Buhnen HB 710 - Troubleshooting

9
5.2 Troubleshooting
Fault Possible cause Remedy See Section
Controllercannotbeswitched
onoroff
Microswitchattrigger
continuouslyactivatedor
defective
Eliminatedeadlockatmicro
switch(sheetmetaltongue)
orreplacemicroswitch
Nozzlegoesondripping Nozzlevalvepartiallyob-
structedordamaged
Drainthedevice.Actuate
thetriggerforapprox.5sto
clearthenozzle.
HB710:
Cleanorreplacenozzleend
HB 710 Spray:
Cleanorreplaceswirl
nozzle,pressurespringand
ball
6.2
Toolittleornomeltisdis-
charged
Operatingpressuretoolow Increaseoperatingpressure
(max.687psi/bar)
4.3
Compressed-airsupply
disconnected
Checkcompressed-airsup-
ply
Nozzlesystemclogged HB710:
Cleanorreplacecone
nozzleandifnecessary
nozzleend
HB 710 Spray:
Cleanorreplaceswirl
nozzle,pressurespringand
ball
6.2,6.3
Stocktemperaturetoolow Raisetemperature 3.3.1
Compressedairescapesfrom
closurecap(11)
Insufcientcoverpressure Increasecoverpressure 6.4
Gasketdirty Cleansealingfaces
Compressedairescapesfrom
serviceunit
Connectionsnotairtight Tightenorreplacegaskets
Sightglassofwatersepa-
rator(2)cracked
Replacesightglass
HB 710 Spray only
Spraypatternnotideal Spraypatternwronglyset Adjustsprayair 4.4
Nozzlesystemcloggedor
damaged
Cleanorreplaceswirl
nozzle,pressurespringand
ball
6.3.4
What, if…