4 Installation
Read the instructions carefully and pay special attention to the warnings!
Always check the tank cleaning machine before operation.
Step 3
Inlet connections
The standard inlet connections for the Alfa Laval GJ PF are a 1-1/2” NPT female/2” male camlock or a 1-1/2” Tri-Clover. Other
inlets are available. It is recommended that when using the pipe thread the mating male thread should be wrapped with PTFE
pipe joint tape prior to mounting. This will minimize any risk of leakage and will make subsequent removal much easier.
Step 4
Mounting
Before mounting the Alfa Laval GJ PF, make sure the supply line
has been adequately flushed. It can be mounted on a rigid 1-1/2”
pipe using a pipe wrench. In most applications, the Alfa Laval GJ
PF will be mounted with the inlet connection pointing up; however,
the PowerFlex will function at any orientation. The PowerFlex can
also be mounted to a 1-1/2” Tri-Clover ferrule via the use of a
Tri-Clover gasket and clamp or a 2” female camlock.
The Alfa Laval GJ PF can be suspended from the top of the tank
via a flexible hose. The dual nozzle machine is designed to have
balanced forces in order to keep it centered even while hanging.
We do not, however, recommend attaching the machine to a
flexible hose while in the inverted or horizontal orientation. This
form of mounting is not rigid and, thus, will not maintain the Alfa
Laval GJ ’s position in the tank.
!
WARNING
When attaching the Alfa Laval GJ PF onto the supply pipe,
ALWAYS apply the wrench to the inlet collar (11) at the top/inlet
of the unit. Never use a wrench on stem (7), tee housing (8) or tee
housing cap (15) to tighten the unit onto the pipe. Doing so risks
internally damaging the machine. Refer to section 6.1 General
maintenance.
4125-0003
15
8
7
11
!
9
Step 5
Location inside tank
Generally, a single Alfa Laval GJ will be positioned in the approximate center of the vessel in order to equalize the cleaning
radius in all directions. Some vessels, however, 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 GJ 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” 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 avoid shadow areas or “striping.”
Step 6
Entry openings
Depending on the configuration, an Alfa Laval GJ PF can fit through a range of tank inlet sizes. For a pin drive machine with
long nozzles, the minimum opening size is 174.7 mm (6.875 inches), while a clutch machine with long nozzles can fit through
a 98.5 mm (3.875 inch) opening with the nozzles oriented vertically. A low-profile nozzle machine can fit through a 97.3
mm (3.830 inch) opening regardless of nozzle orientation.
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