6
Check the Resistance - (Multi-Meter)
CAUTION: Perform this test with the pump off.
This test is to check for open circuits or loose connections and also to determine if the motor windings are
good.
To perform this test, touch one meter lead to the white pump lead, touch the other meter lead to the
black pump lead, record the reading. Then compare the readings to the readings found on motor winding
resistance charts (Table 1). Readings should be within ±5% of nameplate.
(If AUF PUMP - Tip on/off fl oat up while measuring resistance.
(If AEU PUMP - Remove AUE level control and install test plug while performing this test.)
Readings should be as follows: Black to White = 1.06ohms.
(All fi gures are approximate, variances may occur as results of pump motor manufacturer specs, and or,
direct burial cable of varying lengths.)
If these readings do not correlate, then the motor windings or wiring is faulty.
TABLE 1: Motor Winding Resistance
MODEL No.
HP VOLT PH NEMA
START
CODE
FULL
LOAD
AMPS
LOCKED
ROTOR
AMPS
CORD
SIZE
CORD
TYPE
CORD O.D.
± .02 (.5)
in (mm)
CORD
LENGTH
Ft. (m)
WINDING
RESISTANCE
MAIN-START
OGP2022L
2
240
1
H
16.5
53.8
12/3
SOW
.61 (15.5)
15 (4.6)
1.06-3.60
OGP2022AUF
2
240
1
H
16.5
53.8
12/5
SOW
.71 (15.5)
15 (4.6)
1.06-3.60
OGP2022AUE
2
240
1
H
16.5
53.8
12/5
SOW
.71 (15.5)
15 (4.6)
1.06-3.60
Winding Resistance ±5%. Pump Rated For Operation at ±10% Voltage at Motor.
Jammed or Worn Cutter
Check the cutter for freedom of movement, the cutter should move by hand. Also check for excessive wear,
if there is evidence of this, then the worn piece(s) must be replaced.
NOTE:
If the cutter is excessively worn, the shredding ring may be reversed.
CAUTION: CUTTER ASSEMBLY MAY BE SHARP!
Check Valve Evaluation
To check the performance of the check valve, perform a visual inspection of the valve to determine if the
ball or fl apper is pitted or distorted. In addition, look in the valve to make certain it is free of obstructions that
may cause the valve to not seat properly.
Содержание OGP 2 HP
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