Periodic Maintenance
Apollo SL50 / SL60 Installation Manual
41
A
PPENDIX
B - P
ERIODIC
M
AINTENANCE
The SL50/60 unit is designed to not require any regular general maintenance except as
included in this section.
L
ITHIUM
B
ATTERY
R
EPLACEMENT
The internal keep alive battery will require replacement after 4 to 6 years. Regular planned
replacement is not necessary. The SL50/60 will display a “low battery” message when
replacement is required. Once the low battery message is displayed, the battery should be
replaced within 1 to 2 months. If the battery is not replaced, the internal ram memory and the
system clock information will be lost.
To replace the battery, remove the SL50/60 from the aircraft, remove the top cover, and
replace the battery. Make sure to insert the battery in the correct polarity. Replace the top
cover, re-install the unit in the aircraft, and verify unit operation.
Battery replacement should be done only by the II Morrow factory or by a trained technician.
Note: The battery is to be replaced only with II Morrow part #148-1702, or a
II Morrow approved equivalent.
Caution
The battery may explode if mistreated. Risk of fire, explosion, and burns. Do
not recharge, disassemble, heat above 100
°
C, or incinerate.
Dispose of batteries promptly. Keep away from children.
Be sure the battery is inserted in the right direction.
E
QUIPMENT
C
ALIBRATION
The SL50/60 design requires very few adjustments or calibration to be made. In fact, there are
no
internal manual adjustments.
R
EFERENCE
O
SCILLATOR
The reference oscillator frequency should be checked approximately every 3 to 5 years to
ensure the units transmit frequency is within allowable tolerance.
The oscillator frequency can be checked by connecting the transmitter output through an
appropriate load to a calibrated frequency counter. The transmit frequency should be within
15ppm of the selected channel frequency. Contact the II Morrow factory for instructions on
adjusting the frequency if required.
C
LEANING THE
F
RONT
P
ANEL
The front bezel, keypad, and display can be cleaned with a soft cotton cloth dampened with
clean water. DO NOT use any chemical cleaning agents. Care should be taken to avoid
scratching the surface of the display.
Summary of Contents for Apollo SL50 GPS
Page 1: ...Apolloâ Model SL50 GPS Model SL60 GPS VHF COMM Installation Manual February 2002 560 0957 02 ...
Page 4: ...NOTES ...
Page 8: ...Table of Contents iv Apollo SL50 SL60 Installation Manual NOTES ...
Page 16: ...Introduction 8 Apollo SL50 SL60 Installation Manual NOTES ...
Page 36: ...Installation 28 Apollo SL50 SL60 Installation Manual NOTES ...
Page 44: ...Specifications 36 Apollo SL50 SL60 Installation Manual NOTES ...
Page 46: ...Limitations 38 Apollo SL50 SL60 Installation Manual NOTES ...
Page 50: ...Periodic Maintenance 42 Apollo SL50 SL60 Installation Manual NOTES ...
Page 54: ...Accessories 46 Apollo SL50 SL60 Installation Manual NOTES ...
Page 62: ......