User's Manual

GunSetup
Check Check
Check
Gun Gun
Gun
Electrical Electrical
Electrical
Grounding Grounding
Grounding
MegohmmeterPartNo.241079(AA-seeFig.
21)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,page31.The
uidhosemustnothaveanyuidinit.
4.Disconnecttheuidhose.
5.Makesurethered-coloredgroundedairhose
(AH)isconnectedandthehosegroundwireis
connectedtoatrueearthground.
6.Measuretheresistancebetweenthegunhandle
(BB)andatrueearthground(CC).Usean
appliedvoltageof500minimumto1000volts
maximum.Theresistanceshouldnotexceed
100ohms.SeeFig.22.
7.Iftheresistanceisgreaterthan100ohms,check
thetightnessofthegroundconnectionsandbe
suretheairhosegroundwireisconnectedtoa
trueearthground.Iftheresistanceisstilltoo
high,replacetheairhose.
Figure22CheckGunElectricalGrounding
28 3A2496D