LIMIT SWITCHES 1. Note activator wand position accurately. 2. Note mounting hole locations on bracket. 3. Remove two mounting screws and lift out switch. 4. Install new wiring, one connection at a time, following original route and placement. 5. Mount new switch only in exact same bracket holes as old switch.
6. Cycle valve; check switch actuation points carefully. Listen for switch to click, and use continuity tester. If necessary, bend wand slightly so switch makes and breaks while valve is closed. 7. Be sure valve wiring and switch action correspond exactly to the schematic and truth table shown in terminal cover and Specifications 1518/1519.
SWITCH AND COIL LOCATIONS
Covers all 1519 Valves except 1519-X.
power in L 1 , L 2 , Ground
VCS-1
VOS-2
coil
coil
power in L 1 , L 2 , Ground
FIGURE 1. Top Terminal Block
FIGURE 2. Side Terminal Block
MOTOR/OPERATOR
C
Covers all 1519 Valves except 1519-X.
1. Shut off all electrical power to valve and close upstream tight-shutoff manual valve.
D
A
2. Loosen four fillister head screws
and remove motor
A
cover
.
B
B
3. Disconnect wire leads from operator.
C
4. Loosen four round head screws
and carefully remove
D
operator.
WARNING: Do not attempt field repair of valve body, top mechanism, or motor operator. Any alterations could be dangerous, and will void all warranties.
5. Carefully align new operator, and complete installation by reversing the above procedure.
Instructions 1518/1519 Page 8
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