Valid from serial number T-code
713962- 403-414, 669-671, 716-718
Order number Date
218920-040 2005-06-01
© BT Europe AB Service Manual REFLEX RR B/E, RR B/E CC 38- 19
Battery charger – 8340
Service and maintenance
Replacing the computer board
• Loosen the mother board’s catches on the upper and lower guides.
• Pull out the computer board.
• Check that the new computer board is of the right design and pro-
gram version.
• Install the new computer board.
If the computer board’s EE-prom has not been written to, this will be updat-
ed when the charger is started. If it has been written to, the error message
E.77 is shown. Perform copy-over using code 22. (* 22 * 2451 *).
Replacing the mother board
• Remove the computer board.
• Remove the bottom grille, applies to the wall mounted model.
• Disconnect all connections.
NOTE:
Exercise care with the thermal wires.
• Loosen the five nuts and lift the mother board out of the charger.
• Install the new mother board.
• Connect the computer board.
• Perform full basic programming, calibration and resetting of statis-
tics.
Replacing the diodes
There are two types of diode: 40HF40 with red connectors, which are
used in charger’s positive cooler and 40HFR40 with blue connections
used in the charger’s negative cooler. Some types have mixed connec
-
tions, i.e. both types are mounted in the same cooler. If these types are
not available you can use another diode that withstands at least 40 A,
400 V, and has ¼“ threads.
• Secure the diode so that the body lies against the heatsink, check
using feeler gauges.
• Only tighten by hand.
Recommended tightening torque, 2.5 Nm.
38.4.9 Preventive maintenance
In normal environments the charger requires no maintenance. In dusty
premises we recommend regular cleaning to ensure cooling and there
-
by the efficiency of the charger. Cleaning may only be carried out by
qualified personnel.
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