Flowserve GSF GESTRA Steam Systems - Handbuch (Seite 4)

4
ENGLISH
Strainers must only be installed by qualified technicians.
Read the operating instructions before installation.
Only use original GESTRA spare parts!
Important Safety Notes
GESTRA strainers are installed in pipes in order to filter
out impurities.
Function
Danger
The unit is under pressure during operation!
When flange connections or sealing screws are removed,
the medium can escape.
Observe safety regulations in respect of the medium!
Installation and maintenance work should only be carried
out when the system is depressurized: Isolate unit from
both upstream and downstream pressure.
The unit becomes hot during operation!
This presents the risk of severe burns to hands and
arms.
Installation and maintenance work should only be carried
out when the system is cold!
Sharp edges on internal parts present a danger of cuts
to hands!
Always wear industrial gloves for installation and main-
tenance work!
n GSF 00 (0N – 0N)
Y-type strainer with flanged connections made of
grey cast iron
Screen of stainless steel wire mesh
With additional support basket from DN 50
n GSF 0 (9N – N)
Y-type strainer with flanged connections made of
cast steel, heat resistant cast steel, gunmetal or
stainless steel
Screen of stainIess steel wire mesh
With additional support basket from DN 50
n GSF 0 ( – 8)
Y-type strainer form with screwed connection
Screen of stainless steel wire mesh
n GSF 40 (4 – 48)
Screen with screen frames made of stainless steel
wire mesh sandwiched between perforated stainIess
steel plates
Sealing cover with screwed in vent plugs and
drainage plugs in the base of the housing
With/without heating jacket
n SZ 6A
Wafer design in short overall length
Cylindrical body with drain plug
Hemispherical screen
Refer to data sheets for special designs.
Design
Pressure/Temperature ratings
See data sheet.
Dimensions
See data sheet.
Technical Data
. Observe installation position. The element of Y-type
strainers should point downwards when installed in
a horizontal line.
. Observe flow direction. The flow direction arrow is
cast on the housing.
. Observe free space for future disassembly of the
screen (see data sheets).
4. Remove plastic sealing plugs. The plastic sealing
plugs only serve as transit protection!
5. Clean sealing surfaces.
6. Install strainer.
Installation
With flange
Ensure that the pipe flanges are exactly parallel to the
connection flanges on the unit. Tighten the diagonally
opposite flange connection screws evenly. Do not distort
the unit when tightening.
Important Note
Never exceed beyond the max. permitted operating con-
ditions. For strainers, this refers to operating pressure
and temperature.
After the first initialization, or after system modifications,
check strainers for dirt and damage. Refer to “Cleaning
the screen insert”.
Commissioning
GSF 340
Open the manual vent valve, if necessary.
Operation
Danger
GSF 340
The unit is under pressure during operation. When the
manual vent valve is opened, the medium escapes through
a relief hole. Observe the safety regulations concerning the
medium! Before opening, put on the necessary protective
clothing! Open the valve carefulIy!
Clean dirty screen inserts. The frequency for cleaning
the screens is dependent on the degree of dirtiness of
the pipes.
Cleaning the screen insert
GSF
. Prepare replacement gaskets.
. Remove screw cover (GSF0)
N or cover
screws A.
. Remove the screw cover (GSF0) N or cover D,
seal E and screen F.
4. Clean screen F in a container with cleaning agent.
5. Dry screen F with compressed air.
6. Check gasket E and screen  F and replace
damaged parts.
7. Insert gasket  E in the centering supports.
8. Replace screw cover (GSF0) N or cover D.
Ensure that the screen F is not distorted here.
9. Only tighten screw cover (GSF0) N or screws A
and nuts G until a sealed connection is achieved.
SZ
. Prepare replacement gaskets (flanges).
. Loosen the flange connection screws and remove.
. Remove the SZ from the pipes.
4. Clean the screen
F in the container with cleaning
agent.
5. Dry screen F with compressed air.
6. Check gasket E and screen F and replaced
damaged parts.
7. Reassemble in reverse order.
Maintenance
Part Designation
E Seal
F Screen
Please specify type designation and nominal size,
Example:
n Typ SZ 6A DN 40
n Typ GSF 0 (GSF 0N) DN 00
Spare Parts