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Pre-treatment equipment in operation should be routine maintenance and regular maintenance, maintenance content and maintenance frequency is shown in Table 3-5 and Table 3-6.
|
Inspection items |
Item |
Standard |
Remarks |
|
Each process |
Metal mesh (strainer) |
Normal |
|
|
Nozzle, spray pipe |
Normal |
|
|
|
Pressure |
Given value |
|
|
|
Temperature |
Given value |
|
|
|
Spraying of spraying |
Given value |
|
|
|
Pumps, motors |
Normal |
|
|
|
Liquid level in the tank |
Given value |
|
|
|
Heating unit |
Heat supply |
Normal |
|
|
Heat exchanger population temperature |
Given value |
Record Adjustment |
|
|
Circulation system pressure |
Given value |
Sweeping |
|
|
Heated oil-water separator |
Temperature |
Normal |
Record Adjustment |
|
Circulating fluid volume |
Given value |
Adjustment |
|
|
Discharge oil volume |
Normal |
Records |
|
|
De-slagging device |
Circulating fluid volume |
Given value |
Adjustment |
|
Clearness of circulating back fluid |
Normal |
Sweeping |
|
|
Residual discharge volume |
Normal |
Records |
|
|
Pharmacological supplementation |
Replenish the liquid volume in the tank |
Normal |
Recording, adjustment |
|
Supplementary additions |
Normal |
Adjustment |
|
|
Water supply |
Given value |
Adjustment |
|
|
Other |
Dosage of pharmaceuticals |
Records |
|
|
Number of units handled |
Records |
|
|
|
Work sequence |
Item |
Maintenance Frequency® |
Remark |
|
Pre-skimmed |
Tank, circulation system |
1/month |
Waste cleaning |
|
Degreasing |
Tank, circulation system |
1/12 months (less than 10,000 units/year) 1/6 month (1~50,000/year) 1/4 month (50,000+) |
Inverted groove cleaning |
|
Heated oil-water separator |
1/month 1/6 months |
Inspection and cleaning Cleaning Cleaning |
|
|
First wash |
Tank, circulation system |
1/month |
Waste cleaning |
|
Second wash |
Tank, circulation system |
1/3 month |
Waste cleaning |
|
Tables |
Tank, circulation system |
1/month |
Waste cleaning |
|
Phosphorization |
Tank, circulation system |
1/12 months (less than 10,000 units/year) 1/6 month (1~50,000/year), 1/4 month (50,000+) |
Inverted groove cleaning |
|
1/12 months |
Nitric acid cleaning or disassembly cleaning |
|
|
|
Heat Exchangers |
1/month |
Nitric acid cleaning |
|
|
1/year |
Disassembly for cleaning |
|
|
|
Nitric acid tank |
1/year |
Sweeping |
|
|
De-slagging system |
1/6 months |
Sweeping |
|
|
Third wash |
Tank, circulation system |
1/month |
Waste cleaning |
|
Fourth wash |
Tank, circulation system |
1/3 month |
Waste cleaning |
|
Pure water washing |
Tank, circulation system |
1/6 months |
Waste cleaning |
The frequency of ① is determined by reference to experience and relevant case records, and depends on the operation of the equipment.
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