MYERS SX50, Инструкция по установке и обслуживанию

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23833A465 15
Checking for Moisture in Motor: Use an
ohmmeter or a megger and set on highest scale.
Readings on the large power cord between any
of the conductors red, black or white to the green
conductor or to the motor housing should be
greater than 1,000,000 ohms (megohm). A motor
will probably run with a lower reading, but if the
pump is out of service and the value of the reading
is below 1,000,000 ohms (1 megohm), the motor
housing and stator should be removed and baked
in a drying oven at 220°F. This service work should
be done only at an authorized service station.
Note, readings should be taken with line leads
disconnected from the control panel.
Resistance of Windings: Every motor winding has
a fixed resistance. The windings must check close
to the values given in the tables to operate properly.
See the motor electrical data chart (Figure 4). Use
an ohmmeter and set to the one ohm scale. Read
the resistance with the motor leads disconnected
from the pump control panel.
CHECK LIST IF PUMP DOES NOT OPERATE PROPERLY
WIRING SCHEMATIC FOR 460V, 3Ø DUPLEX SYSTEM
X
Z
NOTES:
1. Level switches must be rated a minimum of 2 amps @ 120V.
2. Torque all white field wiring terminals to 8 in. lbs.
3. Field wiring must be 60°C copper wire minimum.
4. ---------- = items not supplied in panel.