Ransburg MGS Multi-Gun Source 76789, 77046 - Manual (Page 17)

CP-99-01
MGS Multi-Gun Source - Maintenance
In general, little maintenance is necessary to
insure proper operation. It is important, however,
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 ac-
cumulation.
2. Always clean the exterior prior to opening the
cabinet door.
3. Open the cabinet door only to perform mainten-
ance or repair.
4. For MGS 2000C control units, if the High Vol-
tage Module end of the high voltage cable be-
comes 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
(Ransburg P/N 70863-00) is covering the
electrical contact point in the high voltage tube.
If not, add oil as needed.
If shocks or sparks are noticed at any point in the
spray system, immediately turn off the MGS unit
and check the complete system for proper
grounding. Proper grounding of the spraygun
system can be verified as follows:
MAINTENANCE MAINTENANCE MAINTENANCE MAINTENANCE MAINTENANCE
ROUTINE PREVENTIVE ROUTINE PREVENTIVE ROUTINE PREVENTIVE ROUTINE PREVENTIVE ROUTINE PREVENTIVE
MAINTENANCE MAINTENANCE MAINTENANCE MAINTENANCE MAINTENANCE
N O T E N O T E N O T E N O T E N O T E
> Squirting 70863-00 dielectric oil down
the HV tube significantly reduces corona
discharge that can cause deterioration
of the HV connection components.
GROUND TEST GROUND TEST GROUND TEST GROUND TEST GROUND TEST
PROCEDURE PROCEDURE PROCEDURE PROCEDURE PROCEDURE
Equipment Required: Equipment Required: Equipment Required: Equipment Required: Equipment Required:
Ohmeter - To Measure Resistance Ohmeter - To Measure Resistance Ohmeter - To Measure Resistance Ohmeter - To Measure Resistance Ohmeter - To Measure Resistance
1. Ensure that the clamps of all Ground Wire As-
semblies are connected to true earth ground.
The resistance between the clamp and a
known earth ground should be less than 25
ohms.
2. Place one lead of an ohmmeter on the clamp of
the MGS control unit's Ground Wire Assembly
and the other lead on the MGS unit ground
stud. If the ohmmeter reads greater than 25
ohms, replace the control unit's Ground Wire
Assembly. For MGS 2000C control units, re-
peat this measurement for the Ground Wire
Assembly connected to each High Voltage
Module.
3. Disconnect the Low Voltage Cable from the
MGS unit and connect one lead of the ohm-
meter to the MGS unit ground stud and the
other to the center pin of the low voltage cable
socket on the MGS unit. If the ohmmeter
reads greater than 25 ohms, repair the internal
connections between these points (green
wires from ground stud to center pins of low
voltage cable sockets). Repeat this test for
each low voltage cable socket.
For MGS 2001 Only: For MGS 2001 Only: For MGS 2001 Only: For MGS 2001 Only: For MGS 2001 Only:
4. Connect one lead of the ohmmeter to the
center pin of the connector on the low vol-
tage cable and the other to the metal handle
bracket on the spraygun. If the ohmmeter
reads greater than 25 ohms, replace the low
voltage cable. (See following Note BEFORE
replacing cable).
For MGS 2000C Only: For MGS 2000C Only: For MGS 2000C Only: For MGS 2000C Only: For MGS 2000C Only:
5. Connect one lead of the ohmmeter to the
high voltage module ground stud and the oth-
er to the metal handle bracket on the spray-
gun. If the ohmmeter reads greater than 25
ohms, relace the high voltage cable. (See
following Note BEFORE replacing cable).
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