Replacement Of Main Component; Replacement Of Battery Module - Pylontech Force-L2 Operation Manual

Once a certain failure detected following the trouble shooting steps, shut down the battery string
first before replacement to avoid further over discharge to the system due to the
self-consumption.

5.2 Replacement of main component

Caution: Before replace the main component must shut down the maintenance battery string's
power. The shut down progress refer to chapter 3.6.5.

5.2.1 Replacement of Battery Module

5.2.1.1 Use a charger(53.5Vdc, ≤ 10Amps) to charge the new battery module and existing
module to full (SOC 100%)
5.2.1.2 Turn off the whole battery string's power. Must confirm
the D+ and D- terminal are without power. The turn off
progress refer to chapter 3.6.5.
Dismantle the Protection Cover of the Power Terminals.
5.2.1.3 Dismantle D+ and D- Power Cable, Communication Cable and
Grounding Cable if necessary.
5.2.1.4 Dismantle the control Module's fix screw of left and right side.
And dismantle the fix metal brackets.
Under current protection.
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environment and wait until
protection release.
- Temperature normal:
make sure no power cable
connected, try black start
operation.
If works, monitor the voltage
at dc terminal, if too low then
turn off and charge the
system.
If do not response the black
start, use debug tool for
further check.
Check no short circuit or big
capacitor or load at DC side,
before turning on the system