HYDROCAL 1005 Manual for Installation and Operation
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2.2
Security precautions for installation
The following security precautions must be strictly observed during the installation. Otherwise no
warranty claims will be accepted.
Never remove the protection cap from the sensor before you are ready to
mount the unit on the valve of the transformer.
The protection cap protects the sensor against dust and other foreign bodies.
Additionally it protects the thread of the measuring head and/or adapters.
Note: Use the protection cap also after dismounting of the unit.
Never close the aeration holes for oxygenation. They are situated in bot-
tom side of the protection cover and at the back plate of the device
Never use or stock chemicals with hydrocarbon contents near the meas-
uring sensor.
Never clean the measuring head with solvents, because its gases will strongly
impair the measuring accuracy and the sensitivity of the sensors.
Never apply a negative pressure to the measuring head.
Negative pressure can cause problem during filling process.
Remove the HYDROCAL1005 unit from the valve every time you degas or
refill the transformer. You can also close the valve of the transformer
Never install the HYDROCAL unit on a valve that is closed for a long pe-
riod of time. Remove the unit if this cannot be avoided. Please refer to
De-installation instructions
Never install the HYDROCAL1005 on the suction side of the cooling
pump!
The HYDROCAL 1005 should be installed on positions located 100 cm be-
low of the oil level inside the transformer
Never install the HYDROCAL1005 unit on an elbow or curve of a tube.
The unit cannot operate by negative pressure produced by turbulences in
curves.
