GunSetup
Check Check
CheckGun GunGunElectrical ElectricalElectricalGrounding GroundingGrounding
MegohmmeterPartNo.241079(AA-seeFig.
16)isnotapprovedforuseinahazardousarea.
Toreducetheriskofsparking,donotusethe
megohmmetertocheckelectricalgrounding
unless:
•Thegunhasbeenremovedfromthehazardous
area;
•Orallsprayingdevicesinthehazardousarea
areturnedoff,ventilationfansinthehazardous
areaareoperating,andtherearenoammable
vaporsinthearea(suchasopensolvent
containersorfumesfromspraying).
Failuretofollowthiswarningcouldcausere,
explosion,andelectricshockandresultinserious
injuryandpropertydamage.
GracoPartNo.241079Megohmmeterisavailable
asanaccessorytocheckthatthegunisproperly
grounded.
1.Haveaqualiedelectricianchecktheelectrical
groundingcontinuityofthespraygunandair
hose.
2.TurnOFF(O)theESOn-Offswitch.
3.Turnofftheairanduidsupplytothegun.Follow
thePressureReliefProcedure,page27.
4.Disconnecttheuidhose.
5.Makesurethegroundedairhose(AH)is
connectedandthehosegroundwireis
connectedtoatrueearthground.
6.Measuretheresistancebetweenthegunhandle
(BB)andatrueearthground(CC).Usean
appliedvoltageof500minimumto1000volts
maximum.Theresistanceshouldnotexceed1
megohm.SeeFig.16.
7.Iftheresistanceisgreaterthan1megohm,check
thetightnessofthegroundconnectionsandbe
suretheairhosegroundwireisconnectedtoa
trueearthground.Iftheresistanceisstilltoo
high,replacetheairhose.
Figure16CheckGunElectricalGrounding
3A2494D 25