Flowserve Chemstar standard - Manual (Page 10)

CHEMSTAR USER INSTRUCTIONS ENGLISH 71569185 02-10
Page 10 of 44 flowserve.com
Identify the actual pump size and serial number from
the pump nameplate. Check that this agrees with the
applicable certification provided.
If it is a Chemstar pump with hydrodynamic sealing or
repeller then the pump size will be engraved on the
nameplate typically as below:
125X100M-315
M = repeller pump
3.3 Design of major parts
3.3.1 Pump casing
The pump casing is designed with a horizontal
centreline end inlet and a vertical centreline top outlet,
which makes it self venting. For ease of maintenance,
the pump is constructed so that pipe connections do not
have to be disturbed when internal maintenance is
required.
3.3.2 Impeller
An exclusive reverse vane impeller is fitted giving
important maintenance-reducing advantages. The
reverse vane impeller is set against the rear cover.
(On the hard-chrome iron material option the design
of the impeller is front open and is set against the
front of the casing.)
3.3.3 Shaft
The large diameter stiff shaft, mounted on bearings,
has a keyed drive end.
3.3.4 Bearing housing
The exclusive external micrometer shaft adjustment
bearing housing design enables quick and accurate
adjustment of impeller face clearance.
3.3.5 Pump bearings and lubrication
The pump is fitted with ball type bearings which may
be configured differently dependent on use. The
bearings may be oil or grease lubricated depending
upon the arrangement specified.
3.3.6 Rear cover
The rear cover has spigots between the pump casing
and bearing housing for optimum concentricity.
A fully confined gasket forms the seal between the
pump casing and the seal housing.
The rear cover designs provide improved performance
of mechanical seals. The design enables the optimum
sealing solution for each application to be fitted.
3.3.7 Shaft seal
The mechanical seal(s) attached to the pump shaft
seals the pumped liquid from the environment. Gland
packing may be fitted as an option.
3.3.8 Driver
The driver is normally an electric motor. Different drive
configurations may be fitted such as internal combustion
engines, turbines, hydraulic motors etc driving via
couplings, belts, gearboxes, drive shafts etc.
3.3.9 Accessories
Accessories may be fitted when specified by the
customer.
3.4 Performance and operating limits
This product has been selected to meet the
specifications of the purchase order. (See section 1.5.)
The following data is included as additional
information to help with your installation. It is typical,
and factors such as temperature, materials, and seal
type may influence this data. If required, a definitive
statement for your particular application can be
obtained from Flowserve.
3.4.1 Operating limits
Maximum ambient temperature
- 20 to + 40 ºC
(- 4 to +104 ºF)
Maximum pump speed refer to the nameplate
4 INSTALLATION
Equipment operated in hazardous locations
must comply with the relevant explosion protection
regulations. See section 1.6.4, Products used in
potentially explosive atmospheres.
4.1 Location
The pump should be located to allow room for access,
ventilation, maintenance and inspection with ample
headroom for lifting and should be as close as
practicable to the supply of liquid to be pumped. Refer
to the general arrangement drawing for the pump set.
4.2 Part assemblies
On baseplated pump sets the coupling elements are
supplied loose. It is the responsibility of the installer
to ensure that the pump set is finally lined up as
detailed in section 4.5.2, Alignment methods.