12
4.7 MOTOR
LUBRICATION
Do NOT lubricate the oil burner motor or the direct drive
blower motor as they are permanently lubricated.
4.8 PULLEY
ALIGNMENT
Align the motor pulley and the blower pulley by moving
the motor on the blower rail. Set a straightedge on the two
pulleys and check if the blower belt is perfectly parallel to
it (refer to Figure 4).
Figure 3 – Pulley adjustment
4.9 BELT
REPLACEMENT
Check the blower belt for wear and replace if necessary,
using the two adjustment screws located near the motor
base. ALWAYS remove the belt tension before replacing it.
NEVER use a screwdriver to remove or install a belt. This
can damage the pulleys and other components.
Belt tension verification
I
deally, belt tension should be checked with an appropriate
gauge. If such a tool is not available, the tension can be
checked by applying pressure to it in the centre between
the pulleys. The belt displacement should be about 25.4
mm (1") (refer to Figure 4.1). Adjust the belt by using the
two adjustment screws located near the motor base.
Figure 4 – Belt tension verification
CAUTION
Excessive belt tension is the most frequent
cause of bearing wear and resulting noise.
Check for proper belt adjustment.
DNS-0853 Rev. A
Содержание AMT400B34-SM1PMA
Страница 16: ...16 Figure 5 Furnace dimensions DNS 0848 Rev E...
Страница 17: ...17 Figure 6 Ladder Diagram Heating and Cooling AMT400B34 SM1PMA OLR350H28B...
Страница 18: ...18 Figure 7 Wiring Diagram heating and cooling AMT400B34 SM1PMA OLR350H28B DNS 1016 Rev B...
Страница 19: ...19 Figure 8 Wiring Diagram Heating AMT400B34 SM1PMA OLR350H289B DNS 1021 Rev B...
Страница 20: ...20 COMPONENTS AND REPLACEMENT PARTS...
Страница 21: ...21 Figure 9 Parts List With 4 speed motor PSC B50043B...
Страница 40: ...18 Figure 6 Diagramme en chelle chauffage et climatisation AMT400B34 SM1PMA OLR350H28B...
Страница 42: ...20 Figure 8 Diagramme lectrique chauffage AMT400B34 SM1PMA OLR350H28 DNS 1021 Rev B...
Страница 44: ...22 B50043 Rev B Figure 9 Liste de pi ces avec moteur 4 vitesses PSC...