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7.7
REPLACING PCB LITHIUM BATTERY
It is recommended that the replacement of the battery is only
carried by Purite approved Engineers or by Purite personnel.
The Battery has a 5-year life, but it is recommended that it
should be changed every 3 years.
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Turn off the water supply, isolate from the electrical supply and
unplug the mains lead from the rear of the unit.
Open the front door to gain access to the two Top cover retaining
button head socket screws.
Unscrew using a 3mmAF Allen key.
Lift off the lid.
The Lithium battery is located at the top right hand edge of the main
circuit board. See Fig-23.
To remove the battery gently pries up the spring retainer and slide
out he battery. See Fig-24. Dispose of the battery according to local
regulations.
Refit the new battery ensuring the +ve side is facing upwards
Incorrect fitting of the battery could cause irreversible
damage to the main PCB. Ensure +ve side of battery is
facing upwards. Always use recommended battery Part No.
R083085.
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Replace top cover, switch the electrical power back on and turn on
the water supply.
Fig-23
Fig-24
Main
PCB
Battery
Spring
Retainer
Clip
Select Neptune Manual Iss: B