10
Manifold
Sensor Bar - Remove Screw 1 & 2 and Lift Off Cover
CO
2
Sensor
Toxic Sensor
PID Sensor
Screw 1
Screw 2
Thin-layer of
Silicone
is applied
to a clean impactor.
Example of
accumulated dust
(will form into
a pyramid)
Maintenance/Cleaning
Sensors Locations
The gas sensors are inserted, factory calibrated, and ready for usage upon delivery. (The diagram below
is based on the EVM-7 model.) Occasionally, you may have to care for the sensors which will require
removing and inserting.
NOTE: Verify the unit is off and unplugged from the power cord before
removing or inserting sensors.
1. Remove the sensor bar (via the screws) and remove the manifold.
2. Sensor bar removal and location of sensors are displayed below. When removing/inserting, align the
socket pins to the circuit board accordingly.
Impactor Care and Particulates
The impactor requires periodic greasing and cleaning for particulate measuring only.
1. Remove the turret (red housing cover over the impactor) by removing the right and left screw with
the supplied allen wrench (stored behind
the access door.)
2. Remove all debris/dust with a Q-tip/cotton.
3. Wipe a
very thin film
of silicone grease onto
the metal plates using a Q-tip/cotton.
4. Re-attach by placing the turret cover over
the housing and tighten screws.
