Installation and Troubleshooting
This pressure gauge isolator kit provides increased protection for raw water system pump transducers. If your vessel is already equipped with gauge isolators, then this kit is not necessary. Validate pipe and material compatibility before installation. The isolators in this kit are intended for ¼” NPT transducers and plumbing connections. Read the included Tuff GuardTM Gauge Isolator Manual before installation. The kit contains: (2) Tuff Guard Gauge Isolators, (1) Bottle of Hydraulic Fluid
To Install:
Ensure the raw water system is in a safe mode for maintenance with seacock valves closed before starting.
Perform the following instructions for each pump transducer:
Remove the pressure transducer from the plumbing system and inspect for damage. The Isolators will not repair a broken Transducer, they will only protect working equipment.
Remove the red cap from Isolator.
Fill the upper chamber of the Gauge Isolator with Hydraulic Fluid by pouring it into the Transducer orifice to the mid-point of the female thread.
Turn the Transducer upside down and fill the Transducer chamber with Hydraulic Fluid.
Turn the Transducer right side up and screw it into the Gauge Isolator trying not to lose fluid. Hand Tighten ONLY. DO NOT use thread sealant between the Gauge Isolator and the Transducer. These treads are self-venting to ensure there is no pressure build up. The o-ring inside the Isolator will create the seal.
Connect the male end of the Gauge Isolator assembly to the original Transducer location in the plumbing system using PTFE tape.
Repeat for second Transducer.
When both Gauge Isolators are installed, double check to ensure all fittings are secure. Open the seacock valves and run system to verify that there are no leaks.
High or Low Pressure Fault
High or Low seawater pressure reading due to faulty pressure transducer
Remove the transducer from the isolator and determine if the transducer has corrosion. If so, this transducer was not replaced at the time of the installation and could be the fault causing the alarm.
Determine proper voltages on transducer plug from the OEM.
Determine if the isolation valve on the offline pump is not allowing seawater to flow through it while closed (a check valve could be installed instead of a ball valve)
Leaking Oil from Isolator
O-Ring is not in place inside isolator.
Too much oil was added during installation.
Leaking Seawater from Isolator
Not enough Teflon tape was used during installation.
Are the fittings properly threaded?
To learn more go to Transducer Protector