Ransburg 9040 Classic Power Supply _NO2 Gun 76657-14, -142 - Manual (Page 17)

CP-97-03.6
9040 Classic for the No. 2 Process Handgun - Maintenance
1 3 1 3 1 3 1 3 1 3
MAINTENANCE MAINTENANCE MAINTENANCE MAINTENANCE MAINTENANCE
ROUTINE PREVENTIVE ROUTINE PREVENTIVE ROUTINE PREVENTIVE ROUTINE PREVENTIVE ROUTINE PREVENTIVE
MAINTENANCE MAINTENANCE MAINTENANCE MAINTENANCE MAINTENANCE
In general, little maintenance is necessary to
ensure proper operation. It is important, how-
ever, to keep the interior of the unit clean and
free from moisture or foreign material. For this
reason:
1. Keep the exterior of the unit free from
dust accumulation.
2. Always clean the exterior prior to open-
ing the cabinet door.
3. Open the cabinet door only to perform
maintenance or repair.
4. If the power supply end of the high volt-
age cable becomes dirty, clean the end
of the cable with a suitable, clean, non-
polar solvent and apply a light coat of
dielectric grease. On a yearly basis,
check to ensure that the dielectric oil
(70863-00) is covering the electrical
contact point in the High Voltage Tube.
If not, add oil as needed.
5. Perform a Current Output (SCI) Test ap-
proximately every 50 hours of high volt-
age operation.
! Squirting dielectric oil (70863-00) down
the HV Tube significantly reduces corona
discharge that can cause deterioration of
the HV connection components.
N O T E N O T E N O T E N O T E N O T E
! Never immerse any part of, or all of an
assembled applicator in any liquid.
C A U T I O N C A U T I O N C A U T I O N C A U T I O N C A U T I O N
!!!!!
TROUBLESHOOTING TROUBLESHOOTING TROUBLESHOOTING TROUBLESHOOTING TROUBLESHOOTING
PC Board T PC Board T PC Board T PC Board T PC Board Test Jumper est Jumper est Jumper est Jumper est Jumper
To assist in testing and troubleshooting, a
jumper (JP4) has been incorporated on the
9040 PC Board. By covering (shorting) both
terminals the high voltage on relay is triggered.
Thus, for testing and troubleshooting, high volt-
age output can be obtained without the need to
trigger the spray gun or user supplied control
device. Just remember to reposition the jumper
after testing, so that it covers only one terminal
(open) or the high voltage will stay on all the
time (see Figure 7 for location of test jumper
JP4).
! If JP4 is left covering (shorting) both
terminals, high voltage will be on whenever
AC power is turned on. This could be
hazardous in some applications.
C A U T I O N C A U T I O N C A U T I O N C A U T I O N C A U T I O N
!!!!!
Ground T Ground T Ground T Ground T Ground Test Procedure est Procedure est Procedure est Procedure est Procedure
Equipment Required: Equipment Required: Equipment Required: Equipment Required: Equipment Required:
Ohmmeter - To Measure Resistance
If shocks or sparks are noticed at any point in
the spray system, immediately turn off the
power supply and check the complete system
for proper grounding. Proper grounding of the
spray gun system can be verified as follows:
1. Ensure that the clamp of the 14 AWG
Ground Wire Assembly is connected to
true earth ground. The resistance be-
tween the clamp and a known earth
ground should read less than 25 ohms.
2. Place one end of the ohmmeter on the
clamp of the Ground Wire Assembly and
the other end on the Power Supply
ground stud. If the ohmeter reads
greater than 25 ohms, replace the 14
AWG Ground Wire Assembly.