MOTOR SPECIFICATIONS
CONNECTORS
DIMENSIONS
MODEL
NO.
VOLTS PHASE RPM
H.P.
AMPS
MAX.
G.P.M.
MAX.
HEAD
INLET OUTLET HT.
WD.
LG.
115/230 One
10/5
7R,7K
230/460 Three
¾
2.2/1.1
18”
115/230 One
11.8/5.9
7S
230/460 Three
3450
1
3/1.5
53
60 Ft.
1-1/2” FPT
1” MPT
9-1/16”
9-1/4”
18-3/8”
March “Orbital” Magnetic Drive Pumps eliminate the conventional
shaft seals found in most pumps. This means that there is no
rotating shaft or seal to wear and allow the liquid being pumped to
leak out. The only seal in the pump is a stationary “O” ring seal
between the front and the rear Housings. The only moving part
other than the motor is the Impeller-Magnet Assembly, which
rotates on a stationary spindle and up against a thrust washer.
These are the only parts that might wear and, may require
replacement.
PUMP CONSTRUCTION & SERVICING
The TE-7-MD pump was designed to handle a wide range of acids,
bases, caustics, solvents and other corrosive liquids.
Pumps are not self priming and will not produce a
suction lift and must be in stalled with a positive flooded
suction. The only moving parts inside the pump volute
are the Impeller-Magnet Assembly (item 7) and the
Impeller Bushing, which rotates on the Ceramic Spindle
(item 6). If the pump is run with no liquid inside the
pump volute, there is danger of damaging the Impeller
Bushing. Short runs of 30 seconds or less will not
damage the pump. This will allow you time to check
your electrical hookup. The electrical wiring diagram is
located inside the cover of the motor conduit box. The
Impeller must rotate in a clockwise direction when
viewed through the inlet of the pump. The totally
enclosed motor for 7R,7K is ¾ H.P., 115/230 volts;
50/60 Hz; single phase; rated for continuous duty;
capacitor start; No. 56 “C” Nema Frame with rigid base.
Standard Nema motor mounting on 11/32 wide slots on
3-inch centerlines. Motors available in 230/460 three
phase current, 50/60 Hz, TEFC, in ¾ H.P,1 H.P., and
1½ H.P. Explosion-proof motors are also available in 1
and 1½ H.P.
ELECTRICAL & OPERATION
TE-7R-MD, TE-7K-MD, AND TE-7S-MD PUMPS
METAL PUMP ONLY
The Impeller (item 7), ceramic shaft (item 6), and ceramic Thrust
washer (item 5) are packed separately within the pump carton to
prevent damage during shipping. These items need to be
assembled into the pump before installation. Be sure all parts are
assembled per the exploded view shown.
PUMP DISASSEMBLY AND INSPECTION
To disassemble the pump, simply remove the six Housing Screws
(item 1). The entire wet end assembly up to the Motor Bracket (item
10) will now slide apart. The Impeller Magnet Assembly (item 7) will
slide off the Spindle (item 6).
INSTRUCTIONS & REPAIR PARTS FOR MODELS
RATINGS AND SPECIFICATIONS
Ratings based on pumping water. Overall dimensions may vary depending on the motor used.
The Spindle is a snug fit into the front Pump Housing
and the rear Impeller Magnet Housing. It may be
necessary to twist the Spindle to pull it free. Replace
any worn or damaged parts if necessary.