Ventis MX4 - Sensor, Sensor Water Barrier, LCD, and Vibrating Motor Replacement

Ventis™ MX4 Product Manual
© 2014 Industrial Scientific Corporation
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SENSOR, SENSOR BARRIER, LCD, AND VIBRATING MOTOR REPLACEMENT
Service instruction sets are provided below for each monitor type. Please choose, read, and then follow the
appropriate instruction set . Within each set of instructions, follow those relevant to the desired task(s) and note the
following.
 The monitor has a two-part circuit board assembly, the main board and a smaller sensor board. They are
attached to one another with a connecter at the center of the sensor board.
 The sensor barrier can be replaced as an assembly that fits in the monitor’s case top, or the full case top can be
replaced.
NOTE: When a sensor is replaced, it is recommended that the sensor barrier/case top also be replaced. After reassembling the
monitor, a full calibration should be completed.
 The LCD is removed and attached as a single component.
ASPIRATED
Disassembling the Monitor.
1 Power-off the monitor.
2 Loosen the four captive screws on the lower portion of the pump case module bottom (back of the
module).
3 Loosen the single captive screw on the pump case module top.
4 Slide the case door down; lift the hinged door to reveal and access the monitor.
5 Lift and remove the monitor from the pump module; set aside the module.
6 Place the monitor display side down.
7 Loosen the two captive screws on the upper portion of the case bottom.
8 Lift to separate the monitor case top from the monitor case bottom to reveal the circuit board
assembly.
9 Remove the circuit board assembly and set aside the monitor case top and bottom.
10 Separate the main circuit board from the sensor board.
Replacing the LCD (if needed).
1 Grasp the sides of the LCD and lift straight up to remove from the main circuit board.
2 To properly place the new LCD, align the pins on the LCD with their receptacles on the main circuit
board.
3 Gently press straight down and into place.
Replacing the Sensor(s) (if needed).
1 Identify the sensor to be removed.
2 Gently lift and remove the sensor.
3 To add the new sensor, align its pins or connector(s), with the respective receptacles on the sensor
board.
4 Press down. A slight click indicates the sensor is securely in place.
Reassembling the Circuit Board Assembly.
1 Re-attach the main circuit board to the sensor board, aligning their connectors.
2 Press. A slight click indicates the boards are securely attached.
Replacing the Sensor Barrier or Case Top (if needed).
To replace the sensor barrier on the inside of the case top, follow steps 1-5 below.
To replace the entire case top, skip to the instruction set, “Reassembling the Monitor”.
1 Observe the placement of the existing sensor barrier. Note that each cut-out is shaped to match the
sensor it protects.
2 Lift and remove the sensor barrier and gasket from inside the monitor case top. Ensure the entire
case top is free of adhesive; gently scrape, if needed. Wipe with a clean, dry, soft cloth or brush.
3 Lift the backing from the new sensor barrier assembly to reveal the adhesive.
4 Carefully position the new barrier. Each shaped opening matches the shape of the sensor it
protects. Press to attach to the inside of the case top.