Pentair MYERS Series User Manual

5
is in position, place the spring over the register on
the rotational portion of the seal.
2. Before placing impeller on shaft, the seal spring
retainer should be placed on shaft with stepped
end toward seal spring. Position the key into the
seat in the shaft. Align the impeller onto the shaft,
making sure that the seal spring is registered
properly onto the back side of the impeller. Insert
the bolt and washer assembly into the shaft and
tighten to 93 ft.-lbs.
3. Fill the seal chamber with new dielectric
oil. An air gap of 10–15% volume must be
left for the expansion of the oil when it is at
operating temperature.
4. The brass wear ring can be aligned with the
retaining holes and tapped into place with a soft
mallet. The proper Loctite should be applied to
the bolts. Install and tighten.
5. The motor and impeller assembly can be installed
into the volute. Make sure that the impeller
aligns properly with the volute. Install the volute
retaining bolts and tighten.
6. Air tends to trap in the pump case when water
rises in the sump or when the pump is lowered
into the water after service. To vent off this air,
a small hole is drilled into the volute casting. Be
sure this vent hole is clean after any service
work on pump. Air venting is not a problem after
initial start.
CHECK LIST IF PUMP DOES NOT OPERATE PROPERLY
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 (1 megohm). Service
work should be done only at an authorized service
station. Note, readings should be taken with line
leads disconnected from the control panel.
CONDITION
Red light comes on at control box.
Overload trips at control box and alarm buzzer or
ashing red light comes on due to high water level
in basin.
Yellow run light stays on continuously.
PROBABLE CAUSE
This indicates some water has leaked past the lower seal
and has entered the seal chamber and made contact
with the electrode probe. Pump must be removed for
replacement of lower seal. This preventive repair will save
an expensive motor.
1. Push in on red reset button to reset overload.
If overload trips again after short run, pump
has some damage and must be removed from
basin for checking.
2. Trouble may be from clogged impeller causing motor to
overload or could be from failed motor.
3. Trouble may be from faulty component in control box.
Always check control box before removing pump.
1. Indicates H-O-A switch may be in the hand position.
2. Level control switch may have failed causing pump to
continue to operate when water is below lower control.
3. Impeller may be partially clogged causing pump to
operate at very reduced capacity.
4. Gate valve or check valve may be clogged causing low
pump ow.
5. Pump may be air locked.
Resistance of Windings: Every motor winding has
a xed resistance. The windings must check close
to specication values. Verication of the proper
wiring of a dual voltage motor can also be checked
by measuring the motor winding resistance.

Pentair MYERS Series Specifications

General

Brand	Pentair
Model	MYERS Series
Category	Water Pump
Language	English