Maintenance; Visual Inspection; Resistance Measurement - ASL INTERCOM BPC130 Series Product Manual

7

Maintenance

Please read and observe the instructions and guidelines in Section "Safety and Precautions"
!
!
(page 35) before carrying out any maintenance task. Failure to follow these instructions and
guidelines may cause personal injury and/or damage to the equipment.
7.1

Visual Inspection

A visual inspection of the batteries should be carried out at maximum intervals of three months, as part of
the system maintenance schedule.
Carry out a thorough visual inspection looking for signs of corrosion on or around the batteries, signs of
leakage, a cracked case or top, missing protective caps.
7.2

Resistance Measurement

The BPC130 charger monitors the batteries' resistance and reports a fault when high resistance is detected
( > 100
– The yellow fault LED flashes three times at regular interval.
mΩ)
The resistance of each battery should be measured at maximum intervals of three months, as part of the
system maintenance schedule. The battery resistance can be measured with appropriate battery tester
(Yuasa Battery HiTester 3554).
If you find difficulty in accessing the battery terminals, then remove the charger tray as
follows:
a. Ensure that all Mini Circuit Breakers are switched off (switch toggle towards the rear of
the rack).
b. Ensure that the AC mains supply to the charger is isolated.
c. Disconnect the black terminal lead from the left-hand negative battery terminal as
shown in Figure 18 (rack with 800 mm depth) and Figure 19 (rack with 600 mm depth).
d. Disconnect the red terminal lead from the right-hand positive battery terminal at the
front of the rack as shown in Figure 18 and Figure 19.
e. Disconnect all wiring connected to the charger and Mini Circuit Breakers. Do not
disconnect the black and red terminal leads!
f. Remove the charger tray from the rack by undoing six M4 screws.
Once the resistance measurement has been completed:
a. Re-fit the charger tray and reconnect all disconnected wiring following the procedure
described in Section "3.4.1.1 Installing the Charger Tray and Charger" (page 12).
b. Reconnect the AC mains supply to the charger.
c. Switch the required Mini Circuit Breakers ON.
Battery
NPL130-6
BPC130 / BDIST / MDIST – Product Manual
New Value (mΩ)
1.5-1.75
U-0456-0145.doc – Issue: 04 complete, approved
Page 27 of 40
Resistance
Warning Zone (mΩ)
2.52
Critical Zone (mΩ)
3.24