Repair
5-4
Part 1105779-04
E 2014 Nordson Corporation
Proportional Valve Replacement
If cleaning the proportional valve does not correct the flow problem then
replace the valve. Remove the valve by performing steps 1 and 2 of
Proportional Valve Cleaning.
Before installing a new valve, remove the protective cover from the bottom
of the valve body. Be careful to not lose the O-rings under the cover.
Gun Air Solenoid Valve Replacement
See Figure 5-1. To remove the gun air solenoid valves (8), remove the two
screws in the valve body and lift the valve off the manifold.
Make sure the O-rings furnished with the new valve are in place before
installing the new valve on the manifold.
Gun Control Card Removal/Installation
Replacing a Gun Control Card
WARNING: Do not remove gun control cards from the card cage while they
are powered. Either shut off console power or shut off the booth exhaust
fan so that the interlock will remove power from the gun control cards.
Failure to observe this warning could result in damage to the cards.
CAUTION: Do not turn off console power without first performing a program
shutdown. Doing so could corrupt the iControl program and operating
system on the program card. Refer to Program Shutdown in the
Configuration section of the iControl Operator Interface manual for the
shutdown procedure.
CAUTION: The gun control cards are electrostatic sensitive devices (ESD).
To prevent damage to the cards when handling them, wear a grounding
wrist strap connected to the iControl enclosure or other ground. Handle the
cards only by their top and bottom edges.
See Figure 5-2. Gun control cards (2) are installed in the card cage from
left to right. Each card controls two guns: the bottom receptacle is the odd
gun number; the top receptacle is the even gun number.
To remove a card, disconnect the gun harness connectors (3 and 4), pull
down the locking tab (5), then pull the card out of the card cage.
To install a new card, slide the card into the slots in the card cage and seat
the card’s finger board firmly into the connector slot on the backplane (6).
Push the locking tab up to lock the card into the card cage. Connect the
gun harness to the two receptacles on the card.
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