Service manual V1.0
Page
7
of 10
www.mcedsystems.com
4.3.
R
EPLACE MOTOR OF CIRCULATING PUMP
–
BEF-04,
BEF-05
&
BEF-075
1.
Unplug the motor and the unit from their electrical circuit.
2.
Remove the pump mounting screw (1).
3.
Remove the motor mounting screws (4).
4.
Replace the defective motor pump and the damper coupling by new ones.
5.
Tighten the motor mounting screws (4).
6.
Tighten the pump mounting screw (1).
NOTE: Make sure the pump is properly aligned with the damper coupling and the motor.
7.
Reconnect the unit and the motor to their electrical circuit.
4.4.
R
EPLACE TEMPERATURE CONTROLLER
NOTE: Before doing any work on electrical components, disconnect the unit from its electrical circuit.
1. Dismantle the temperature controller housing.
TIP:
Keep pictures and notes of the wire connections.
2. Remove wire connectors using a small slotted screwdriver.
3. Slide off the plastic retainer by applying pressure with a small screw driver on each side. Pull
out the temperature controller of the housing.
4. Connect wires to the correct numbers on new thermostat and reassemble into housing.
NOTE: Firmly tighten the wire clamp screws.
Refer to section 0 for the correct wiring.
5. Re-install the temperature controller and the plastic retainer.
6. Re-install the housing on the support plate.
7.
Reconnect the unit to the electrical circuit.
8. Adjust the temperature controller, Refer to section 2.4.
4.5.
R
EPLACE TEMPERATURE CONTROLLER RELAY
NOTE: Before doing any work on electrical components, disconnect the unit from its electrical circuit.
1. Dismantle the temperature controller housing.
TIP:
Keep pictures and notes of the wires connections.
2. Remove wire connectors using long nose pliers.
3. Remove relay mounting screws (2).
4. Connect wires to correct position on new relay and tighten the mounting screws (2).
