Thommen STRATOTIMER ST3, Инструкция по установке и эксплуатации

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Installation and Operating Manual
Stratotimer ST3
31-20-01
Page 202
MAINTENANCE PRACTICES
Revision: 1.00
12/06/2020
2. Battery Replacement
The battery (CR2450 (3V)) for the Stratotimer ST3 must be replaced every 10 years or when
failure code FC12 is displayed in the top RH corner of the display.
To remove the battery, do the following steps (refer to Figure 201):
(1) Remove the Stratotimer ST3 from the aircraft instrument panel (refer to Removal /
Installation, page block 401).
(2) Loosen the captive screw from the backplate of the Stratotimer ST3.
(3) Rotate the cover to get access to the battery and the USB connector.
(4) Remove the slot plate and battery.
(5) Remove the battery from the slot plate.
(6) Dispose of the battery in an environmentally friendly manner.
To install the battery, do the following steps (refer to Figure 201):
CAUTION: THE POSITIVE POLE OF THE BATTERY MUST BE AT THE TOP OF THE
SLOT PLATE.
(1) Press the battery in the slot plate.
(2) Install the slot plate and battery in the Stratotimer ST3.
(3) Rotate the cover to close the access to the battery and USB connector.
(4) Tighten the captive screw. Do not use Loctite.
(5) Install the Stratotimer ST3 in the aircraft instrument panel (refer to Removal / Installation,
page block 401).