Primus Wind Power AIR 40 Owner's Manual page 48

AIR Silent X – Multi-Color BLADE INSTALL GUIDE (Part #: 2-ARBR-103), SAFETY NOTES AND TIPS
SAFETY: Wind turbine blades spin at a potentially dangerous speed.
This must be respected. Danger - Never approach a turbine in motion.
Utilize the stop-switch to shut down turbine and exercise caution as
blade edges are sharp
and pose a safety hazard.
Affixing Blades:
1.) When attaching the blades, one should be aware of the torque
applied to the screws. Blade edges are sharp – exercise caution.
When tightening the screws, it is important not to over-torque as the
blades may crack along the screw hole due to the rigid material of the
blades. Cracking can allow water to penetrate into the blade over time
and remain in the blade cavity causing a weight difference. A differ-
ence in blade weights will result in one blade falling consistently to the
bottom of the turbine and vibration, uneven operation may occur or
potential danger of blade failure. You can easily check this by putting
the blades under water for a few hours and then check the weight
again. If the weight increases, this indicates cracking has occurred and
the blade is damaged. The AIR user manual gives detailed instruc-
tions on installing the blades: Once the mast is mounted you can start
the relatively simple installation of the Silent Blades. First connect
the 3 blades to the assembly hub (see below images) with the en-
closed screws and washers).
Helpful Links for Blade, Nose Cone and Hub install:
www.primuswndpower.com
info@primuswindpower.com
(303) 242-5820 Primus Support
Under: Support tab – Service and Repair
AIR 40, AIR Breeze, AIR 30, AIR X MARINE and AIR SILENT-X are trademarks of Primus Wind Power 2013 Primus Wind Power Inc.
APPENDINIX: B
(Affixing Blades—continued):
The recommended torque on the screws is 7-8 Nm (62-71 in-lbs.). This is equiv-
alent to a weight of 7-8 kg (15.432-17.637 lbs.) on a 10 cm (3.94 in) long lever
arm, applied perpendicular to the lever arm. If the fastening torque is too high,
this will destroy or damage the blades. Warning - If the fastening torque is not
high enough, the blades can become lose. If you do not have access to a
torque wrench it is best to tighten until there is no side to side movement of
the blade a sort of "feel" that the assembly is secure. Incorrect fastening and
torque is a considerable safety risk for danger of blade failure.
Blade Weight range:
2.) Blades are matched in sets by the factory based on each blade's weight
resulting in a set of blades with a maximum weight difference of 0.5 g (.0176
oz.) between each blade. Should multiple sets be at a location and mistakenly
mixed, there is a possibility of a weight difference resulting in unbalanced sets
(it is important to keep spare blades in the originally supplied packaging and
recording the S/N of blades sold).
New Advanced HUB
3.) A new advanced hub design allows for the blades to be slipped into the
hub with very little movement. This new hub eliminates the need to any tip to
tip measurements of the blade. Included with each blade set is a washer for
behind hub and rotor shaft. This washer is an optional install and only should
be used if there is rubbing from hub to AIR turbine Face that impedes free
movement of rotor hub. Most AIR installs will not require this washer.NOTE:
always apply the included Tef-Gel using applicator to all bolts /hardware.
AIR Owner's Manual 3-CMLT-2020-A 48