Mettler Toledo PFK Installation guide

Quick Pit for PFK9-series, size C

Pit frame

Installation information

2

Quick Pit for PFK9-series, size C 30233017C

Contents

English

1 Safety instructions ............................................................................................... 4

1.1 General safety instructions .....................................................................................4

1.2 Safety instructions for operation in hazardous areas .................................................4

1.3 Type approval document ........................................................................................5

2 Scope of delivery ................................................................................................. 5

3 Selecting the installation location ........................................................................6

3.1 Determining the location of the weighing platform ....................................................6

3.2 Determining the location of the weighing terminal .....................................................6

4 Digging the rough pit ...........................................................................................6

5 Encasing the frame in concrete ............................................................................7

5.1 Preparing the frame ..............................................................................................7

5.2 Positioning the frame ............................................................................................8

5.3 Concreting ...........................................................................................................9

5.4 Completion ..........................................................................................................9

6 Dimensional drawings ........................................................................................10

7 Removing the load plate ....................................................................................11

Deutsch

1 Sicherheitshinweise ...........................................................................................12

1.1 Allgemeine Sicherheitshinweise ............................................................................12

1.2 Sicherheitshinweise für den Betrieb in explosionsgefährdeten Bereichen ....................12

1.3 Bauartzulassung .................................................................................................13

2 Lieferumfang .....................................................................................................13

3 Wahl des Aufstellorts .........................................................................................14

3.1 Standort der Wägebrücke bestimmen ....................................................................14

3.2 Standort des Wägeterminals bestimmen ................................................................14

4 Rohgrube herstellen ...........................................................................................14

5 Rahmen einbetonieren .......................................................................................15

5.1 Rahmen vorbereiten ............................................................................................15

5.2 Rahmen positionieren ..........................................................................................16

5.3 Betonieren ..........................................................................................................17

5.4 Fertigstellung ......................................................................................................17

6 Maßzeichnungen ...............................................................................................18

7 Lastplatte abnehmen ..........................................................................................19

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English

Quick Pit for PFK9-series, size C 30233017C

English

1 Safety instructions

1.1 General safety instructions

▲ All requirements and provisions of the building authorities as well as the recognised

rules of construction technology are to be observed.

▲ The owner-operator has to ensure that the load bearing capacity of the ground/surface

after the pit has been built is ensured.

▲ Consult an architect or a structural engineer about the dimensioning of the wall and

oor thickness as well as the reinforcement (if necessary) and to specify the quality

of the concrete.

▲ The owner-operator is responsible for sealing the masonry.

1.2 Safety instructions for operation in hazardous areas

The PFK9-series high precision weighing platforms are approved for operation in

Category3, Division 2 and Category 2, Division 1 hazardous areas. There is an increased

risk in injury and damage when using the explosion-protected weighing platforms in

a potentially explosive atmosphere. Special care must be taken when working in such

hazardous areas.

Any protective foils present in the hazardous area, e.g. on the load plate, must always be

removed.

▲ In hazardous areas, the weighing platforms may only be installed, maintained and

repaired by authorized METTLER TOLEDO service personnel.

▲ No modications may be made to the weighing platform and no repair work may be

performed on the system modules.

▲ Any weighing platform or system modules that are used must comply with the

specications contained in the installation instructions. Non-compliant equipment

jeopardizes the intrinsic safety of the system, cancels the "Ex" approval and renders

any warranty or product liability claims null and void.

▲ The safety of the weighing system is only guaranteed when the weighing system is

operated, installed and maintained in accordance with the respective instructions.

▲ Also comply with the following:

– the instructions for the system modules,

– the regulations and standards in the respective country,

– the statutory requirement for electrical equipment installed in hazardous areas in

the respective country,

– all instructions related to safety issued by the owner.

▲ The explosion-protected weighing system must be checked to ensure compliance with

the requirements for safety before being put into service for the rst time, following any

service work and every 3 years, at least.

Competence

Ex approval

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English30233017C Quick Pit for PFK9-series, size C

▲ Prevent the build-up of static electricity. Always wear suitable working clothes when

operating or performing service work in a hazardous area. Avoid strong mechanical

rubbing of the powder-coated surfaces against any material when operating in

Category 3, Division 2 and Category 2, Division 1

– Do not use protective coverings for the devices.

– Avoid damage to the system components.

– If system damage occurs, the system must be put out of operation immediately.

– Damaged system components must be replaced immediately.

▲ Only install or perform maintenance work on the weighing system in hazardous areas

if the following conditions are fullled:

– The intrinsically safe characteristic values for Category 2 and Division 1 and zone

approval of the individual components are in accord with one another.

– The owner has issued a permit ("spark permit" or "re permit").

– The area has been rendered safe and the owner's safety coordinator has conrmed

that there is no danger.

– The necessary tools and any required protective clothing are provided (danger of

the build-up of static electricity).

▲ The certication papers (certicates, manufacturer’s declarations) must be present.

▲ Lay cabling xed and securely, bending radius > 15 x cable diameter.

▲ Do not cut through cables.

▲ The explosion protected PFK9-series high precision weighing platforms may only be

operated in hazardous areas in conjunction with weighing terminals that have the

appropriate approval and interface specication.

▲ The connection cable may not be separated from the weighing terminal while it is

energized.

▲ To tighten the hexagon nut of the M12 connection cable with an appropriate tightening

torque see the product's installation manual.

▲ Before setting up the system secure the connection between weighing terminal and

weighing platform.

1.3 Type approval document

Mechanical assessment Category3 / Category2 BVS 15 ATEX H/B 002

2 Scope of delivery

➜ Check the scope of delivery for completeness:

– Pit frame

– These installation instructions

– 4 threaded rods M10

– 4 nuts M10

Operation

Installation

Additional requirements for

Category 3 / Division 2 and

Category 2 / Division 1

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English

Quick Pit for PFK9-series, size C 30233017C

3 Selecting the installation location

3.1 Determining the location of the weighing platform

➜ Do not install near doors (1).

➜ Do not install in highly frequented areas (2).

➜ Protect the weighing platform against strong air movements.

➜ Install the weighing platform at a location free of shocks and vibrations.

➜ Ensure the load-bearing capacity of the pit oor: min. 600 kg / 25 cm

2

3.2 Determining the location of the weighing terminal

➜ Do not install directly behind the weighing platform (1).

➜ Do not install directly next to the weighing platform (2).

➜ Set up the weighing terminal so that it can be read easily and is easily accessible.

Length of the weighing platform – weighing terminal connecting cable:

• PFK9__: 5 m, PFK9__APW: 10 m

• Optional 10 m or 20 m

4 Digging the rough pit

c

e

d

f

g

h

b

a

➜ Dig out the rough pit according to the specied dimensions.

Weighing platform Quick Pit Rough pit

Type a b c d g e f h

PFK98_-C 100 80 121 93 13 140 115 19

Dimensions in cm

1

2

1

7

English30233017C Quick Pit for PFK9-series, size C

Also observe the following:

• Position of the pit drainage channel for wet pits: see dimensional drawings on

Page10.

• There are 4 possible positions for connecting the connecting cable: see dimensional

drawings on Page10.

• Cable duct diameter: min. 50 mm. Do not use a right-angled pipe, but rather 2 x 45°.

5 Encasing the frame in concrete

5.1 Preparing the frame

d

1

d

1

= d

2

d

2

1. Ensure that the frame is rectangular.

This is the case when the two diagonals are identical in length. Tolerance: +/– 2 mm.

The frame may not be encased if the two diagonals differ by a greater amount!

1

2

3

2. Use a at-bladed screwdriver to fold out the wall anchors (1) (8 units) on the sides.

3. Break out the prepared cable outlet (2) at the desired side.

4. If desired, mount iron (3) for the reinforcement.

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Quick Pit for PFK9-series, size C 30233017C

5.2 Positioning the frame

5.2.1 Variant 1 – Suspending the frame with support beams in the rough pit

The support beams can be mounted both on the long and the short sides of the pit frame.

X

2

1

Y

1. Prepare the 2 support beams.

Type Distance x Minimum length Distance y Minimum length

PFK98_-C 97 170 77 98

Dimensions in cm

2. Mount the support beams on the frame. To this purpose screw the 4 threaded rods (1)

through the holes in the support beams into the frame and secure with the nuts (2).

3. If necessary, adjust using the threaded rods.

4. Suspend the frame into the rough pit.

5. Level the frame exactly by means of the threaded rods.

Note

Only an exactly levelled frame guarantees the best weighing results.

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English30233017C Quick Pit for PFK9-series, size C

5.2.2 Variant 2 – Placing the frame into the rough pit

1

2

1. Screw the 4 threaded rods (1) through the frame until they contact the bottom of the

rough pit.

2. Level the frame exactly and secure with the nuts (2).

Note

Only an exactly levelled frame guarantees the best weighing results.

5.3 Concreting

1. Encase the frame in concrete. Use the concrete quality in accordance with the

specication by the architect or structural engineer.

2. Let the concrete harden in accordance with the specications of the concrete

manufacturer.

5.4 Completion

After the concrete has hardened:

1. Screw the nuts from the threaded rods.

2. Variant 1: Turn out the threaded rod and remove with the support beams.

Variant 2: Saw/cut off the protruding threaded rods.

3. In the case of moist environments seal the masonry with suitable material.

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English

Quick Pit for PFK9-series, size C 30233017C

6 Dimensional drawings

Dry pit

2

k

1

4

1 Concrete base, approx. 15 cm deep

2 Cable duct, 2 x 45°

3 Incline min. 4%

4 Fastening possibility for iron rods as

reinforcement

Wet pit

k

3

1

2

4

7

h

a

f

b

c

e

d

g

5

6

5 Area for draining

6 Connection possibilities cable duct, 4 x

7 Covers for the locking mechanisms of the

load plate

Type a b c d e f g h k

PFK98_-C 121 93 25 25 15 25 50 34 13

Dimensions in cm

11

English30233017C Quick Pit for PFK9-series, size C

7 Removing the load plate

CAUTION

Danger of injury through heavy load plate

▲ Always remove the load plate with two persons.

▲ Wear gloves when removing the load plate.

1. Remove the side covers from the frame. Loosen the screws (1) to this purpose.

The locking mechanisms of the load plate can now be accessed.

2. Remove the load plate and after cleaning put it back on as described in the operating

instructions of the weighing platform.

3. Put the side covers back on and mount with the screws (1). Ensure that the covers

lie exactly level with the frame.

1

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www.mt.com/support

Mettler-Toledo (Albstadt) GmbH

D-72458 Albstadt

Tel. + 49 7431-14 0

Fax + 49 7431-14 232

www.mt.com

Subject to technical changes

30233017C

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product’s future:

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and preservation of value of all

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tocome.

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*30233017C*

* 30233017C*

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