Teledyne 2103c installation and operation guide Hydrophobic Filter Rings

	2103 Modem Module
	Section 5 Maintenance
Silica gel	To reactivate the silica gel desiccant, pour the spent desiccant
	into a heat resistant container. Never heat the cartridge
	assembly; it will melt. Heat the silica gel in a vented convection
	oven at 212° to 350°F (100° to 175°C) for two to three hours, or
	until the blue or yellow color returns. Allow the desiccant to cool
	and store it in an airtight container until ready for use.

5.4 Hydrophobic Filter

5.5 O-Rings

If the 2103 Modem module is submerged, a hydrophobic filter prevents water from entering the desiccant cartridge. Any amount of water will plug the filter and it must be replaced so the case will be reliably ventilated.

To remove the hydrophobic filter, grasp the filter and pull it from the desiccant cartridge collar. The filter is only held in place by its friction fitting; rocking it back and forth while pulling may help. Firmly press the replacement filter (Isco P/N 60-2005-003) in place.

If the hydrophobic filter frequently requires replacement, you should consider relocating the modules so they are better pro- tected. Alternatively, replace the existing hydrophobic filter with the extension accessory package included with your unit. Follow the instructions above to remove and replace the filter. Locate the other end of the tubing in a dry location and secure it.

The communication connectors on the top and bottom of the 2103 Modem contain O-rings that need periodic lubrication and replacement. The maintenance kit described in section 3.2 con- tains O-rings and silicone lubricant.

Whenever you replace the O-rings, or have removed them from the connectors for some reason, you should lubricate the O-rings by applying lubricant around the circumference of the ring.

Note

Do not use petroleum-based lubricants. Petroleum-based lubricants will cause the O-ring to swell and eventually deterio- rate. Aerosol silicone lubricant sprays often use petroleum based propellants. If you are using an aerosol spray, allow a few minutes for the propellant to evaporate before proceeding.

5.6How to Obtain Service The internal components of the 2103 Modem are not user-ser- viceable. The case is completely sealed to protect the internal components. To repair the unit, the case must be broken open and replaced. If you think your module requires repair, contact Isco’s Technical Service Department.

Corresponding with a Teledyne Isco Technical Service Represen- tative can often resolve the problem without the need to return the item. If the difficulty cannot be resolved you will be issued a Return Authorization Number (RAN) and information on returning it to the factory.

5-3