Alpha Technologies AlphaGen PN-6x-T 7.5kW 48VDC - Installation and Operation Manual - Manual (Page 29)

745-020-B0-003, Rev. C 29
Fig. 3-4, Pad Shear Sensor/Magnet Assembly
(in inches)
3. The pad shear sensor is located in the left hand corner of the enclosure from the rear
door. To install, locate the loose magnet (located in a plastic bag included with the
enclosure). Remove the two screws holding the sensor into place, and lift out. Using a
silicone based glue, glue the loose magnet to the pad in the center of the hole. After the
glue has set, install the sensor face down with the two Phillips screws so it contacts the
glued down magnet.
If a pedestal is used, relocate the pad shear sensor to the L-bracket located near the
bottom of the pedestal. Glue the pad shear magnet directly below the sensor. Use
the extender cable to connect the pad shear sensor wires to the wires located in the
generator enclosure (route wires through pad shear sensor hole in the fl oor of the
generator enclosure).
3.0 Installation, continued
3.3 Enclosure Installation Procedure
1 Position the enclosure above the concrete pad and slowly lower it into position over the
pad’s 3/8" (or 1/2") anchor or J-bolts. A 25+ year vapor barrier MUST be used between
the concrete and enclosure base to inhibit moisture ingress, and to prevent possible
corrosion caused by metal to concrete contact. The vapor barrier material (such as Alpha
P/N 564-721-10) should initially extend at least 1/2" in all directions around the perimeter
of the enclosure. After the enclosure is in place, the material should be cut closer to the
enclosure, using the appropriate knife or cutting tool.
2. Secure the enclosure using customer-supplied stainless, galvanized (or better), fl at
washers, lock washers and 3/8" (or 1/2") nuts at each mounting bolt. Torque mounting
hardware in accordance with manufacturers’ ratings.
The pad shear sensor is a safety feature that MUST be correctly installed before connecting
the gas utility. This is a CRITICAL safety feature required to disable the generator in the
event of automobile impact, seismic, or other unforeseen catastrophic event.
To prevent damage to the enclosure, it must be mounted fl ush to a completely fl at surface. If the
concrete pad is uneven or has bumps, cracks or other imperfections, the installer is responsible for
correcting these defects prior to installing the enclosure.
ENCLOSURE
FRONT 0.25
3.00
5.35
5.60
0.581
3.40
CAUTION!
WARNING!