A4 - 1
Morley-IAS
996-203-001-2, Rev. 02
Appendix 4 Replacement of Components
1
General
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All components used in the control panel have been chosen for high reliability and long life. The
manufacturers’ data on the following items indicates that they may have a life expectancy of less
than 15 years and so may need to be replaced in the future.
1.1
Lithium Standby Battery
CAUTION: A Lithium Battery is used for Clock Retention (Models DXc2 and DXc4).
RISK OF EXPLOSION IF THE BATTERY IS REPLACED BY AN INCORRECT TYPE. Dispose of
used batteries responsibly and in accordance with any local regulations.
Replace only with the same (CR2025) or equivalent type. Contact Sales to order spare parts.
Manufacturer’s expected shelf life
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In excess of 10 Years
Recommended replacement
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10 years.
1.2
Liquid Crystal Alphanumeric Display
Manufacturer’s expected shelf life
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In excess of 10 Years
Recommended replacement
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When the LCD becomes difficult to read.
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The LED-backlit LCD gives a life that is significantly better than most other display technologies.
The contrast of the LCD will gradually deteriorate as this part ages. This item can, therefore, be
changed when normal contrast starts to fade. Replace the complete Display PCB.
1.3
Standby Batteries
Manufacturer’s expected life
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3-5 years at an ambient temperature of 20° Celsius.
Note that l
ife decreases approximately 50% for every 10° Celsius increase in temperature.
Recommended service
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Contact Battery manufacturer/ supplier
Recommended Suppliers
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Yuasa
Types
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7AH Model#:
NP7-12
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12AH Model#:
NP12-12
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17AH Model#:
NP17-12i
Before installation.
New Batteries may require ‘top charging’ prior to being put into service. Refer to battery
manufacturer information for confirmation of this requirement.
Yuasa recommend top charging at 28.8V DC for 15 – 20 hours for batteries up to 6
months old from date of manufacture.
It is normal for lead-acid type batteries to discharge hydrogen while being charged. The panel
is adequately ventilated to dissipate this hydrogen.
DO NOT seal the panel enclosure or mount the panel in a sealed enclosure or cavity.
Dispose of batteries in a responsible manner and in accordance with any local
regulations.
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