10
Fig. 7 Diagram of the bolt installation process
①
Place the PV module on top of the rack.
②
Insert 4 stainless steel bolts in corresponding
mounting holes. The 9x14mm mounting holes
match with M8 bolts, while the 7x10mm mounting
holes match with M6 bolts. 7x10mm mounting
holes are positioned with a hole pitch of 400mm.
③
Make sure to use two stainless steel washers for
each bolt, one on each side of the rack. Then screw
on the top of a stainless-steel spring washer or
toothed lock washer. Finally, lock with a
stainless-steel nut.
④
The tightening torque is recommended to be
9~12Nm for M6 bolts and 17~23Nm for M8 bolts.
Due to the possible difference of bolt material, the
specific torque value is subject to the information
confirmed by the bolt supplier.
5.3.2
Clamped mounting
Photovoltaic modules can be installed across the
support frame (Fig. 8) or parallel to the frame of the
photovoltaic module (Fig. 9). When using clamps to
install, each module must be secured with a minimum
of 4 clamps.
Fig. 8 Rails overlapping the long-side frame
Fig. 9 Rails overlapping the short-side frame
！
ATTENTION
：
The length of the rack must be longer than the PV
module, otherwise it should be confirmed by Chint
Solar in advance.
The above two diagrams show the mounting
method using aluminum clamps. "D" indicates the
mounting range. Table 1 shows the recommended
mounting position and corresponding machine
loads.
Each aluminum clamp is equipped with an M8 bolt,
a flat washer, a spring washer and an M8 nut. The
mounting steps are as follows:
：
①
Place the module on the two supporting rails (not
provided by Chint) which should be made with
stainless material and treated with an anti-corrosion
process (e.g. hot dipped galvanizing). Each PV
module needs at least four clamps to be fixed. The
module clamps should not come into contact with
