Installation Manual - MK Electric

mkelectric.com

Installation Manual - MK Electric

CONTENTS Page

A Introduction 2

B Product Range 3

C Safety Instructions 5

D Installation 6

E Operating Instructions 18

Masterseal

Switch Modules, Enclosures,

Neon Indicator Modules

56420 GRY, 56421 GRY, 56422 GRY, 56836, 56881, 56882,

56883, 56889, 56891, 56892, 56893, 56896, 56910, 56915.

Page

F Testing 19

G Fault Diagnosis 20

H Service and Maintenance 22

I Disposal Instructions 23

J Guarantee 23

Please leave this leaflet with the 1 consumer for future reference

C. SAFETY INSTRUCTIONS

1. It is essential that, prior to installation or maintenance, the

user/installer disconnects the electrical supply before

commencing work.

2. This product should be installed by a competent person

(e.g. a qualified electrician) in accordance with the instructions

supplied with the product and in accordance with the

appropriate clauses of the current edition of the IEE wiring

regulations (BS 7671).

3. It is essential that all connections are made as instructed, that

cables are not stressed and that terminals are fully tightened .

4. All switches, except push switches, do not have to be derated

when used with fluorescent or inductive loads. All switches

conform to BS3676 Pt. 1 1989

5. If metal conduit enters the back box in more than one position,

earth continuity must be maintained.

6. These products conform to their relevant British Standards,

Switches BS 3676 Pt.1 and Neons BS 5733, are manufactured in

accordance with BS EN ISO 9002 and comply with the LV

(72/23/EEC) Directive.

3. Drill out the drain hole if required (see Fig. 1). The complete

profile should be filed out taking care not to damage the small

internal wall.

Drain Hole

5

Figure 1

9

TOP

Conduit Entry

Blank

A. INTRODUCTION

Congratulations on the purchase of another quality MK product.

The Masterseal range consists of surface mounted switches, 13A

socket outlets, a photo-electric switch, an RCD protected socket

outlet and enclosures to accommodate various modules.

The various modules comprise 10A and 20A switches, 240V and 24V

neons.

Switches and enclosures are provided with a fluorescent locator

neon that remains lit regardless of the switch position.

Made from a tough thermoplastic material, the Masterseal range of

products are robust and suitable for use indoors and outdoors,

wherever corrosion resistance, dirt and moisture proofing is required.

All products accept MK push-in conduit and cable entries, which

compliment the range (see Service Items).

Switch products and enclosures meet a rating of IP56.

If you are in any doubt regarding the application or installation of this

product, please contact MK Technical Sales Service Department on

01268 563720 or your local MK Representative.

D. INSTALLATION

2

NOTES:

1. The enclosure should only be mounted in the vertical plane on a

flat surface from which all grease, dirt and loose material has

been removed.

2. Position back box ensuring that one of the drain hole features is

located at the bottom left hand corner.

3. Prior to mounting the enclosure, the blank fitted at the required

cable entry, should be removed and replaced with the desired

conduit entry or coupler (see Service Items).

4. If conduit enters from the top or side of the enclosure, the drain hole

must be drilled out using a 5mm diameter drill bit, to allow any

condensation formed in the conduit system to drain out of the unit.

Opening of the drain hole will reduce the IP rating, therefore ensure that

jetted water is not directed at the unit if the drain hole is used.

5. Drain holes should not be drilled out if the product is to be

located in an excessively dusty environment (eg. a sawmill). Only

bottom conduit entry should be used.

6. If conduit enters from the bottom of the enclosure, and it is

necessary for the IP rating of the product to be retained, a

condensate hole of at least 5mm diameter must be provided at

the lowest point of the conduit run.

4. Using the dimensions in Fig. 2, mark the positions of the screw

fixing holes ensuring that conduit or cable is aligned with the

appropriate centre line on the diagram.

5. Drill the screw fixing holes to accept an appropriate wall fixing.

26.25mm

Centre

Line of

Conduit or

Cable

Entry

6

77.5mm

38.75mm

Figure 2

10

52.5mm

B. PRODUCT RANGE

10A SWITCH MODULES

List No. Description Max.

Rated Current

56881 1 Way S.P. 10AX

56882 2 Way S.P. 10AX

56883 1 Way D.P. 10AX

20A SWITCH MODULES

List No. Description Max.

Rated Current

56891 1 Way S.P. 20AX

56892 2 Way S.P. 20AX

56893 Intermediate 20AX

56896 1 Way D.P. 20AX

3

7. Metal conduit can be earthed using the earth lead adaptor

(see Service Items).

8. If wiring directly into the unit without using conduit ensure that

a cable specified for outdoor use is used with the cable entry.

9. PVC cable entry should only enter from the bottom of the enclosure

using the cable entry.

10. If used, conduit must be sealed to the conduit entry using a nonsetting

conduit adhesive such as Egaweld No. 2. It is not

necessary to apply adhesive to the enclosure/conduit joint.

11. A locator is provided on all switch products and is intended to

remain lit at all times regardless of the switch position, if wired

as shown in Fig. 5, page 16. Replacement locators are available

(see Product Range list for details).

12. Use No. 8 wood screws for fixing box to wall.

13. WARNING: Do not allow any form of paint or wood

preservative to come into contact with any part of these

products, as they may damage the plastics used.

These products can safely be mounted on surfaces coated

with paint/preservative when they are dry.

WARNING: ALWAYS ENSURE THAT THE MAINS SUPPLY IS

DISCONNECTED BEFORE COMMENCING WORK.

7

SWITCH MODULES

Procedure for Installing Modules

Notes:

1. The modules are intended to be installed once only. If removed

from the front plate and re-installed the effectiveness of the snap

fit will be impaired and may reduce the performance of the

product.

2. If the membrane seal is not in the correct position the IP rating

of the product may be affected.

Once you have decided on the type of enclosure and modules you

wish to use, proceed as follows:

1. Remove the front plate from the enclosure.

2. Clip the required modules onto the front plate from the back

ensuring that the “TOP” marking on the module is adjacent to

the “TOP” marking on front plate (see Fig. 3). When fitting a

single module, this should be fitted on the left hand side (as

viewed from the back).

3. Ensure that the module clips are securely latched to the lugs on

the rear of the front plate (see Fig. 3).

11

ENCLOSURES

List No. Description Dimensions

H x W x D (mm)

56420 1 Gang Switch 95 x 95 x 38

56421 1 Gang Switch and Neon 95 x 95 x 38

56422 2 Gang Switch 95 x 95 x 38

NEON INDICATOR MODULES

56889 240V RED

SERVICEABLE ITEMS

56890 Neon Locator 31 x 7 (Dia)

56460 Entry Blank 26.9 (Dia) x 5.25

56461 PVC Cable Entry 26.9 (Dia) x 28

56462 20mm Plain Conduit Entry 26.9 (Dia) x 28

56463 20mm Threaded Conduit Entry 26.9 (Dia) x 28

56464 Box Coupler 26.9 (Dia) x 16.5

9933 M20 Earth Lead Adaptor

4

INSTRUCTIONS

1. Remove front plate from the enclosure.

2. Push out the blank fitted to the required cable entry point and

replace with the desired conduit entry or coupler (see Fig. 1).

Note: The entries will be easier to insert if warmed in the hand

prior to manipulating into the box. Ensure that the groove on the

entry is fully located onto the box wall.

Location of

single module

Press to

Latch

TOP

8

Figure 3

12

TOP


4. If a neon indicator module is being used, ensure that the neon is

located on the correct side of the front plate (see Fig. 4) as

indicated by the membrane seal. Neon modules are installed as

described on pages 12 and 13.

TOP

NEON

Figure 4

13

SWITCH

PROCEDURE FOR REMOVING THE MODULES

If a module is found to be faulty or unserviceable and requires

replacement, proceed as follows:

1. Using a flat bladed screwdriver carefully lever the uppermost

module clips upwards over the front plate lugs and remove

module (see Fig. 7).

2. If the module clips break during this procedure ensure that all

loose parts are removed from the product.

Figure 7

17

TOP

TOP

REPLACEMENT OF NEON LOCATOR

Note:

The neon locator should be replaced whenever it is found to be

unserviceable.

Replacement locators are available (refer to Product Range

List/Serviceable Items).

To replace a neon locator proceed as follows:

(a) Switch off and disconnect the mains supply to the product.

(b) Remove the front plate and disconnect the locator wires.

(c) Using a flat bladed screwdriver remove and discard the

faulty locator referring to Fig. 9.

(d) Fit new locator, pushing into place, and, referring to Fig. 5,

wire in position.

(e) Refit front plate and reconnect and switch on the mains

supply to the product.

21

5. Locate the conduit or cable in the required entry and screw the

back box to the wall.

6. Fit the required modules to the front plate (see page 12).

7. Before fitting front plate ensure that the holes in the box seal are

aligned with the fixing screw holes and the slot around the seal

is aligned with the ribs in the enclosure.

8. Refer to the wiring diagram (Fig. 5) and wire in position. Ensure

that wires are of sufficient length to allow easy access to rear of

front plate, but short enough to fit comfortably inside enclosure

when front plate is secured.

Note: If the enclosure seal is not correctly positioned the IP rating of

the product may be affected.

14

E. OPERATING INSTRUCTIONS

1. Press lower edge of rocker until engaged in ON position

(see Fig. 8).

2. On those products fitted with a neon indicator ensure that the

indicator lights when the switch is ON.

3. On units fitted with Press Switches ensure that the rocker

returns to the OFF position when released.

Press

Figure 8

18

Figure 9

H. SERVICE AND MAINTENANCE

CLEANING

1. The exterior of the products should only be cleaned using a

solution of mild detergent (eg. washing-up liquid) and warm water.

2. Polycarbonate is a highly durable material which is ideal for use

in most environments. However you should seek advice from

MK Technical Sales Service Department before installing in

environments where chemicals, synthetic oils or harsh cleaners

are likely to be used.

22

LOAD LOAD

L1 L2

Locator

Neutral

L NBlock

SUPPLY

1 GANG

S.P. 1 WAY

56881 / 56891

LOAD

L

F. TESTING

LOAD

L

Locator

Neutral

L NBlock

SUPPLY

1 GANG

S.P. 2 WAY

56882 / 56892

L L

Locator

Neutral

NBlock

SUPPLY

INTERMEDIATE

56893

Figure 5

15

LOAD

L

LOAD

L N

Locator

L N

SUPPLY

1 GANG

D.P. 1 WAY

56883 / 56896

Indicator

Neutral

L NBlock

SUPPLY

1 GANG AND

NEON INDICATOR

56421

Neutral

Block

Note: Completed installation should be tested in accordance with

the latest edition of the IEE wiring regulations (BS 7671).

J. GUARANTEE

19

I. DISPOSAL INSTRUCTIONS

Product and packaging should be disposed of via civic amenity

facilities at the end of its useful life.

The company undertakes to replace or repair at its discretion

products should they become defective within 20 years in the case of

electromechanical Wiring Device products and 10 years in the case

of mains related electronic Wiring Device products and all Circuit

Protection and Cable Management products solely as a result of

faulty materials and or workmanship. Understandably if the product

has not been installed or maintained in accordance with the

company’s instructions, has not been used appropriately or if any

attempt has been made to rectify, dismantle or alter the product in

any way the guarantee will be invalidated.

This Guarantee states the company’s entire liability. It does not

extend to cover consequential loss or damage or installation costs

arising from the defective product. This Guarantee does not restrict

or infringe the normal statutory or other rights of the consumer.

23

9. Fit the front plate to the enclosure. Do not overtighten the front

plate fixing screws (see Fig. 6).

Front Plate Fixing Screws

G. FAULT DIAGNOSIS

Figure 6

16

SWITCH PRODUCTS

1. If the service (e.g. lights) connected to the product fails to

operate, check the service is functioning, the wiring is correct

and the main fuse is intact. Then either contact your local

electrician or proceed as follows:

(a) Switch off and disconnect the mains supply to the switch.

(b) Remove front plate and check that wiring is correct in

accordance with the relevant wiring diagram and all

terminals are sufficiently tightened.

(c) Replace front plate, reconnect and switch on mains and

check operation of service (e.g. lights).

(d) If service (e.g. lights) still fails to operate, switch off and

disconnect mains supply and contact MK Electric Technical

Sales Service Department or your local MK Representative.

2. If, on those products fitted with neon indicators, the indicator

fails to light, the complete neon module should be replaced.

Contact MK Electric Technical Sales Service Department or your

local MK Representative.

20

MK Electric wishes to make it clear that it owns all the original

designs of the products which it manufactures (whether or not listed

in this leaflet) and that it will take all necessary legal action in any

part of the world against any party found to be manufacturing,

distributing, selling or otherwise dealing with any article which

infringes the company’s copyrights or patents in its products, or any

other right of the company therein.

Registered Design No. Patent Pending

2025117 9300338

Design Right M.K. Electric Ltd.

It’s simply safer to say MK

MK Electric Limited

The Arnold Centre, Paycocke Road, Basildon, Essex SS14 3EA

Telephone 01268 563000 Facsimile 01268 563563 (UK Sales)

Facsimile 01268 563360 (International)

email: more@mkelectric.co.uk

Web site: www.mkelectric.co.uk

All marks in this document identified with a ® or symbol

adjacent to the mark are Trade Marks of MK Electric Limited 40433PL Ed.6

24

®

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