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iOptron Corp. | 6E Gill Street | Woburn, MA 01801 USA | (781) 569-0200 | Toll Free (866) 399-4587 | www.iOptron.com
5. Install Counterweight (CW) Shaft:(1) Remove CW
ShaftLockingScrew .(2)InsertCWShaftintotheCW
MountingNose.(3)ThreadintheCWShaftLocking
Screwfromtheotherside
.(4)TightentheFrontCW
PositionScrew.
CW Shaft Locking Screw
CW Mounting Nose
(1)
(2)
(3)
Front CW Position Screw
Rear CW Position Screw
[TIP:At very low latitudes (<10°), to avoid CW
bumping into tripod leg, turn the Rear CW Position
Screw (a hex head set screw) further into CW
Mounting Nose before tightening the Front CW
PositioningScrew.]
6. InstallCounterweight:RemoveCWSafetyCapatthe
end of CW Shaft.With the wider opening towards
theshaftend,guideCW throughthe shaft.Usethe
CW Locking Screw to hold the CW in place.Place
SafetyCapbackontotheshaft.
[TIP:ZEQ25comeswitha10.4lbs(4.7
kg)CW,which
should besufficient for payloadsup toabout 13lbs
(6kg).UseextraCWorCWExtensionBartobalance
higherpayloads.]
7. Balance Payload:After attaching scope and
accessories, the mount head assembly must be
balanced in both R.A. and DEC axes to ensure
minimumstressesonthemountdrivingmechanism.
CAUTION:Thetelescopemay swingfreelywhenR.A.
orDECGearSwitchisopen.Alwaysholdontothe
telescope assembly before opening
the gear
switches to prevent it from swinging, which can
causepersonalinjury and/orequipmentdamage.
TurnTensionAdjustercounterclockwisetorelievethe
contact pressure.Turn Gear SwitchKnob by 90° to
the OPEN position to disengage the worm from the
wormwheel.
[TIP:Any hesitation in turning the knob
by 90°
usuallymeansthattheTensionAdjusterhasnotbeen
loosened enough; turn the Tension Adjuster
counterclockwisebyoneormoreturnsfurther.]
Tension Adjusters
OPENLOCK
Gear Switch
CAUTION:ThebalanceprocessMUSTbe donewith
Gear Switch at OPEN position!Otherwise it might
damagethewormsystem.
With the corresponding Gear Switch in the OPEN
position,balancetheassemblyinR.A.axisby moving
CWalongitsshaft,andbalancein DECaxisbymoving
thescope
withaccessoriesbackandforth(seephotos
below).
Onlybalanceoneaxisatatime.
CW Shaft inserts into
CW mountin
g
nose.