Microswitch Adjustment; Cordset Replacement - Nordson A-1 Series Manual

Handgun
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A-l HANDGUN
MICROSWITCH ADJUSTMENT
MANUAL NO. 26-4
Page 7-5
Numbers in parenthesis refer to Figure 7-3.
1. Disconnect MS connector from gun cordset.
Note: The setscrew must be adjusted to achieve an open circuit (trig-
ger disengaged) and a closed circuit (trigger engaged). Some trial
and error is required to achieve both conditions.
2. Use a multimeter to check for an open circuit across cordset connec-
tor pins F and G (see Figure 6-l) with trigger disengaged. If an open
circuit does not exist:
a. Insert allen wrench (supplied with gun) into setscrew (4).
b. Rotate the setscrew clockwise until an open circuit is obtained.
3. Use a multimeter to check for an closed circuit across cordset connec-
tor pins F and G with trigger engaged. If a closed circuit does not
exist:
a. Insert allen wrench into setscrew (4).
b. Rotate setscrew counterclockwise until a closed circuit is ob-
tained.
4. Recheck for open and closed circuits, repeat procedure if necessary,
until properly adjusted.
CORDSET REPLACEMENT
1. Remove screws and lockwashers securing warning plate to handle
and disconnect wires from terminal strip, ground, and switch.
2. Remove screw securing cordset to handle and remove cordset. If gun
is bottom feed version, tie a line around cordset wires before pulling
through handle. Line through handle will aid in pulling new cordset
wires through handle.
3. Feed cordset wires through top or bottom of handle and connect ac-
cording to wiring diagram (Figure S-l) to terminal block, gun
ground, and switch.
4. Secure cordset to handle with screw removed in Step 2. Install warn-
ing plate on handle with screws and lockwashers.
Publication P/N 108 061
0 NORDSON CORPORATION 1993
All Rights Reserved
Issued 3193

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