Replacement timing for consumables
| Consumable | eplacement Timing | Model |
|---|
| Backup battery (5ZVL1200) | approx. every 5 years | NL-21,22,31,32
VM-53,53A,54 |
| Backup battery (5ZNS6210) | approx. every 5 years | NA-28,VA-12,SA-78
NL-42,52,62 |
| Waterproofing silicon tube | approx. every 5 years | NL-42,52,62 |
* The backup battery replacement cycle will vary, depending on usage environment, power-on time and other factors that affect the charge retention capability of the battery.
* Periodic replacement of the backup battery is recommended, to ensure that clock settings, stored data etc. are maintained.
* Periodic replacement of the silicon tube is recommended, to prevent loss of waterproofing due to aging of the tube.