Service manual V1.0
Page
6
of 10
www.mcedsystems.com
3.
M
AINTENANCE
1.
Check the glycol level each month to make sure it’s still within 0.5 inch below the overflow fitting.
2.
If the level is too low, add
propylene glycol
solution (mixed 2 parts water to 1 part glycol).
3.
If there are any signs of ice in the unit, give time to the ice to melt and change all the solution with a fresh
solution mixed as indicated in the installation instructions.
4.
Drain and replace the propylene glycol solution every 24 months.
5.
Clean the condenser every thirty (30) days. Be careful to not damage the aluminum fins. NEVER brush
sideways.
4.
S
ERVICING
If you have any problem with the unit, please refer to section 5 to identify the cause of the problem.
4.1.
R
EPLACE CIRCULATION PUMP
–
BEF-02
1. Unplug the pump and the unit from their electrical circuit.
2. Pinch the glycol lines to avoid any dumping.
3. Disconnect the glycol line from the pump.
4. Remove the pump mounting screws (4).
5. Replace the defective circulation pump by a new one.
6. Tighten the mounting screws (4).
7. Connect the glycol line and secure with a stainless steel ear clamp.
8. Release the glycol lines.
9. Reconnect the unit and pump to their electrical circuit.
4.2.
R
EPLACE CIRCULATION PUMP
–
BEF-04,
BEF-05
&
BEF-075
1.
Unplug the motor and the unit from their electrical circuit.
2.
Pinch the glycol lines to avoid any dumping.
3.
Remove the pump insulation. Disconnect the glycol line from the pump.
4.
Remove the pump mounting screw (1).
5.
Replace the defective circulation pump and the damper coupling by new ones.
6.
Tighten the pump mounting screw (1).
NOTE: Make sure the pump is properly aligned with the damper coupling and the motor.
7.
Connect the glycol lines and secure with a stainless steel ear clamp.
8.
Release the glycol lines.
9.
Reconnect the unit and the motor to their electrical circuit.
