Universal Corner Mounts - Fitting Instructions
Fixing the Panel to the Mounts
You can attach the solar panel frame to the mounts with adhesive or by using the stainless steel M4 machine screws, nuts, and washers provided.
Clearance holes (4.5mm, 11/64”, or imperial #16) can be drilled in the recessed ports of the mounts, and through into the frame. (Don’t forget to clean the burr from the back of the panel frame.)
A hole centred 7 mm up from the bottom of the port will exit at the centre of the flange in which the panel frame sits.
You may prefer to use stainless steel self-tapping screws, in which case we would recommend using no. 8 x 25 mm.
The same clearance holes can be used but be careful to use the correct tap drill size for the Aluminium frame (usually imperial tap drill #29 or 3.5mm).
Bonding the Mounts to the Substrate
Bonding the mounts and gland casing to a variety of surfaces, e.g. metals, timber, plastics (and FRP*), can be achieved using Sikaflex 512 -Caravan, (or Sikaflex 252). These are high quality, polyurethane based, weather resistant sealants and adhesives.
To obtain a reliable and permanent bond the manufacturer’s instructions must be followed carefully. The surfaces must be clean, dry and free from all traces of grease, oil, and dust.
THE SUBSTRATE SHOULD BE SANDED, FINISHED WITH THE FINE ABRASIVE PAPER, BRUSHED, AND THEN CLEANED WITH A SUITABLE SOLVENT.
(Do not apply solvents such as acetone, carbon tetrachloride, or aromatic hydrocarbons to ABS. Use only alcohol based solvents.)
For best results with Sikaflex512 use Sika Cleaner/Aktivator-205 on FRP* and ABS.
(For the highest strength, absolutely permanent bond use Sikaflex 252 Structural Adhesive, and follow the manufacturer’s instructions for pre-treatment, as before.)
Attach the mounts to the solar panel first, position the panel and then mark out the areas on the mounting surface for pre-treatment. Allow sufficient time for any pre-treatments to dry before applying the bonding adhesive.
After applying the adhesive, leave the panel under cover for 2 days for the bond to cure before proceeding further.
Bonding the Gland Casing to the Substrate
Mark out the area for attaching the gland casing, drill the cable holes, and then clean and pre-treat the surfaces as described in the Sika Pre-Treatment Chart.
Slide the gland components loosely along the cables and then feed the cables through the threaded holes in the casing and through the roof holes before bonding the gland casing to the surface.
Do not move the cables or tighten up the glands until the bond has cured (allow at least 24 h, preferably 2 days for a 3mm thick layer).
*Glass Fibre Reinforced Plastics, usually unsaturated polyesters on caravans.