moyno 300 Series Service Manual

DESIGN FEATURES
Housing: PVC or Non-Metallic
Pump Rotor: Titanium
Pump Stator: FPM, NBR (Nitrile), EPDM
Seal: Sealless design
Motor Shaft: Hardened Carbon Steel
Motor: .5 and 1 HP, 60 Hz, 1750 RPM, totally
enclosed fan cooled (TEFC), C-Faced,
3 Ph, 230/460V (other motor
options available; consult sales
representative)
INSTALLATION
Mounting Position. Pump may be mounted in any
position.
Pre-Wetting. Prior to connecting pump, wet pump
elements by adding fluid to be pumped into suction and
discharge ports. Turn pump over several times in a
clockwise direction to work fluid into pump elements.
Piping. Piping to pump should be self-supporting to avoid
excessive strain on pump housings.
suction and discharge port sizes of each pump model. Use
pipe "dope" or tape to facilitate disassembly and to provide
seal on pipe connections.
Electrical. Follow the wiring diagram on the motor
nameplate or inside the terminal box for the proper
connections. The wiring should be direct and conform to
local electrical codes. Check power connections for proper
voltage. Voltage variations must not exceed ±10% of
nameplate voltage. Motor is provided with internal
automatic overload protection.
To prevent damage to pump, pump rotation must be
clockwise when facing pump from motor end.
OPERATION
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.
maximum discharge pressure of each model. Temperature
limit for any application cannot exceed 140°F.
SERVICE MANUAL
®
Moyno
300 Series Motorized Pumps with
Magnetic Drives
331, 332, 333, 344 MODELS
Caution: Suction pressure should never be greater than
See Table 1 for
Mag 331
Mag 332
Mag 333
Mag 344
TROUBLESHOOTING
WARNING: Before making adjustments, disconnect
Failure to Pump.
1.
See Table 1 for
Mag Drive 500
discharge pressure.
Table 1. Pump Data
Suction Discharge
Pump Port Port
Model (NPT) (NPT)
1" 3/8"
1" 3/8"
1" 3/8"
1" 3/8"
power source
pressure from system prior to disassembly.
Failure to do so could lead to electric shock
or serious bodily harm.
Motor will not start: Check power supply. Voltage must
be ± 10% of nameplate rating when motor is in locked
rotor condition.
Section:
Mag Drive 500 Pumps
Page: 1 of 4
Date: January 2010
Voltage Discharge
Rating Pressure
(VAC) (psig)
See Motor Nameplate
100
For Voltage Ratings
See Motor Nameplate
80
For Voltage Ratings
See Motor Nameplate
50
For Voltage Ratings
See Motor Nameplate
40
For Voltage Ratings
and thoroughly bleed