Martin Decker_4118489_01.pdf 5c146d

Part Number TW554 Revision A

INSTALLATION, OPERATION, AND MAINTENANCE

SINGLE LINE WEIGHT INDICATING SYSTEMS P/N WS9 and WS14-Series

Manufacturers of Precision Instruments Printed in U.S.A.

April 17, 1996

Manual TW554 contains 11 pages, divided as follows:

Cover. ........................... i through iii ....................... Introduction ....................... Installation/Operation ................ Maintenance ....................... Repair ............................

April April July July July July

1996 1996 1983 1983 1983 1983

All product, brand, or trade names used in this publication are the trademarks or ed trademarks of their respective owners. Information in this manual is subject to change without notice.

IMPORTANT SAFETY NOTICE Proper service and repair is important to the safe, reliable operation of all M/D TOTCO equipment. The service procedures recommended by M/D TOTCO and described in the technical manuals are recommended methods of performing service operations. When these service operations require the use of tools specially designed for the purpose, those special tools should be used as recommended. Warnings against the use of specific service methods that can damage equipment or render it unsafe are stated in the manuals. These warnings are not exclusive, as M/D TOTCO could not possibly know, evaluate and advise service people of all conceivable ways in which service might be done or of all possible associated hazardous consequences. Accordingly, anyone who uses service procedures or tools which are not recommended by M/D TOTCO must first satisfy themselves thoroughly that neither personnel safety nor equipment safety will be jeopardized by the method selected.

... III

April 17,1996 M/D TOTCO

,‘/-~

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THE FOLLOWING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT BY WAY OF LIMITATION, ANY WARRANlY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. Martin-Decker TOTCO (“Company”) warrants to Buyer (“Purchaser”) of new products manufactured or supplied by the Company that such products are, at the time of delivery to the Purchaser, free of material and workmanship defects, subject to the following exceptions: A.

Any product which has been repaired or altered in such a way, in the Company’s judgement, as to affect the product adversely, including any repairs, rebuilding, welding or heat treating outside of Company authorized facility.

B.

Any product which has, in the Company’s judgement, storage.

C.

Any product which has not been installed, operated and maintained in accordance and within the recommendations of the Company.

D.

For all items of special order by Buyer which are not manufactured warranty claims directly to the manufacturer thereof.

been subject to negligence,

by Company,

accident, or improper

with normal practice

Buyer should submit

The Company’s obligation under this warranty is limited to repairing, or at its option, replacing any products which in its judgement proved not to be as warranted within the applicable warranty period. All costs of transportation of products claimed not to be as warranted to authorized Company service facility shall be borne by Buyer. Costs of return transportation to Buyer of products accepted for repair or replacement by Company under the warranty provisions of the Sales Agreement shall be borne by the Company. Company may, at its sole option elect to refund the purchase price of the products, and Company shall have no further obligation under the Sales Agreement. The cost of labor for installing a repaired or replacement part shall be borne by Buyer. Replacement parts provided under the of this warranty are warranted for the remainder of the warranty period of the product upon which installed to the same extent as if such parts were original components thereof. The warranty periods for various products are: A.

Hydraulic, Mechanical, Electronic Equipment: one (1) year from date of installation or fifteen (15) months from date of shipment from Company, whichever occurs first.

B.

All Elastomer Diaphragms:

six (6) months from date of shipment from Company.

No deviations from the Company’s standard warranty or period as stated herein will be honored unless agreed to in writing by an authorized Company representative prior to acceptance of the order. EXCLUSIVITY OF REMEDY AND LIMITATION OF LIABILITY. THE REMEDIES PROVIDED FOR IN THIS WARRANlY SHALL CONSTITUTE THE SOLE RECOURSE OF BUYER AGAINST COMPANY FOR BREACH OF ANY OF COMPANY’S OBLIGATIONS UNDER THE SALES AGREEMENT WITH BUYER, WHETHER THE CLAIM IS MADE IN TORT OR IN CONTRACT, INCLUDING CLAIMS BASED ON WARRANTY, NEGLIGENCE, OR OTHERWISE. IN NO EVENT SHALL COMPANY BE LIABLE FOR DIRECT, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES, REGARDLESS OF THE FORM OF ACTION, WHETHER IN CONTRACT, STRICT LIABILIN OR IN TORT (INCLUDING NEGLIGENCE), NOR FOR LOST PROFITS.

April I

17,1996

M/D TOTCO

iv

MARTIN-DECKER

TW554 CONTENTS SECTION

PARAGRAPH

PAGE

1

INTRODUCTION AND DESCRIPTION .............................. 1.1 Introduction ............................................... 1.2 Description ................................................ 1.3 System Components ........................................ 1.4 Indicator .................................................. 1.5 Load Ceil ................................................. 1.6 Hydraulic Hose ............................................ 1.7 Attaching and Hardware .............................

1 1 1 1 1 2 2 2

2

INSTALLATION/OPERATION ..................................... 2.1 Installation ................................................ 2.2 Pre-InstaIIation ............................................ 2.3 System Installation ......................................... 2.4 Load Ceil Installation ....................................... 2.5 Indicator InstaIIation ....................................... 2.6 HydrauIic Hose Installation .................................. 2.7 System Operation .......................................... .................................. 2.8 Adjustments .............. 2.9 Load Pointer Zero Adjustment ............................... 2.10 Pointer Damping Adjustment ................................

3 3 3 3 3 3 4 6 6 6 6

3

MAINTENANCE ................................................ 3.1 Maintenance ............................................... 3.2 Troubleshooting ............................................ 3.3 Load Ceil Gap .............................................

6 6 6 6

4

SYSTEM REPAIR ............................................... 4.1 General ................................................... 4.2 Changing and Bleeding System 4.3 Hydraulic Fluid Reduction ...................................

8 8 8 9

...............................

LIST OF ILLUSI’RA’I’IONS FIGURE l-l 2-l 2-2 2-3 3-l

TITLE Typical WS9 or WS14Single Line Weight Indicating System ............ Load CelI Mounting Configuration ................................. Load Ceil Mounting Dimensions, Inches (MRIimeters). ................ Overall Dimensions for Indicator and Brac!cet Installation,. ........... Inches (Millimeters) Load Cell Gap and Plug ..........................................

PAGE

8

LISI’ OF TABLES TABLE l-l 3-l

TITLE System Capacities and Part Numbers Malfunction Isolation ............................................ ..............................

PAGE 2 7 7/83

MARTIN-DECKER

TW554

SECTION 1.0 INTRODUC'IION 1.1 INTRODUCTION. This manual provides installation, operation and maintenance instructions for the WS9 and WS14 Single Line Weight Indicating Systems manufactured by MARTIN-DECKER Santa Ana, California. Read the appropriate section of this publication before performing the indicated procedures. Ensure that alI personnel who wilI be performing these procedures have read the “Important Safety Notice” located on the inside front cover of this manuaL DESCRIPTION. WS9 and WS14 Single 1.2 Line Weight Indicating Systems (Fig. l-1) are hydraulically operated, require no external power source and are assembled and fully loaded with MARTIN-DECKER hydraulic fluid prior to shipment. They are designed to operate within the ambient temperature range of -29O to 49OC (-20° to 12OoF).

Accuracy of the system, when shipped from the factory, is + 0.5% of full scale capacity at an ambient range ‘of 16’ to 27OC (60’ to 800F). Capacity ranges for the WS9 and WS14 systems are 2,000 to 5,000 lb; 1,000 and 2,000 kg; 1,000 and 2,000 daN. See table l-l for respective model numbers and capacities. 1.3 SYSTEM COMPONENTS. The system consists of the following basic components and attaching hardware: a. Indicator Sensater Load Cell C. Hydraulic Hose

b.

1.4 INDICATOR. The indicator provides a dial faceplate, calibrated in pounds, kilograms or dacanewtons. The indicator has a damper to smooth pointers sensitivity and adjust pointer response to the operator’s preference. Also included on each indicator is a dial adjust gear, which rotates the dial to make necessary tare adjustments.

A 0

Figure l-l.

Typical WS9 or WS14Single Line Weight Indicating System Page1

7183 -

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MARTIN-DRCI&i

LOAD CELL. The load cell transmits 1.5 a hydraulic pressure signal to the indicator by transforming the applied load into the respective pressure.

a. Check Valve - UsuaRy installed on the damper and used to replenish the hydraulic fluid in the system. In some cases, the check valve may be located elsewhere in the system.

1.6 HYDRAULIC HOSE. The type of hydraulic hose used is 3/16 inch diameter of single wire braid construction. The hydraulic hose comes standard with l/4 NPT hose connections. The hydraulic hose is available in maximum lengths of 50 feet. in a single unit, and couplings (P/N 5103) are used where extended lengths are needed to meet the job requirements.

b.

C. Hydraulic Fluid - Supplied in quart containers. W15 hydraulic fluid is to be used in the event it becomes necessary tocharge the system in the field.

ATTACHING AND 1.7 HARDWARE. The system is furnished with necessary attaching and hardware to facilitate installation and maintenance: Table l-l.

-em

Number

YA2 Hand Pump - Used for field loading the system with hydraulic fluid. Connects to the check valve.

d. Indicator Bracket - Used mounting the indicator.

for

System Capacities and Part Numbers

capacity

Ildiultor NUIIlber

serrsater NUlXlk

ws9-4-50 ws9-4-75 ws9-4-100

2,000 lb 2,000 lb 2,000 lb

GA69 GA69 GA69

E229-4 E229-4 E229-4

WS9-6-50 ws9-6-75 WS9-6-100

1,000 kg 1,000 kg 1,000 kg

GA69-6 GA69-6 GA69-6

E229-4 E229-4 E229-4

50 ft 75 ft 100 ft

ws9-10-50 ws9-10-75 ws9-10-100

1,000 daN 1,000 daN 1,000 daN

GA69-20 GA69-20 GA69-20

E229-4 E229-4 E229-4

50 ft 75 ft 100 ft

ws14-0040-50 ws14-0040-75 ws14-0040-100

4,000 lb 4,000 lb 4,000 lb

GA69-11 GA69-11 GA69-11

E427-1 E427-1 E427-1

50 ft 75 ft 100 ft

WS14-004OK-50 WS14-0040K-75 WS14-0040K-100

2,000 kg 2,000 kg 2,000 kg

GA69-15 GA69-15 GA69-15

E427-1 E427-1 E427-1

50 ft 75 ft 100 ft

WS14-0020DN-50 WS14-0020DN-75 WS14-0020DN-100

2,000 daN 2,000 d&N 2,000 daN

GA69L23 GA69-23 GA69-23

E427-1 E427-1 E427-1

50 ft 75 ft 100 ft

ws14-0050-50 ws14-0050-75 ws14-0050-100

5,000 lb 5,000 lb 5,000 lb

GA69-13 GA69-13 GA69-13

E427-1 E427-1 E427-1

50 ft 75 ft 100 ft

page2

7A3

TW554

MARTIN-DECKRR SEC’IION 2.0 INSTALLATION. The installation of 2.1 the WS9 and WS14 Single Line Weight Indicating System should be accomplished by experienced, qualified personneL The prePRE-INSTALLATION 2.2 installation procedure consists primarily of errsuring that the single line weight indicator system is the correct system to be installed. The following is to be checked: a. Determine that indicator dial is calibrated in the desired units of measurement (pounds, kilograms or decanewtons). b.

Determine that load cell capacity is suitable for the intended application.

c.

Determine that load cell and hydraulic hose are located in a position to move freely, taking into any obstructions that might interfere with the load to be measured.

d. Determine that hydraulic hose is of sufficient lenh for routing from the indicator to the load celL 2.3 SYSTEM INSTALLATION. The Single Line Weight Indicating System is comprised of the Load Cell, Hydraulic Hose and Indicator. Install these components in accordance with the instructions in the following paragraphs. 2.4 LOAD CELL INSTALLATION. The load cell is provided with connections at the top to attach to the floor block and at the bottom to attach to the Christmas tree or derrick floor, forming a pull at 90’. Calibration is based upon the cell load being equal to 141.4% of line load due to the 90’ installation (see Fig. 2-1). Accuracy will be slightly affected if this angle is not true, but the sensitivity of the system is always maintained. For mounting dimensions refer to Fig. 2-2. INDICATOR INSTALLATION. Select 2.5 location for the indicator that provides convenient visual access for the operator (see Fig. 2-3).

Ineluded Indicator Reading I Angle I Error, percent CAU~TIOI( ISIWOONCEU LOAD EauM TO 141.4% Of unf LOADDUE TO 90. IWSlALLAllOI.

80’ 85’ 9n”

95” 1000

8.3% High 4.3% High No arm, read direct 5% T.nw 4.“C., --> 9.1% Lo1n

Figure 2-l. Load Cell Mounting Configuration Page3

I

TW554

IUAR’IXN-DECKER’

7

System Number

B

A

ws9

1.25

2.25

(57mm)

ws14

(32mm) 1.75

3.25

(44mm)

(83mm)

C 1.25

(32mm) 1.75

(44mm)

D

E 6.38

*9.25

(235mm)

(162mm) 6.38

10.25

(260mm)

(162mm)

Figure 2-2. Load CeII Mounting Dimensions, Inches (Millimeters)

CAUTION

CAU’ITON

The indicator is a precision instrument and must be handled with care.

Allow sufficient slack in the hose to avoid pulling hose taut. Excess tension could cause fitting or connector failure.

a. Locate indicator mounting bracket, dri.U holes. b. Install indicator.

bracket

and

HYDRAULIC HOSE INSTALLATION. 2.6 Standard hose lengths are 50, 75 and 100 ft. The hose run from the indicator to load cell should be straight without tight bends or loops.

pege4

a. Route hose so that it will not be crushed, cut or otherwise damaged.

b. Tie hose to structures where permitted.

7A3 d’

MARTIN-DECKER

TW554

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6.75 ,I (171mm)

t

a 1

a2

Holes ’ bracket permit b:cket to be located in alternate positions shown in phantom line. Bracket be can mounted so that base extends to Indicator front as shown in phantom line.

.38 J (1Omm)

t

Figure 2-3. Overall Dimensions for Indicator and Bracket Installation, Inches (Millimeters)

MARTIN-DECKJiR

TW554 2.7

SYSTEM OPERATION

2.8 ADJUSTMENTS. The load indicating system is automatic, but two adjustments of the load cell system indicator are necessary prior to initial use of the system. ZERO LOAD POINTER 2.9 ADJUSTMENT. Adjust zero adjust knob until indicator dial reads zero with all tare loads acting on load cell. NOTE: When reading the indicator, maintain a direct and perpendicular line of sight between the eye and pointer in the eliminate order to possibility of parallax error. 2.10 POINTER DAMPING ADJUSTMENT. The damper is located external to the indicator case and has a tee handle stem for manual adjustment. a. Fully engage damper, push stem in and turn clockwise to closed position. b.

Open damper by turning stem counterclockwise two complete revolutions.

c.

If pointer is too sensitive, turn to l/2 stem clockwise l/4 revolutions.

d. If pointer is sluggish, turn damper stem counterclockwise l/4 to l/2 revolutions. e. Recheck sensitivity and repeat step c or d, as applicable, until desira sensitivity is reached.

SECTION 3.0 MAINTENANCE

The system, as MAINTENANCE. 3.1 described in this manual, requires no maintenance. However, general operating practices should include:

a. Cleaning indicator glass as necessary. This can be accomplished by using any commercially available fzl= cleaning solution and a clean, soft, lint-free cloth. b. Visual inspection of the system prior to use. Pay particular attention to the integrity of fittings and connections (no fluid leakage). Check load cell gap and ascertain that the load cell is free of obstlllctions. Should any leakage and/or malfunction be observed, refer to para. 4.0. NOTE: The maintenance repair procedures contained in this manual are the only practical procedures to be performed in the field. In situations involving a faulty component, the faulty component should be returned to any authorized MARTIN-DECKER service facility for repair and recalibration.

TROUBLESHOOTING. If during 3.2 operation an indication of system malfunction is observed (no load indication and/or sluggish, erratic or erroneous indication), see Fig. 3-l and check load cell gap (para. 3.3) in conjunction with table 3-l for tabulation of probable causes and their corrective actions. LOAD CELL GAP. (Refer to 3.3 Fig. 3-1). The load cell gap is the distance measured between the load plate and the load cell retaining ring. The nominal gap for both WS9 and WS14 systems is .44 inch (llmm) as shipped from MARTIN-DECKER. This gap can be used as a quick reference when a malfunction is suspected in the system, or when hydraulic fluid is added or reduced (Reference to para. 4.3 and 4.41, and as a comparative check against actual weight calibration. 7A3 i .i

-lUARm-DECKER

TW554

TABLE 3-l. MALFUNCTION ISOLATION MALFUNC’IlON

1

PROBABLE CAUSE

CORRECTIVE

Improper zero (tare) setting

Load Indication too high

ACTION

Adjust zero set (tare) para 2.9

I System charge overload Improper zero (tare) setting

Load Indication too low

I Insufficient

system charge

I

Loose and leaking connection

I

Obstruction hose

in

-1

Adjust zero set (tare) para 2.9 Charge system para 4.2

hose Tighten hose connection

hydraulic

Replace or clean hose Straighten hydraulic hose, eliminate tight bends, etc.

Hydraulic hose .crimped

Charge system para 4.2

Erratic or sluggish IIP dication

Correct damper setting para 2.10

I Obstruction in hose I Hydraulic hose crimped No indication

Replace or clean hose Straighten hydraulic hose, eliminate tight bends, etc.

I

Correct daqxr para 2.10

Dampers closed

Load cell/cells hydraulic fluid)

dry

(no

setting

Check load cell gap and charge system para 4.2

Hydraulic hose crimped Obstruction in hose

”:.

l/a3

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MARTIN-DECK&

LOAD PLATE AP

RETAINERRIM6

Figure 3-l. Load Cell Gap and Plug

SECTION 4.0

d. Close damper.

SYSTBMRl?PAIR

GENERAL. System repair is limited 4.1 to removing a faulty component and replacing it with one in known good condition. This section of the manual covers repairs that may be readily performed in the field and does not include detailed disassembly/assembly procedures of the indicator and load cell. Field repairs consist of charging or bleeding the hydraulic system, removing -and replaci-g the- indicator, load cell and/or hydraulic hose. BLEEDING CHARGING AND 4.2 SYSTEM. The system must be kept full of hydraulic fluid at all times to accurately indicate weight or load. A quick check for adequate fluid in system is the gap between the load cell load plate and retainer ring. (Refer to Fig. 3-l for proper gap).

f.

Fill hand pump reservoir with W15 hydraulic fluid.

NOTE: Keep hand pump reservoir at least half full at all times to avoid introducing air into system. IT* Operate hand pump plunger slowly to bleed air from pump at check valve. h. When air bubbles cease (step g) tighten hand pump to check valve connection. i.

Raise load cell to. a position slightly higher than indicator.

a. Remove all weight from load cell.

5

Loosen load cell plug (Fig. 3-l).

b. Ensure that weight hose is free of kinks and sharp bends.

k. Pump fluid into system and bleed at load cell plug until air bubbles cease to appear.

C.

Pege8

e. Attach YA2 hand pump to check valve.

Remove cap from F350-1 check valve.

1. Tighten load cell plug. 7183 i’ 1 i

TW554

MARTtN-DECKER m. Pump enough fluid into system to slightly overcharge system, loosen pipe plug and bleed to prop= gap (Fig. 4-l) when proper gap is reached, tighten the pipe plug.

HYDRAULIC FLUID REDUCTION. 4.3 Occasionally it may be necessary to reduce the quantity of hydraulic fluid in the system to achieve accuracy.

n. Disengage hand pump from check

NOTE: Use rag or other type of container to trap escaping fluid

valve.

o. Replace and tighten check valve cap.

p. Adjust ckmper (Par& 2.10).

M

necessary

a. Remove all weight from load cell.

b. Loosen plug on damper until fluid begi= to escape from fitting. Bleed fluid until cell gap is at required dimension. Tighten pipe Plug-