MAINTENANCE PROCEDURES
6-4 SERHT50NA A0808
Replacement of Internal Primary Battery
1. Replace the Internal Primary Battery per Removal of Internal
Primary Battery in Section 8.
Operational Verification Procedure
Upon completion of the internal battery replacement, perform all
calibrations and Operation Verification Procedures as detailed in
Section 5.
Replacement of the Internal Secondary Battery
NOTE: To ensure the NiMH battery can supply adequate power to
the HT50 after the LOW BATTERY alarm Newport recommends the
NiMH battery to be replaced every 2 years or if the NiMH battery
no longer meets the time requirements of the user, it should be
replaced.
1. Replace the Internal Secondary Battery as per Removal of
Internal Secondary Battery in Section 8.
Operational Verification Procedure
Upon completion of the internal battery replacement, perform all
calibrations and Operation Verification Procedures as detailed in
Section 5.
10,000 HOUR MAINTENANCE PROCEDURE
Replacement of Pump Assembly
NOTE: The Pump Assembly is scheduled to be replaced every
10,000 hrs. The pump should also be replaced if it exhibits any
unusual noise or if it appears to be malfunctioning in any way.
1. Replace the Pump Assembly as per Pump Assembly
Replacement in Section 8.
Setting “Next Service Due Meter”
After replacing the pump assembly due to the 10,000 hour
maintenance or for any reason, it is necessary to properly set the
next service due meter. Set “Next Service Due Meter” per setting
“Next Service Due Meter” in Section 8.