6RL SERIES OPERATION MANUAL
SECTION 4: TECHNICAL SPECIFICATIONS
Entire Contents Copyright
2018 by Adaptive Power Systems, Inc. (APS) • All Rights Reserved • No reproduction without written authorization from APS.
6RL Series Regenerative DC Load Operation Manual
Page 47 of 204
5.6.9
AC Input Fuses
This product is fitted with internal mains input fuses. If any of these need to be replaced,
please contact customer service.
This unit is protected by up to six 6.3 x 32 mm fuses (500 V, ceramic) inside the unit. Check
the fuse rating for the DC Mode based on input voltage configuration in section 4,
“Technical Specifications” on page 26. To replace these, the unit must first be disconnected
from the AC supply. Allow 15 minutes for any charged internal circuits to fully discharge.
Remove the top cover to access the 1 to 3 power modules in black plastic housings, each of
which holds two of the fuses.
Note: Removing the top cover and replacing fuses should only be performed by trained
and qualified personnel.
Step 1: Opening the unit
1.
Switch off at the mains switch and remove plug.
2.
Remove the top cover of the unit (5 screws at the back, 5 on the front, 7 on each
side, all Torx 10)
3.
Remove the plastic cover(s) of the power modules.
Step 2: Replacing a defect fuse.
1.
As it is usually unknown which fuse is defect, they should all be checked. The fuses
are on the front sidewall (looking from the front of the unit) of the power modules
and are covered with a soft plastic cap.
2.
Remove the soft plastic cap from the fuse to be tested and carefully pry out the fuse
with a flat screwdriver.
3.
Check whether the fuse is intact with a multi-meter, and if defective, replace with a
similar type (size, rating, delay)
4.
Repeat step 2 for all fuses.
Once all fuses have been checked and replaced, and if no other defect is apparent, the unit
can be reassembled (Step 1 in reverse order)
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