22 | Maintenance LM Series Heat Pump
LM Series Heat Pump8 733 905 315 (2013/9) Subject to change without prior notice
3. Lubrication of the blower motor is not
required, however may be performed on some
motors to extend motor life. Use SAE-20 non-
detergent electric motor oil.
4. The condensate drain should be checked
annually by cleaning and flushing to insure
proper drainage.
5. Periodic lockouts almost always are caused by
air or water flow problems. The lockout
(shutdown) of the unit is a normal protective
measure in the design of the equipment. If
continual lockouts occur call a mechanic
immediately and have them check for: water
flow problems, water temperature problems,
air flow problems or air temperature problems.
Use of the pressure and temperature charts for
the unit may be required to properly determine
the cause.
Access to Internal Components for
Vertical (VT) Units
1. Using a Flat screw driver remove and retain
Panel Belt by inserting the screwdriver into the
slot and releasing the catch. (Figures #17 and
#18)
Figure # 17
Figure # 18
2. Remove and retain lower panel by removing
(3)three screws. (Figure #19)
Figure # 19
3. Remove and retain upper panel by lifting up
and out as shown in Figure #20.
Figure # 20
4. Repeat steps 1–3 for other sides as necessary.
See LM IOM for further reference. Manual is
located inside of the unit.
Heat pumps are supplied with panel belt which
needs to be removed to access screws for panel
removal. The belt is held in place by a clip on
one side and an interference fit on the other end.
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