Metso Neles Quartz LIMIT SWITCH, Installation Maintenance And Operating Instructions

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7 QZ 70 en 7
II. For Normally Closed Function, Fig. 7
1. With the valve in the closed position, set both cams
so that the metal activation strips are aligned with
each other and set in the middle of the sensor tar-
gets.
2. If the valve turns counter-clockwise to open, pull up
on the bottom cam and rotate clockwise until the red
LED goes "out". (If the valve turns clockwise to open,
rotate bottom cam counter-clockwise until it goes
out.)
3. Operate the valve to the opposite position (Open).
Push down on the top cam. If the green LED is "off",
rotate top cam clockwise until it comes "on". When
the green LED is "on" turn cam counter-clockwise
until the green LED just goes "off".
For the normally closed operation, both the red and
green LEDs will be illuminated during the actuation
period. The red LED is off in the “Closed” position and
the green LED is off in the “Open” position. If the
optional green "Closed" visual indicator is used the col-
ors would be reversed in I and II.
Types E, F
I. For Normally Open Function, Fig. 8
1. With the valve in the "Closed" position and if the
valve turns counter-clockwise to open, set both
cams so that the metal activation strips are 180°
from each other with the bottom cam set in the mid-
dle of the sensor target. Connect test equipment to
bottom switch as per Bench Test Procedure.
2. Lift the bottom cam and turn counter-clockwise until
the voltmeter reads 0 V DC then clockwise again
until the voltmeter just reads >20 V DC. (Reverse the
direction of the cam if the valve opens clockwise.)
3. Move the valve to the opposite position (Open), con-
nect test equipment to top switch. Push down on the
top cam and rotate counter-clockwise until the volt-
meter just reads >20 V DC. (Reverse the direction of
the cam if the valve opens clockwise.)
For the normally open operation, both sensors will be
off during the actuation period.
II. For Normally Closed Function, Fig. 9
1. With the valve in the closed position, set both cams
so that the metal activation strips are aligned with
each other and set in the middle of the sensor tar-
gets. Connect test equipment to bottom switch as
per Bench Test Procedure.
2. If the valve turns counter-clockwise to open, pull up
on the bottom cam and rotate clockwise until the
voltmeter just reads 0 V DC. (If the valve turns clock-
wise to open, rotate bottom cam counter-clockwise
until the voltmeter reads 0 V DC)
3. Operate the valve to the opposite position (Open).
Connect test equipment to top switch. Push down
on the top cam. If the voltmeter reads 0 V DC, rotate
top cam clockwise until it reads >20 V DC. With the
voltmeter reading >20 V DC rotate cam counter-
clockwise until the voltmeter just reads 0 V DC.
For the normally closed operation, both sensors will be
activated during the actuation period.
Types P, L, G, H, S
1. Lift bottom cam and rotate until sensor is activated.
(White highlight will be next to sensor.) Release cam
and be sure it slides fully onto spline.
2. Operate actuator to opposite position, push down
on top cam and repeat process.
Types V, W, 14
1. Lift bottom cam and rotate until switch is activated.
Release cam and be sure it slides fully onto spline.
2. Operate actuator to opposite position, push down
on top cam and repeat process.
Fig. 7 Cams Set for Normally Closed Sensor Function
Fig. 8 Cams Set for Normally Open Function
Fig. 9 Cams Set for Normally Closed Function