Dexon Canada Air Systems Inc
OWMDH Series Use Manual
Version 07.2019
Page
12
e. Check all connections to the control section for loose or damaged wires and ensure they
are secure.
f. Check for any signs of moisture or corrosion in the control section and on the 95DH
Main Control Board.
3. Disconnect wires to heating element and controls circuit at TB7 and TB8 and cap-off.
Disconnect the status board wires at TB3 on the main controller and cut any cable ties. Remove
screws at the top of the control panel and gently pull the top of control panel towards you and up
off the mounting pins (See appendices
– Control Section Removal). This allows the complete
control section to be removed including the fan, heating elements, thermostats and sensors.
Proceed with the following;
a. Remove any accumulated debris from the fan, heating elements, thermostats and
sensors.
b. Check the fan, heating elements, thermostats and sensor connections for signs of
moisture or corrosion and ensure they are secure.
c. Ensure the temperature sensor is inserted all the way to the bottom of the tubing.
4. Replace any damaged or corroded parts. When complete reinstall the control section and
reconnect all wiring.
5. Power up the unit and complete the performance check as described under section 4.3.
6. Ensure all conduit holes are completely sealed with duct seal and secure door with using all the
latches.
Please note that if the blower heater is installed in a high debris location, in forests or parks the
blower heater may require more frequent cleaning and maintenance.
WARNING: Never leave the blower heater in “Manual” mode unattended. Leaving it in
“Manual” mode will drive the fan at full speed and will override the “Low Temp.” shut
down feature. The unit
should never be left in “Manual” mode since the heating
capacity of the unit is based on preset airflow rate and continuous duty in “AUTO”
mode.
, Website:
Tech Support Phone: 403-930-1284, Admin Phone: 403-272-0562
WARNING:
EXPLOSION HAZARD; SUBSTITUTION OF COMPONENTS MAY IMPAIR
SUITABILTY FOR CLASS 1, DIV. 2.
