Alfa Laval GJ PF-FT, Instruction Manual, Page: 14 / 43

4 Operation
14
Pay attention to possible faults
Read the instructions carefully
4.4 Poor Cleaning Performance
- Inadequate Flow and Pressure
Check the pressure at the Alfa Laval GJ PF-FT inlet under actual operating conditions. The supply piping and hoses must
be large enough to handle the flow rate required for the nozzle size being used to ensure adequate pressure.
Insufficient pressure may also result from line losses when the machine is far from the pump. If this is the case, the line
size must be increased accordingly for long runs. Although the Alfa Laval GJ PF-FT will rotate at low flow rates, effective
cleaning may require considerably more flow. Proper mechanical operation (the unit turns) is NOT the same thing as
effective cleaning (the soils have been removed)! Contact Alfa Laval Tank Equipment if assistance is required.
- Chemical Concentration and Temperature
Verify that the cleaning solution is the correct compound and in the concentration needed for the deposit being cleaned. If
heating is necessary, also check that the solution is at the proper temperature.
- Plugged Nozzles
Unscrew the Nozzles (47) and inspect for any debris.
- Slow or no Rotation of the Housings
This will result in partial or erratic washing coverage. Refer to previous sections for more information.
- Alfa Laval GJ PF-FT Configuration
Determine if the deposit being cleaned requires greater jet impact or longer jet dwell time (slower rotation) for more thorough
scrubbing. Confirm that the Alfa Laval Gamajet nozzle size, turbine, and gearing are correct for the specific application. Refer
to the machine
’s Birth Certificate for specific information regarding its configuration. Contact an Alfa Laval Tank Equipment
representative if assistance is required.
- Inadequate Drainage
Ensure that the vessel drains the effluent (used wash fluid) as fast as it
’s being sprayed in through the Alfa Laval Gamajet. The
floor of the vessel should be sloped or pitched toward the drain and the drainage opening should be large enough to gravity-
drain the effluent from the vessel. If you still have puddling (build-up of the wash fluid so it covers the floor and shields the
residues underneath), use some form of pump to remove the effluent.