Sonardyne 8221 HPT - Section 7 - Maintenance; Dismantling; Retrieval from the Water; Cleaning

Type 8221, 8212, 8142 & 8091 HPT
Type 8182 HPT Modems
HPT Variants
UM-8142
Issue B Rev 1
Section 7 – Maintenance 43
Section 7 – Maintenance
Before any maintenance activity is carried out, make sure Section 2 – Safety is read and fully
understood.
7.1 Dismantling
Dismantling of the USBL transceiver must only be carried out by Sonardyne qualified personnel.
7.2 Retrieval from the Water
See Section 6 – Retrieval and Storage.
7.3 Cleaning
Note
Do not use any abrasive brushes or sharp tools to remove marine growth when cleaning the
instrument as this will damage the protective coating and increase the risk of corrosion.
1. Thoroughly wash the USBL transceiver in warm clean fresh water to remove accumulations
of salt, sand or silt, paying particular attention to electrical connectors.
2. Remove any attached cabling or dummy plugs and wash the external socket.
3. Dry the USBL transceiver and any attached cabling with a clean lint free cloth.
4. Replace any dummy plugs and protective caps.
5. Clean the inside of the protective boot and place onto the USBL transceiver.
7.4 Inspection
Inspect the USBL transceiver for the following:
1. Inspect the housing for signs of corrosion or damage. If any corrosion is found, see Section
7.7 “Corrosion Removal”.
2. Inspect the connectors and cables for signs of abrasion, damage or corrosion.
3. Check the security of the connector by fitting the locking sleeve from the mating half of the
connector, and check for movement. Any movement will require attention and the connector
to be secured.
7.5 Lubrication
Note
See Warnings and Cautions in Section 2 – Safety “Hazardous Substance” and “Damage to
Connectors”.
7.5.1 Connectors
1. Make sure the connectors are clean and dry. Accumulation of sand or silt must be removed
with clean fresh water and then dried thoroughly.
2. Using the manufacturer’s recommended lubricant “Molykote 44 Medium”, apply a sparing
amount across the connector face using a clean finger. This will allow a small amount of
grease to enter the connector as the faces are mated.