6 Maintenance
18
Maintain the Tank Cleaning Machine with care. Read the instructions carefully and pay special attention to the
warnings! Always keep Minor spare parts kit in stock.
6.2 General Dismantling Setup
Step 1
NOTE
A rigorously implemented preventative maintenance program will significantly reduce repair costs over the life of the Alfa Laval
GJ 18. The foundation of such a program is regularly scheduled inspections to discover and replace worn or damaged parts
before they can cause the failure of other, more costly, components. The inspection intervals required will depend on the severity
of the application, but a complete internal inspection at 100 hours of operation is recommended initially.
Step 2
STORAGE
The Alfa Laval GJ should be rinsed with clean water after each use to remove any foreign material or soft substances left in the
machine that may harden during storage and cause the unit to seize or lock up. A clean water rinse through the Alfa Laval GJ
18 will also wash out any residues of chemical cleaners or recirculated wash water that could adversely affect the seals and O-
rings during prolonged contact in storage. The best position to store the Alfa Laval GJ is to stand it up with the inlet connection
facing down.
Step 3
EXTERNAL INSPECTION INTERVALS
Before every shift, the Stator (pos. 3) and the Nozzles (pos. 36) should be inspected for debris. Examine the Stator by looking
down into the Inlet Collar (pos. 1). Look into each Nozzle for signs of debris or build-up.
Step 4
INTERNAL INSPECTION INTERVALS
An interval of 100 hours is recommended initially. If all the components are found to be in acceptable condition after the first
100 hours, the Alfa Laval GJ may then be inspected and routine preventive maintenance should be performed every 300 to 500
of operation, depending on the severity of use.
Step 5
TIPS
All the Bearings, Bushings, Seals and O-rings are “wear parts”. Ideally, they should all be replaced, as a group, every 300 to
500 hours of operation, depending on the severity of use. If just one Bearing or Seal is worn or damaged, replace both it and its
mate, not just the worn or damaged part. Verify that the mating Bearing Cups (pos. 24.2, pos.32) are not scored. Replacing new
bearings and seals in scored cups may prematurely wear the new bearings and may cause premature failure of the bearings
and seals.