7
Operation and Maintenance Manual
QC Series Centrifugal Pump
QC-M02
ASSEMBLY PRELIMINARIES
Before beginning the assembly procedure identify every element that is going to be installed,
you can use the exploded view and part list shown in pages 6 and 7. During the assembly you
may need the following tools:
1. 1", 3/4", 9/16" and 1/2" Wrenches.
2. 1/8", 5/32", 3/16" and 1/4" Allen wrenches.
3. Rubber mallet.
4. Caliper, useful when assemble seal type “E”.
5. 5/8" & 7/8" Socket – for impeller nut, for QC plus models.
6. 3/8" diameter steel rod – to hold stub shaft plus, for QC plus models.
7. Torque Wrench
Recently it has been added new series to the known QC series: the kit plus, QC plus series and
IC plus series for every specific applications. There are some modifications in the assembly in
each one of these series without altering the operation of the equipment.
KIT PLUS (KIT+)
It is made up by a stub shaft plus, a stub shaft collar, a shaft key, an impeller plus, an impeller nut,
front and back impeller gaskets. The collar may use one or two screw according to the pump
model. This assembly works exactly the same as a standard assembly from the QC series.
QC PLUS (QC+) SERIES
The QC plus series have been development to facilitate the assembly of the QC series pumps
offering some advantages. QC plus series have a better subjection when mounting the stub
shaft onto the motor using a collar. The stub shaft plus is threaded and offers a better assembly
to the impeller by means of a key and a nut to obtaining an assembly designed to meet the 3A
regulations. An ordinary QC series pump can be turned into a QC plus series with a Kit plus.
IC PLUS (IC+) SERIES
Series IC plus is a modality of the QC series plus for industrial purposes. It uses an internal
mechanical seal denominated
T21
which lodges in an industrial back plate. Because of this
series is industrial does not meet the 3A regulations. No other type of mechanical seal like “
D
”,
“
DG
”, ”
E
” or “
F
” seals from the QC series is compatible with the IC plus series. An ordinary QC
series pump can be turned into a IC plus series with a Kit plus, an industrial back plate and a
mechanical seal type
T21
.
WARNING
Before servicing pump, disconnect electrical
power source, carefully relieve all pressure and
drain all fluids from pump and connected piping.
IN
ST
ALL
ATIO
N
