www.h2flow.net
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Tel: 888-635-0296 (Toll Free)
OR
(+1) 419-841-7774 (International)
7
installation cont.
6.2. Installing AcuFlow Digital to an existing (pre- January 2021) 3”(DN80) or 4” (DN100) AcuFlow
1. Remove the screws from the existing lid of the AcuFlow unit and remove the lid assembly.
2. It is not uncommon for the AcuFlow lid to be retained by a vacuum
suction after the 8 screws have been removed.
Under no circumstances
should you try to leverage the lid off with a screwdriver or similar
device.
Instead, momentarily open a valve that is either upstream or
downstream to release the vacuum.
3. Ensure that the new lid assembly has a code on the side of the lid that
is equal to or greater than HT16. For example HT16 is greater (later) than
HT15.
4. Ensure that the o-ring on the underside of the new lid assembly is
undamaged, lubricated with silicone (such as Boss 820), and is in-place
without twists.
5. Carefully lower the lid onto the Tee, making sure that the o-ring stays in
place. Also make sure that its orientation is correct; the top of the AcuFlow
scale should be toward the direction of flow.
6. Referring to Fig.2.4 (right), identify the required side of the AcuFlow to mount
the AcuFlow sensor to, ensuring that the sensor is fully seated and the screw
holes line-up with those on the AcuFlow lid assembly.
7. Place 6 of the 8 AcuFlow screws in the lid assembly, and use the 2 longer
screws provided with your AcuFlow Digital (Fig.1.3 on page 4) in the holes
for the sensor. Do not tighten.
8. Using a hand Phillips-head screwdriver, slowly tighten the screws in a
diagonal pattern, per the diagonal sequence shown in Fig.2.5. Do not fully
tighten one screw before proceeding to the next, i.e., pull them down slowly
multiple times to avoid stressing and cracking the lid. Screws should be
tightened to a final torque of 25 in./lbs. or 2.8 Nm.
Disclaimer:
Under no
circumstances should the screws in the AcuFlow lid assembly or sensor be
tightened with an electric screwdriver in the ‘drill’ setting. This can result in
a cracked lid or sensor and will void the product warranty.
9. Proceed to section 6.3 to complete the installation of your AcuFlow Digital.
Fig 2.4
1
2
3
5
4
6
7
8
Fig 2.5
