APPENDIX E: Replacing the Backup Battery
(NEMA-4 enclosure models only)
The back-up battery will provide about 4–5 years of service life
depending on usage and temperature. After 5 years (or when backup
time is insufficient) the battery should be replaced. Replacement
batteries can be ordered from Phonetics. To replace the battery, fol-
low the instructions below:
1. Disconnect the red battery wire and cover the bare wire with
insulating electrical tape.
2. Disconnect the black battery wire and cover the bare wire with
insulating electrical tape.
3. Unplug the power transformer.
4. Loosen the compression wiring connectors and allow 6-10" of
cable slack to come into the enclosure. This will make it easier
to turn the panel over.
5. Remove the four screws securing the Skymetry housing to the
back panel and carefully remove the Skymetry WTU-14.
6. Remove the connectors from the battery by carefully pulling
and wiggling the connectors from the battery tabs.
7. Remove the screws holding the battery bracket and remove the
bracket.
8. Dispose of/recycle the old battery following local recycling
regulations for lead batteries.
9. Insert the new replacement battery into the slot and replace the
bracket. Secure the bracket with the two screws.
10. Attach the battery connector at the end of the BLACK wire to
the
-
(negative) terminal of the new battery.
11. Attach the battery connector at the end of the RED wire to the
+
(positive) terminal of the new battery.
Appendix E: Replacing the Backup Battery
103
Summary of Contents for Skymetry WTU-14
Page 1: ...WTU 14 User s Manual version 1 11 Phonetics Inc LIT 0085...
Page 5: ...v...
Page 14: ...Skymetry WTU 14 Manual xiv...
Page 20: ...Skymetry WTU 14 Manual 20...
Page 32: ...Figure 11 A thermistor and a 4 20mA transducer connected to the unit Skymetry WTU 14 Manual 32...
Page 48: ...Skymetry WTU 14 Manual 48...
Page 52: ...Skymetry WTU 14 Manual 52...
Page 58: ...Skymetry WTU 14 Manual 58...
Page 64: ...Skymetry WTU 14 Manual 64...
Page 82: ...Skymetry WTU 14 Manual 82...
Page 86: ...Skymetry WTU 14 Manual 86...
Page 90: ...Skymetry WTU 14 Manual 90...
Page 98: ...Skymetry WTU 14 Manual 98...
Page 100: ...Skymetry WTU 14 Manual 100...
Page 106: ...Skymetry WTU 14 Manual 106...
Page 108: ...Skymetry WTU 14 Manual 108...
Page 109: ...Test Log...
Page 110: ......