Ametek Z-tron IV, Installation And Operating Instructions Manual

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14
Z-tron IV
TM
Point Level Control
Section 3: Operation
This section describes the operating switches of the Z-tron
IV level control. Remove the dome lid and use a small
screwdriver to set the operating controls.
The green LED (on) indicates power is applied to the unit.
3.1 Setpoint Control
There is a single operating point adjustment used to control
the level at which the relay operates. See Figure 3-1.
This adjustment is an 20-turn potentiometer and does
not have a mechanical stop. When in High Level Fail
Safe condition, if the red light (LED) is OFF - turn
CCW to find SP (relay changes state w/click & light
turns ON)... turn CW if red light (LED) is initially ON.
In Low Level Fail Safe turn the setpoint adjustment in
the opposite direction.
• Turning the setpoint adjustment clockwise (CW) raises
the level at which the relay operates.
• Turning the setpoint counterclockwise (CCW) lowers the
level at which the relay operates.
• The red LED (on) indicates that the relay is de-
energized and the unit is in the alarm condition.
Figure 3-1
Z-tron IV Operating Controls and LED
Fail Safe Selector Switch
(Up= High Level Fail Safe Down= Low Level Fail Safe)
Time Delay Selector Switch
(Up= Forward Acting Down= Reverse Acting)
Setpoint Adjustment
(Clockwise Increases Level)
Green Power LED
Red Alarm LED
Time Delay Adjustment
(Clockwise Increases Delay)