moyno 20302, Service Manual

Page: 31 / 40

Section:
MOYNO
®
500 PUMPS
Page: 1 of 6
Date: March1, 1998
SERVICE MANUAL
MOYNO
®
500 PUMPS
600 SERIES
60301, 61001, 62201, 63301, 65501, 60311,
61011,
62211 ,
63311, AND 65511* MODELS
DESIGN FEATURES
Housing: Cast iron
Pump Rotor: Heavy duty chrome plated
AISI 416 stainless steel
Pump Stator: NBR (Nitrile
)
Shaft: AISI 416 stainless steel
Bearings: Prelubricated, fully sealed ball
bearings
Seal: Mechanical or packing
Flexible Joint: Prelubricated and sealed
*Packing Models available through retrofit kit. See
page 6.
Note: Alternate elastomers available. Refer to
Repair/Conversion kit numbers. page 6.
INSTALLATION
Mounting. Provide the proper alignment between the
pump and drive by mounting both to a common flat
base. Pump may be mounted in any position. When
mounting vertically, it is necessary to keep bearings
above seals to prevent possible seal leakage into
bearings. Loosen screws on body support and stator
support to rotate pump to desired position.
Pre-Wetting. Prior to connecting pump, wet pump
elements and mechanical seal or packing by adding
fluid to be pumped into suction port. Turn shaft over
several times in a clockwise direction when viewed
from the shaft end to work fluid into pump elements.
Piping. Piping to pump should be self-supporting to
avoid excessive strain on pump housings. See Table
1 for suction and discharge port sizes of each pump
model. Use pipe ‘dope” or tape to facilitate
disassembly and to provide seal.
Drive. On belt driven units, adjust belt tension to point
of non-slip. Do not overtighten.
On direct drive units, coupling components should be
aligned and spaced at least 1/16” apart.
Pump rotation must be clockwise when facing shaft.
Check direction of rotation before startup.
Maximum speed is 1750 rpm.
Water Flush of Packing (Packing Models Only).
The packing may be either grease lubricated through
a grease fitting in the stuffing box or have plumbing
connected to the housing to allow a water flush.
When the material being pumped is abrasive in
nature, it may be advantageous to flush the packing
to prevent leakage under packing and
excessive shaft
wear.
Clean water can be injected through a 1/8” NPT
tapped hole that normally houses the grease fitting for
lubricating the packing. The water can be permitted to
leak axially along the shaft in either direction.
OPERATION
Self-Priming. With wetted pumping elements, the
mechanical seal model pump is capable of 15 feet of
suction lift when operating at 1750 rpm with pipe size
equal to port size. The packing model is capable of 25
feet of suction lift.
DO NOT RUN DRY. Unit depends on liquid pumped
for lubrication. For proper lubrication, flow rate should
be at least 10% of rated capacity.
Pressure and Temperature Limits. See Table 1 for
maximum discharge pressure of each model. Unit is
suitable for service at 10° to 160°F with NBR (Nitrile),
and to 210°F with EPDM (Ethylene-Propylene-Diene
Terpolymer) elastomers.
Storage. Always drain pump for extended storage
periods using pipe plug in suction housing.
Table 1. Pump Data
Pump
Model
60301
60311 61001
61011 62201
62211 63301
63311 65501
65511
Suction Port
(NPT)
3/4 3/4 3/4 1-1/4 1-1/4
Discharge
Port_(NPT)
1/2 3/4 3/4 1-1/4 1-1/4
Discharge
Pressure (psig)
600 600 300 150 60
*Minimum
Starting Torque
(IN-LB)
95 180 90 70 60
*Based on water at ambient temperature.