Setting The Rotor To Initial Grade; Setting The Rotor To Final Grade - Hunter STK-1 Instrucciones De Instalación

INSTallaTIoN INSTruCTIoNS for huNTEr STK-2

Setting the rotor to Initial Grade

It is recommended that the rotor be set to grade in two phases.
First an initial setting with a partial back-filling of gravel and then,
the final setting to grade later. Why? History has shown that
the enclosures are set to their grade prior to the final filling and
compaction of the surrounding surface outside of the enclosure.
The compacting process with large vibratory rollers can shift the
enclosures slightly. To avoid having to go back in and excavate
gravel within the enclosure in order to re-set the rotor grade, it
is best to set the rotor's final position only after the surrounding
surface has been leveled, compacted and is ready for the carpet
and carpet sub-base cushion material.
Setting the rotor to grade is a two-person to three-person
operation. One person needs to hold the rotor in position at the
proper level within the enclosure cover while a second holds
the swing joint assembly in position. The articulating swing joint
provides the means to set the rotor perfectly to grade so it must be
manipulated as the enclosure is back-filled. The third person does
the back-filling of the supporting material (gravel). Two people can
accomplish the task but it is faster with three.
To start the process of setting the rotor to grade, first find the
enclosure half-cover with the hole for the rotor and install it into
position on the enclosure. Now pull the rotor up into position within
the hole. If the riser assembly is pulled up, the rotor can be held in
this position during the back-fill process by hand. Or, the riser can
be held up with a tool such as the Hunter wrench (PN 461720), the
T-Handle tool (included in rotor box PN 319100), the Snap Ring Tool
(PN 052510) or a fabricated tool such a screw driver with a screw
from the rotor's logo cap welded to the tip.
20
Route the controller station cables such that they can be pulled
up into the sleeve for the control valve. With the rotor held within
the enclosure cover by one person and the swing joint held by
another person such to make the rotor flush to the cover, start the
back-filling of the enclosure. Fill gravel evenly and only enough to
support the swing joint and rotor in this initial setting (to a level
just below the STVBVFK assembly). Back-filling the gravel during
this phase will also serve to help support the enclosure's sidewalls
during the heavy equipment compaction process of the surrounding
surface.

Setting the rotor to final Grade

Prior to setting the final grade of the rotor, it is best to make the
sleeves for the ball-valve and control-valve. The ball-valve sleeve
is cut from a 6' pipe and the control-valve sleeve is cut from an 8"
pipe. The overall height of both sleeves should be no taller than
11" tall (excess height limits access to the control valve with the
ENG