ONLINE ELECTRONICS LTD
2405_5001_A01
Page 12 of 14
4.
MAINTENANCE
NOTE 1 - ALWAYS LOOSEN THE BLEEDSCREW TO RELIEVE ANY INTERNAL PRESSURE
PRIOR TO OPENING.
NOTE 2 - DO NOT EXPOSE TO AGGRESSIVE SOLVENTS OR CHEMICALS WHICH COULD
BE HARMFUL TO THE HOUSING, NITRILE RUBBER O-RINGS, THE ACRYLIC WINDOW,
OR CONNECTORS.
NOTE 3 - OPENING OF THE UNIT SHOULD ONLY TAKE PLACE IN A CLEAN, DRY,
LABORATORY ENVIRONMENT.
NOTE 4 - TO PREVENT THE FORMATION OF CONDENSATION WITHIN THE UNIT
ALLOW THE UNIT TO STABILISE WITHIN THE LABORATORY ENVIRONMENT FOR A
MINIMUM OF 6 HOURS PRIOR TO OPENING.
4.1.
BATTERY REPLACEMENT
1.
Observe how the cable is routed between the 2405 unit and 2401 hydrophone before
carefully loosening and detaching the cable connections at the 2405 and 2401 and feeding
the cable through the forward hole in the mounting plate so that the mounting plate can
be removed without damaging the cable.
2.
Remove the 4x M8 CAP screws that secure the mounting plate to the frame and remove
the mounting plate with 2405 unit and 2401 hydrophone attached being careful not to
damage the cable.
3.
Remove the 2x M10 bolts which hold the 2405 unit onto the mounting plate.
4.
Loosen the bleedscrew on the rear of the 2405 to relieve any internal pressure.
5.
Remove the 4x M5 BUTTON CAP screws around the perimeter of the housing.
6.
Carefully remove the housing from the endcap to reveal the battery pack as shown above.
Ensure that the O-ring seals are protected from damage and contamination while the unit
is open.
7.
Observe how the battery is installed and how the wires are routed before proceeding.
