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Seeflex Gauge Installation, Operating and Maintenance Instructions. Issue 4. 17.03.2008. G31INS

PAGE 1 OF 24

SEETRU LTD.

ALBION DOCKSIDE WORKS, HANOVER PLACE, BRISTOL BS1 6UT. ENGLAND.

TEL. 0117 927 9204. FAX 0117 929 8193.

INSTALLATION OPERATING &

MAINTENANCE INSTRUCTIONS

NATIONAL

ACCREDITATION

OF CERTIFICATION

BODIES

GENERAL DESCRIPTION.

The Seetru Marine Gauge - Seeflex model has been developed to comply with the requirements of SOLAS
chapter 11-2 regulation 15. The gauge has been reviewed and in a suitable construction is accepted by marine
classification authorities throughout the world.

The Seetru Seeflex gauge is a direct reading liquid level gauge which is mounted on the outside face of a tank. It
consists of one or more sections of Reflex glass and one or more valves. The Reflex glass enables clear liquids to
be easily read. The valve(s) control the flow of liquid from the tank to the gauge. To read the tank level, the
valve(s) must be opened, this allows the contents of the tank to transfer to the gauge. When the level has
stabilised and the reading taken, the valve(s) are closed this isolates the tank contents from the gauge.

Seetru push-button operated, self-closing isolating valves have been used on marine installations for many years.
The Seeflex gauge incorporates this well-proven design, which provides full safety in preventing liquid loss from
the tank. The tank will remain sealed by the self closing valve even if the gauge column is totally destroyed. This
is acheived by placing the sealing system at the back of the valve, which is protected by the tank boss inside the
tank.

Note: Except where otherwise specified the term 'valve', when used in this document, refers to a push button, self
closing valve.

A tank boss is supplied with each isolating valve. The standard boss is suitable for welding to the tank, but
bosses for non-weld installation are available,

This equipment may be fitted with a hydraulic actuation system which may be required by certain classification
authorities.

Technical specification.
Maximum working pressure = 2.67 bar
Maximum working temperature temperature with hydraulic actuation = 80 °C
Maximum working temperature temperature without hydraulic actuation = 88 °C

Note: These are the maximum working limitations of the gauge. Classification authorites or operating conditions
may require lower working limits.

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Содержание Seeflex

Страница 1: ...e s are closed this isolates the tank contents from the gauge Seetru push button operated self closing isolating valves have been used on marine installations for many years The Seeflex gauge incorporates this well proven design which provides full safety in preventing liquid loss from the tank The tank will remain sealed by the self closing valve even if the gauge column is totally destroyed This...

Страница 2: ...ere the tank is pressurised VALVE AT BOTTOM PIPE UNION TO TANK AT TOP see Figure 3 The top fitting is connected to the tank top This is useful when the tank is pressurised i e the small amount of gas above the liquid in the gauge is pressurised to the same level as the gas above the liquid in the tank The column can only be removed when level of liquid in the tank is below the top fitting and the ...

Страница 3: ... 2008 G31INS PAGE 3 OF 24 SEETRU LTD ALBION DOCKSIDE WORKS HANOVER PLACE BRISTOL BS1 6UT ENGLAND TEL 0117 927 9204 FAX 0117 929 8193 INSTALLATION OPERATING MAINTENANCE INSTRUCTIONS NATIONAL ACCREDITATION OF CERTIFICATION BODIES Figure 1 VALVES FITTED TOP AND BOTTOM OF THE GAUGE 38 ...

Страница 4: ...03 2008 G31INS PAGE 4 OF 24 SEETRU LTD ALBION DOCKSIDE WORKS HANOVER PLACE BRISTOL BS1 6UT ENGLAND TEL 0117 927 9204 FAX 0117 929 8193 INSTALLATION OPERATING MAINTENANCE INSTRUCTIONS NATIONAL ACCREDITATION OF CERTIFICATION BODIES Figure 2 VALVE AT BOTTOM VALVELESS TOP RETURN 38 ...

Страница 5: ...8 G31INS PAGE 5 OF 24 SEETRU LTD ALBION DOCKSIDE WORKS HANOVER PLACE BRISTOL BS1 6UT ENGLAND TEL 0117 927 9204 FAX 0117 929 8193 INSTALLATION OPERATING MAINTENANCE INSTRUCTIONS NATIONAL ACCREDITATION OF CERTIFICATION BODIES Figure 3 VALVE AT BOTTOM PIPE UNION TO TANK TOP TANK VENT 38 ...

Страница 6: ...08 G31INS PAGE 6 OF 24 SEETRU LTD ALBION DOCKSIDE WORKS HANOVER PLACE BRISTOL BS1 6UT ENGLAND TEL 0117 927 9204 FAX 0117 929 8193 INSTALLATION OPERATING MAINTENANCE INSTRUCTIONS NATIONAL ACCREDITATION OF CERTIFICATION BODIES Figure 4 VALVE AT BOTTOM AUTO SAFETY VENT VALVE AT TOP 38mm ...

Страница 7: ...7 03 2008 G31INS PAGE 7 OF 24 SEETRU LTD ALBION DOCKSIDE WORKS HANOVER PLACE BRISTOL BS1 6UT ENGLAND TEL 0117 927 9204 FAX 0117 929 8193 INSTALLATION OPERATING MAINTENANCE INSTRUCTIONS NATIONAL ACCREDITATION OF CERTIFICATION BODIES Figure 5 HYDRAULIC ACTUATION SINGLE GAUGE 38 ...

Страница 8: ... 03 2008 G31INS PAGE 8 OF 24 SEETRU LTD ALBION DOCKSIDE WORKS HANOVER PLACE BRISTOL BS1 6UT ENGLAND TEL 0117 927 9204 FAX 0117 929 8193 INSTALLATION OPERATING MAINTENANCE INSTRUCTIONS NATIONAL ACCREDITATION OF CERTIFICATION BODIES Figure 6 HYDRAULIC ACTUATION MULTIPLE GAUGE 38 ...

Страница 9: ...rease prior to welding Use Arosta 316L 150 or equivalent welding rods for mild steel tanks All welding must be to the satisfaction of classification surveyor Gauge see Figure 10 on page 13 and Figure 11 on page 14 Remove the isolation valves from the gauge by unscrewing the retaining nuts Take care not to damage the collar seals Screw the isolation valves into the tank bosses after first checking ...

Страница 10: ...the nuts and bolts and tighten to 3Nm 26 lbs inches Continue the installation as though a one piece gauge WARNING Connection plates are designed to join sections vertically and will not support the gauge sections in a horizontal position COMMISSIONING Fill the tank Depress the push button in the centre of the isolation valves and the gauge will fill Check the tank boss and collar seals for leaks N...

Страница 11: ...lace a reflex glass unit or reflex glass unit gasket Any section of the Seeflex gauge column assembly can be dismantled and reassembled in position against the tank Care must be taken when doing so as any liquid contents within or above the section being maintained will be released Alternatively the column may be removed from the tank by reference to maintenance paragraph A above 1 DISMANTLE PROCE...

Страница 12: ...taining clip 9 Remove push rod 4 Inspect or replace O ring 11 Check for obstructions Reassemble in reverse order D To inspect or replace tank boss O ring 7 Drain tank to below level of connection Remove gauge from tank as described in maintenance paragraph A Unscrew and remove valve unit from tank boss Inspect O ring 7 replace if necessary Check bore in tank boss is smooth and clean Reassemble in ...

Страница 13: ... DIAGRAM M E T I o N N O I T P I R C S E D M E T I o N N O I T P I R C S E D 1 S S O B K N A T 9 P I L C G N I N I A T E R 2 Y D O B E V L A V N O T T U B H S U P 0 1 P I L C R I C 3 T U N G N I N I A T E R 1 1 G N I R O D O R H S U P 4 D O R H S U P 2 1 S G N I R O R A L L O C 5 E V L A V F F O T U H S 3 1 E V L A V F F O T U H S 6 R E C A P S 4 1 T U N G N I N I A T E R D N I L B 7 G N I R O S S...

Страница 14: ...CE INSTRUCTIONS NATIONAL ACCREDITATION OF CERTIFICATION BODIES Figure 11 GAUGE COLUMN PARTS DIAGRAM GAUGE COLLAR GLAND NUT P T F E SPACER COLLAR O RING GAUGE COLLAR HOUSING COLLAR GASKET M6 NYLOC NUT CONNECTION PLATE CONNECTION PLATE GASKET LOWER COLLAR PLATE BACK CHANNEL No 6 REFLEX SEAL No 6 REFLEX GLASS No 6 CUSHION GASKET No 6 FRONT BEZEL No 9 FRONT BEZEL No 9 CUSHION GASKET No 9 REFLEX GLASS ...

Страница 15: ...open 2 Depress the bottom valve an hold open The level inside the tank should now register in the gauge glass 3 When the liquid level settles release the valves to seal off the gauge from tank Note The level shown in the sight tube will remain at this point When a new reading is required repeat the above operations Note If hydraulic actuator is fitted 1 Depress plunger knob lever on actuator which...

Страница 16: ...ce Paragraph Gauge not filling Empty Tank Obstruction in gauge Obstruction in body Fill Clear Clear A E Filling to Incorrect level Incorrect use of gauge See operation instructions Broken sight glass Misuse Misalignment Replace glass Replace glass check tank face flat B Main valve not sealing O ring damaged Broken spring Replace Replace E E Leaks from Collar seal Sight glass gaskets Tank boss Push...

Страница 17: ...ing nuts onto the valve bodies and tighten 9 Refit the upper and lower hydraulic bodies onto the valve bodies The 1 8 o d pipe must be fitted on the left hand side behind the back channel of the gauge column Note the fusible vent screw boss on each hydraulic body must face upwards 10 Refit the cotter pins into the upper and lower hydraulic bodies fit nuts to cotter pins and tighten 11 To operate t...

Страница 18: ...ting the check pin into the 1 0mm dia hole in the left hand side of the lower hydraulic body Release pressure on the plunger and allow it to move back against the check pin This operation prevents the gauge being opened due to thermal expansion of the hydraulic oil 9 Remove the syringe Refit the fusible vent screw in the lower hydraulic body and tighten 10 Make sure both fusible vent screws are ti...

Страница 19: ...3 2008 G31INS PAGE 19 OF 24 SEETRU LTD ALBION DOCKSIDE WORKS HANOVER PLACE BRISTOL BS1 6UT ENGLAND TEL 0117 927 9204 FAX 0117 929 8193 INSTALLATION OPERATING MAINTENANCE INSTRUCTIONS NATIONAL ACCREDITATION OF CERTIFICATION BODIES Figure 12 Hydraulic Actuation Single Gauge System ...

Страница 20: ...he actuator head override push buttons should be out 4 The actuator pump vent plug should be uppermost and the unit securely fastened to a rigid structure 5 All units to be piped together with half hard copper tube installed free of kinks and sharp bends All connections should be properly sealed 6 Hydraulic oil is supplied with the filling kit Alternatively use hydraulic oil type S A E 70R3 or S A...

Страница 21: ...ve discharge of air bubbles if any When clear remove filler fill vent screw boss and refit vent screw Work actuator pump handle Resistance should be felt Isolating valves will open gauge column will fill if tank contains liquid If tank contains heavy viscous fluid actuator pump handle must be held in whilst gauge column fills slowly If no resistance is felt and gauge column does not fill Isolating...

Страница 22: ...n MAINTENANCE The vent screw boss s have fusible alloy inserts vent screws If fluid loss is experienced following a fire in the vicinity of the system fit new vent screws and refill system working through sections Filling Venting and Setting No standard maintenance is required If system is not working properly or has been dismantled and disconnected work through Filling Venting and Setting instruc...

Страница 23: ... BODIES HYDRAULIC ACTUATION MULTI GAUGE SYSTEM Figure 13 SETTING INFORMATION ITEM 1 Actuator head 2 Actuator pump 3 Fusible vent screw 4 Setting Gauge 5 Tube 6 Filler 7 Cotter Pin 8 Fluid S 1 Depress actuator pump handle to open isolating valves Hold open and hold setting gauge in position S 2 Allow actuator to return until gripping setting gauge S 3 Ease back vent plug on actuator Fluid will vent...

Страница 24: ...N 1 TANK PAD 8 FUSIBLE VENT SCREW 2 HANDLE ASSEMBLY 9 CLAMP SCREW 3 PIVOT PIN 10 WASHER 4 O RING 11 TUBE FITTING ELBOW 5 PISTON 12 TUBE FITTING OLIVE 6 SPRING 13 TUBE FITTING TUBE NUT 7 BODY 14 KNOB RIGID MOUNTING STRUCTURE REF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ITEM No DESCRIPTION ITEM No DESCRIPTION 1 COTTER PIN 8 PUSH BUTTON 2 FUSIBLE VENT SCREW 9 O RING 3 REDUCING CONNECTOR 10 BODY 4 TUBE FITTIN...

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