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Chart 1 -Motor Won't Start - Honeywell WP241 Series Service Data

Dual air compressors
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Before using listening rod near spinning flywheel,
belts, etc, determine if it is long enough to avoid
moving parts.
In the l/2 and l/3 hp (0.37 and 0.25 kW) a noise
which cannot be traced to the pump is usually the check
CHECK
PRESSURE
SWITCH,
T R A C E W I R I N G
F I N D F A U L T
*ON
(0.75
OR
MOTOR OFF AFTER A SHORT PERIOD OF TIME.
CHART l-MOTOR WON'T START
CHECK CIRCUIT
B R E A K E R O R F U S E
R E P L A C E C A P A C I T O R ,
S T A R T I N G S W I T C H ,
OR
MOTOR
SMALLER
MOTORS,
THERMAL
valve. (Larger units do not have a check valve.) Dis-
assemble the check valve and inspect. If cleaning does
not stop the noise, replace check valve.
I
Another noise which is not easily traceable is a
vibrating guard. Check the belt guard by applying hand
pressure to outside surfaces at different points.
DISCONNECT
COOL
RECONNECT
NO
M O T O R
I
OVERLOAD
PROTECTORS
9
POWER,
MOTOR
POWER
MAY
SHUT
75-7268

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