0106804 b - Model 106 Current Meter - Operating Manual
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2019 – Valeport Ltd
Page | 17
5.
Maintenance
5.1.
Battery Replacement
The single D cell battery (alkaline or Lithium) is housed within the instrument at the front end. The procedure
to replace the battery is as follows:
1.
Remove the four M3 titanium countersunk screws on the impeller side of the central bulkhead.
2.
Gently slide the outer housing and impeller assembly off the bulkhead, taking great care not to scratch or
damage the internal bore of the housing.
3.
The battery cage accepts a single D cell. It is advisable to use an alkaline cell as this gives increased life
and leakage protection. The batteries should be inserted with the contacts towards the front, making
sure that the connector lead is firmly in place before clipping the battery into the holder.
4.
Before replacing the housing, check the condition of the O-rings, which should be free of cuts or
perishing. Also check the condition of the sealing bores of the housing which should be free of scratches.
Finally smear a light coating of silicon grease on the O-rings and housing sealing bores to aid refitting
and subsequent removal.
5.
Further reassembly is a reversal of the disassembly process.
Should any of the M3 countersunk screws be lost it is imperative that they are only replaced with titanium
M3 x 6 countersunk screws, otherwise there is a risk that galvanic corrosion will occur which could seriously
damage the housing.
5.2.
Battery Replacement - 8008 CDU
The batteries are housed within the CDU under the battery cover. The procedure for replacing these is as
follows:
1.
Remove the battery cover.
2.
Remove the top PCB by undoing the retaining screw to reveal the battery cells.
3.
The battery accepts 8 "C" cells [LR14 or equivalent]. It is advisable to use alkaline cells as this gives
increased life and leakage protection. The batteries should be inserted -ve end against the spring and the
top PCB should then be screwed back into place.
4.
Before replacing the battery cover; check the condition of the O-rings, which should be free of cuts or
perishing. Also check the condition of the sealing bores of the battery cover which should be free of
scratches. Finally smear a light coating of silicon grease on the O-rings and battery cover sealing bores to
aid refitting and subsequent removal.
