gamajet should be positioned in the approximate center of the vessel in order to equalize the
cleaning radius in all directions. Some vessels may have specific cleaning problems such as coils or heavy deposits such as
the liquid level line (bathtub ring). In these situations the Alfa Laval Gamajet should be located closer to the difficult area for the
best cleaning results.
Tanks with internal mechanisms or structures such as an agitator shaft, impellers or baffles will require careful positioning to
minimize the
“shadow effect” on areas which do not receive direct jet impact. Sometimes, more than one machine, or, more
than one placement of a single machine, may be necessary to completely avoid shadow problems.
Step 6
Entry Openings
When using the Alfa Laval GJ 8, the vessels being cleaned must provide entry openings large enough to avoid interference
during insertion and removal. The minimum opening size required for Alfa Laval GJ 8 is 228.6 mm / 9.0 inches in diameter.
Step 7
Vessel Drainage
If it is necessary to clean the floor of a vessel, remember that standing liquid will diminish the effectiveness of the jet b y
covering any soils underneath. Wherever possible, the tank floor should be pitched toward the drain and the drainage opening
should be large enough to eliminate or reduce any liquid buildup or puddling. If gravity alone is insufficient, a scavenger or
stripper pump should be connected to the drain to suck out the excess wash fluid. In extreme cases, it may be necessary to
use smaller nozzles on the Alfa Laval Gamajet, or even to operate it intermittently to allow time for draining.
Step 8
Filters and Strainers
All tank cleaning systems should be equipped with a filter or strainer that will trap solids 15 mm/1/16" (175 micron, 80 mesh) or
larger, as these will not pass through the Alfa Laval Gamajet. These large particles will not harm the machine, but they can
become caught in one of the internal passages of the machine and cause it to stop turning or reduce its cleaning effectiveness
due to a loss of flow. It will then be necessary to disassemble the Alfa Laval Gamajet and remove the blockage.
In recirculating (closed-loop) cleaning or any other application where the cleaning solution may carry abrasive solids in
suspension, adequate filtration is a must. These particles can be extremely destructive to the Alfa Laval Gamajet, pumps,
valves, and other system components. Filters, properly installed and maintained, will more than pay for themselves with lower
overall operating costs in these applications. Furthermore, to ensure that clogged filters or strainers are cleaned, we
recommend using automatic self-cleaning models.
Summary of Contents for GJ 8
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