Maintenance
5-3
P/N 7135268B
E 2008 Nordson Corporation
PURBlue EC
Preventive Maintenance
The maintenance intervals are general guidelines based on experience.
Depending on the operating environment, production conditions and melter
hours of operation, other scheduled maintenance tasks may prove
necessary.
Melter part Activity Interval Refer to page
Complete melter External cleaning Daily 5-4
Inspect for external
damage
Daily 5-4
Purge with cleaning
agent
When material is changed 5-4f
Fan and air filter Check filter, clean or
replace if necessary
Clean fan screen
Depending on dust
accumulation; daily if necessary
5-6
Power cable Inspect for damage Every time the melter is serviced −
Air hoses Inspect for damage Every time the melter is serviced −
Pump Tighten gland After initial startup 5-7
Check for leakage,
tighten gland if
necessary
Depending on hours of
operation, pump speed and
pump temperature
Recommendation: Monthly
Tighten fixing screws Every 500 hours of operation
Motor / gear box Clean fan cover Depending on dust
accumulation; daily if necessary
−
Change lubricant Every 15000 hours of operation
or at least every 4 years
5-8
Pressure control valve Replace O-rings At the latest when leakage
occurs
5-9
Tank Clean tank by hand
Keep inert gas inlet
clean
When there is material residue in
tank
5-10f
Safety valve plate Replace O-ring(s) At the latest when leakage
occurs
5-12
Tank isolation valve Replace O-rings At the latest when leakage
occurs
5-14
Safety valve Activate piston Monthly 5-15
Pneumatic safety valve Performance check;
replace if necessary
Every six months 5-16
NOTE: Motor controllers are maintenance-free.
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