AMT MSV1 Series, Specifications Information And Repair Parts Manual, Page: 2 / 16

Specifications Information and Repair Parts Manual
MSV1, MSV3 and MSV5 Series
5910-251-00 2 10/2016
Piping and/or pipe fittings with an insufficient pressure rating may burst
and cause personal injury and/or property damage.
MAXIMUM INLET PRESSURE
“1” Series
2 to 25 ...................................................................... 335 ft./145 psi [1000 kPa]
27 stage ................................................................... 500 ft./217 psi [1500 kPa]
“3” Series
2 to 15 ...................................................................... 335 ft./145 psi [1000 kPa]
17 to 25 .................................................................... 500 ft./217 psi [1500 kPa]
“5” Series
2 to 9 ........................................................................ 335 ft./145 psi [1000 kPa]
10 to 29 .................................................................... 500 ft./217 psi [1500 kPa]
If system pressure has potential to exceed number listed above, then a check
valve is required on discharge side of pump. This will ensure that proper inlet
pressure is maintained when pump shuts off.
MAXIMUM OUTLET PRESSURE
If system pressure in excess of 536 ft./232 psi [1600 kPa] is possible, then it is
necessary to provide means to prevent this. Examples include a bypass valve
or pressure switch on discharge of pump set at or below this number.
OPERATION
Become familiar with pump components (See Figure 2).
Vent Plug (Ref. No. 13)
– Used to purge air from pump.
Wash Plug (Ref. No. 11)
– Used in applications where seal wash is desired to
extend life of shaft seal.
Bypass Valve (Ref. No. 43)
– Connects suction and discharge sides of pump,
making filling/draining procedure easier. During operation, bypass valve must
be closed.
Never run pump dry or with flow shutoff. When pump is running, always
maintain a minimum flow of 4 gpm [0.9 m3/h] to avoid damage to pump.
STARTUP PROCEDURE
To avoid pump damage, it is very important to purge all air from pump
before initial startup.
1. Close discharge valve if present.
NOTE: Make sure bypass valve is closed.
2. Permit liquid to flow into pump thru suction port by gravity.
3. Allow air to escape from pump by cracking open Vent Plug (Ref. No. 13)
in top of pump housing near motor.
4. Wait for liquid to cease sputtering. When liquid flow changes to a steady
stream with no air, close Vent Plug.
5. Run pump briefly, then repeat steps 1 thru 4 repeatedly until all air is
evacuated. Pump is now ready to be run.
ROTATION
Proper rotation is CLOCKWISE when looking up at shaft end of motor, see
directional arrow cast into motor Adapter (Ref. No. 8). Bump motor on/off briefly
to confirm motor is wired for correct rotation. Disregard rotation information
found elsewhere in safety manual.
DRAINING
1. Remove Bypass Valve (Ref. No. 43) and Vent Plug (Ref. No. 13)
completely.
2. Allow liquid to drain.
3. If pump is to be subjected to freezing temperatures, do not reinstall Valve/
Plug.
NOTE: When re-installing the Bypass Valve make sure the drain plug is
installed first then install the valve. Failure to do so could result in performance
issues.
CYCLING
Frequent on/off cycling can shorten motor life. System should be designed so
that pump is NOT starting more than 15 times per hour.
MAINTENANCE
Make certain that unit is disconnected from power source before
attempting to service or remove any components!
MOTOR REPLACEMENT
DISASSEMBLY
Refer to Figure 7
1. Remove two coupling Shields (Ref. No. 9) by unscrewing two Fasteners
(Ref. No. 10) for each.
2. Loosen four Fasteners (Ref. No. 4) in Coupling (Ref. No. 3) evenly until
Motor shaft (Ref. No. 1) can turn independently from Coupling.
3. Remove four Fasteners (Ref. No. 14) from Adapter (Ref. No 8). Motor is
now free, lift straight up to remove from unit.
Figure 2 - Components
Multistage Centrifugal Pumps