Block Diagram; Maintenance; Clearing The Fan - GE GEP User Manual

7.2 Block Diagram

GEP series main circuit is shown in the below figure:
GEP12~20-L-10
GEP25~36-10
SWITCH
BOOST
DC
PV1+
DC
PV1-
BUS
DC
DC
PV2+
EMC
PV2-
DC
Filte
PV3+ DC
PV3- DC
GEP30~35-L-10
GEP50~60-10
BOOST
SWITCH
PV1+ DC
DC
DC
PV2+
EMC
PV1- Filter
DC
PV2-
DC
BUS
DC
PV3+
DC
DC
PV4+
EMC
PV3- Filter
DC
PV4-
DC
PV5+
DC
DC
PV6+
DC
EMC
PV5- Filter
DC
PV6- DC
39
OUT FILTER
INV AC RELAY
DC
AC
AC
EMC
Filter
Filter
AC
OUT FILTER
AC RELAY
INV
DC
AC
AC
EMC
Filter
Filter
AC

8 Maintenance

Regular maintenance ensures a long operating life and optimal efficiency of the entire PV plant.
Caution: Before maintenance please disconnect the AC breaker first and then disconnect DC
breaker. Wait 5 minutes until the residual voltage has been released.

8.1 Clearing The Fan

Series inverter is equipped with three fans on its left side. The fan intakes and handle covers
should be cleaned yearly with a vacuum cleaner. For more thorough cleaning, completely remove
L1
the fans.
L2
Disconnect the AC breaker first and then disconnect DC breaker.
L3
Wait 5 minutes until the residual voltage has been released and the fans are no longer turning.
N
PE
Disassemble the fans (refer to the below figure).
1. Loosen the five screws with a crosshead screwdriver, then remove the fans out the cabinet
about 50mm slowly.
3. Open the lockers of the three fans connectors and remove them from housing, then take the
fans away.
• Clean the ventilation grid and the fan with a soft brush, a paint brush, a cloth, or compressed
air.
• Reassemble the fans into the cabinet
• Please use towel to clean the heatsink once a year.
L1
L2
L3
N
PE
40