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13-25-629 v03 Page 62
ELECTRICAL BOX COOLING SYSTEM MAINTENANCE (1 Phase Variant only)
In order to maintain the VFD module, supplied with 1-phase variants, in good working order, its external
filters, internal ventilation fans and heat sink must be inspected for debris and cleansed one per year.
Follow the following guidelines to achieve this simple task.
Figure 9-6 Electrical Box Cooling Hardware
Cooling System Inspection
1. De-energize, lockout and tagout incoming electrical power to the compressor package.
2. Remove VFD exhaust air duct (47) in Figure 9-6.
3. Inspect external cooling fan/filter assembly (46) in Figure 9-6.
4. Remove dust and debris from fan with a vacuum cleaner or replace if not operational. Contact
Gardner Denver for a replacement cooling fan assembly.
5. Shake off debris and gently wash foam filter medial under tap water and dry off completely.
Replace if damaged.
6. Remove VFD internal cooling fans to access the outlet segment of the heat sink duct
– refer to
the following section
“VFD Cooling Fan Removal and Replacement” for removal instructions.
7. Inspect the heatsink surfaces from the inlet segment of the heat sink duct, be aware that its
surfaces may be hot. Remove debris and dust from its surfaces with a vacuum cleaner placed on
the outlet segment of the heat sink duct.
8.
Reinstall the VFD internal cooling fans, VFD module, external filters and exhaust air duct in the
reverse order.
Summary of Contents for L4-5C
Page 27: ...13 25 629 v03 Page 27 FIGURE 4 5 WIRING DIAGRAM 380V 60 Hz 303ECA546 B Ref Drawing Page 1 of 3...
Page 28: ...13 25 629 v03 Page 28 FIGURE 4 6 WIRING DIAGRAM 380V 60 Hz 303ECA546 B Ref Drawing Page 2 of 3...
Page 29: ...13 25 629 v03 Page 29 FIGURE 4 7 WIRING DIAGRAM 380V 60 Hz 303ECA546 B Ref Drawing Page 3 of 3...
Page 30: ...13 25 629 v03 Page 30 FIGURE 4 8 WIRING DIAGRAM 575V 305ECA546 A Ref Drawing Page 1 of 3...
Page 31: ...13 25 629 v03 Page 31 FIGURE 4 9 WIRING DIAGRAM 575V 305ECA546 A Ref Drawing Page 2 of 3...
Page 32: ...13 25 629 v03 Page 32 FIGURE 4 10 WIRING DIAGRAM 575V 305ECA546 A Ref Drawing Page 3 of 3...
Page 61: ...13 25 629 v03 Page 61 Figure 9 5 Compressor Module Hardware...