Hydran* 201i Instruction Manual
MA-033 Rev. 14.0, 12-Nov-18
7.5 Fastening the Hydran 201Ti’s Cover
Replace the H201Ti’s aluminum cover as soon as the installation is completed.
1. Ensure the rubber washer is present on the central post.
2. Slide the cover over the H201Ti.
3. Fasten the cover by tightening the knob. The breathing membrane must be
facing down (at the “6 o’clock” position) if the H201Ti is installed horizontally.
If connected to a Hydran 201Ci Controller, the H201Ti will later be used to test this
Controller.
When installing the cover, the knob must be tightened
correctly. After the knob touches the cover, a minimum of two
(2) more turns must be applied. Failure to do so may result in
water ingress inside the enclosure.
7.6 Commissioning
1. Wait at least two hours for the Hydran 201Ti to stabilize. The Hydran 201Ci
Controller(s) can be installed during this time.
2. Verify the H201Ti’s accuracy by comparing its readings with a recent dissolved
gas analysis (DGA).
3. If necessary and with the permission of the user, set the alarm set points again,
this time according to the current level of dissolved gases in oil. See Section
11.4.1.
The installation of the H201Ti is now completed. If properly installed and maintained,
the H201Ti provides many years of trouble-free service.
7.7 Other Installations
To install other components of the Hydran 201i System, please consult the following
parts of this manual:
• Hydran 201Ci-C: See Chapter 8.
• Hydran 201Ci-1: See Chapter 9.
• Local network: See Section 10.5.
• Optional modem: See 10.6.
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