Section:
Mag Drive 500 Pumps
Page: 1 of 4
Date: January 2010
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. 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 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.
See Table 1 for
maximum discharge pressure of each model. Temperature
limit for any application cannot exceed 140°F.
Caution: Suction pressure should never be greater than
discharge pressure.
Table 1. Pump Data
Pump
Model
Suction
Port
(NPT)
Discharge
Port
(NPT)
Voltage
Rating
(VAC)
Discharge
Pressure
(psig)
Mag 331
1”
3/8”
See Motor Nameplate
For Voltage Ratings
100
Mag 332
1”
3/8”
See Motor Nameplate
For Voltage Ratings
80
Mag 333
1”
3/8”
See Motor Nameplate
For Voltage Ratings
50
Mag 344
1”
3/8”
See Motor Nameplate
For Voltage Ratings
40
TROUBLESHOOTING
WARNING: Before making adjustments, disconnect
power source and thoroughly bleed
pressure from system prior to disassembly.
Failure to do so could lead to electric shock
or serious bodily harm.
Failure to Pump.
1. Motor will not start: Check power supply. Voltage must
be ± 10% of nameplate rating when motor is in locked
rotor condition.
SERVICE MANUAL
Moyno
®
Mag Drive 500
300 Series Motorized Pumps with
Magnetic Drives
331, 332, 333, 344 MODELS