CCI Thermal Technologies CPXD - Control Panel for XDF Duct Heater - Manual (Page 4)

8.0 OVERHEAT PROTECTION
8.1 The heater is equipped one (1) high limit thermocouple per
heating bank to sense the heating element sheath temperature.
Each high limit thermocouple must be wired to a separate Certified,
manual-reset high limit controller in the control panel. The set point
of the controller(s) must not exceed the values given in Table 2.
8.2 In the event of fan failure, excessive dust buildup, or restricted
airflow, the heater temperature may rise, causing the limit controls
to open and break the power supply to the heater.
CYCLING OF THE HEATER ON THE HIGH LIMITS
SHOULD NOT BE PERMITTED. Should this occur,
the system should be inspected to determine the
cause of the cycling, and the condition must be
corrected before regular operation is resumed.
9.0 MAINTENANCE
DISCONNECT ALL POWER TO THE EQUIPMENT
PRIOR TO SERVICING.
9.1 Periodically inspect the heater installation to ensure that all
connections, fitting, plugs, screws, covers, etc. are tight and free of
corrosion.
MI289 REV.2.01 Page 4 of 4
CCI Thermal Technologies Inc. 2721 Plymouth Drive, Oakville, ON L6H 5R5 Tel. (905) 829-4422 Fax (905) 829-4430
www.ccithermal.com
9.2 Check the surface of the duct section and terminal boxes for
dust and debris, especially after seasonal shutdowns. Clean with
a blast of air or vacuum.
9.3 Check the surface of the finned elements for dust and debris.
Clean with a blast of air.
9.4 Ensure that all fuses are in proper working order.
9.5 Maintain the pressure differential switch in accordance with the
manufacturer’s instructions.
9.6 Field repair of the heater should not be undertaken. In the
event that the heater must be repaired, contact the factory.
10.0 DRAWINGS AND LITERATURE
10.1 LITERATURE
The following manufacturer’s literature has been included with this
manual:
a) Explosion-Proof Pressure Differential Switch
11.0 FIELD SERVICABILITY
The XDF explosion-proof duct heater is not field-serviceable. If
your heater requires servicing, please consult the factory.