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20

6. Maintenance

6.6 Belt Replacement

Where a belt guard has been supplied,

please remove the belt guard before

starting work.
To change the belt (or belts), first move

the motor towards the fan by a sufficient

amount to enable the old belts to be

taken off the pulleys and the new belts to

be put on.
If the belt drive has more than one belt,

replace all belts at the same time (see

Figure 21). In such cases, use matched

belts, such as sets in which all belts are

exactly the same lengths.
Tension the belts as per Section 6.5.

Figure 21

Fenner is a registered trademark of J H

Fenner & Co Ltd.

Taper Lock and P B (Precision Built) are

registered trademarks of F P T Group.

Reproduced with permission of F P T

Group.

TO INSTALL

1. Remove the protective coating from

the bore and outside of bush, and bore

of hub. After ensuring that the mating

tapered surfaces are completely clean

and free from oil or dirt, insert bush in

hub so that holes line up.

2. Sparingly oil thread and point of grub

screws, or thread and under head of

cap screws. Place screws loosely in

holes threaded in hub.

3. Clean shaft and fit hub to shaft as one

unit and locate in position desired,

remembering that bush will nip the

shaft first and then hub will be slightly

drawn onto the bush.

4. Using a hexagon wrench, tighten

screws gradually and alternately to the

torques shown in Table 3.

5. Hammer against large end of bush,

using a block of sleeve to prevent

damage. (This will ensure that the bush

is seated squarely in the bore.) Screws

will now turn a little more. Repeat this

alternate hammering and screw

tightening once or twice to achieve

maximum grip on the shaft.

6. If a key is to be fitted, place it in the

shaft keyway before fitting the bush. It

is essential that it is a parallel key and

side fitting only, and has TOP

CLEARANCE.

7. After the drive has been running under

load for a short time, stop and check

tightness of the screws.

8. Fill empty holes with grease to exclude

dirt.

TO REMOVE

1. Slacken all screws by several turns.

Remove one or two according to the

number of jacking off holes. Insert

screws in jacking off holes after oiling

thread and point of grub screws or

thread and under head of cap screws.

2. Tighten screws alternatively until bush

is loosened in hub and assembly is

free on shaft.

3. Remove assembly from shaft.

Table 3 – Torque Settings

Bush Size

1008

1108

1210

1610

2012

2517

3020

3525

4030

4535

5040

Screw Tightening Torque (Nm)

5.6

5.6

20

20

30

50

90

115

170

190

270

Screw Details

Quantity

2

2

2

2

2

2

2

3

3

3

3

Size (BSW)

1/4"

1/4"

3/8"

3/8"

1/16"

1/2"

5/8"

1/2"

5/8"

3/4"

7/8"

Hexagon Socket Size (mm)

3

3

5

5

5

6

8

10

12

14

14

Large End Diameter (mm)

35.0

38.0

47.5

57.0

70.0

85.5

108.0

127.0

146.0

162.0

177.5

Approximate Mass (kg)

0.1

0.1

0.2

0.3

0.7

1.5

2.7

3.8

5.6

7.5

11.1

Fenner is a registered trademark of J H Fenner & Co Ltd.

Taper Lock and P B (Precision Built) are registered trademarks of F P T Group.

Reproduced with permission of F P T Group.

CLCH-SVX05A-GB

Содержание CLCH

Страница 1: ...Installation Operation Maintenance CLCH QuantumClimate Changer Air Handling Units CLCH SVX05A GB...

Страница 2: ...l inspect the unit before signing the delivery note Specify any damage on the delivery note and send a registered letter of protest to the last carrier of the goods within 72 hours of delivery Notify...

Страница 3: ...18 23 1 Introduction 2 Delivery Check On Arrival Off Loading and Movement To The Site 3 Foundations and Erection 4 Assembly and Installation 5 Commissioning Procedure 6 Maintenance 7 Troubleshooting...

Страница 4: ...CLCH SVX05A GB 4 1 Introduction Please pay particular attention to the instructions on the unit in accordance with the identification label assembly drawings and special warnings or advice labels...

Страница 5: ...ff Loading A specific lifting method for offloading the units is recommended as follows see Figure 3 1 52 mm diameter lifting holes or certified lifting lugs are provided on the unit base frame 2 ALL...

Страница 6: ...ainst the unit base frame The lift point should be as near as possible to the centre of gravity see Figures 4 and 4a In the case of larger units the use of several forklift trucks may be required 2 4...

Страница 7: ...d the unit to ensure that correct operation and effective maintenance can be carried out Figure 6 gives recommended space allowances On the designated access side of the unit working areas must be equ...

Страница 8: ...O PROVIDE A LEVEL PLINTH OR SUPPORT WILL RESULT IN DOORS JAMMING AND AIR LEAKS FROM THE CASING 3 2 Erection To minimize noise transmission insulation material such as cork slabbing TICO pads may be pl...

Страница 9: ...to manoeuvre the sections together Greased skid plates will greatly assist the whole assembly operation 4 Secure the break point joint externally by replacing the 4 M6 bolts and washers which were pr...

Страница 10: ...e the units together Also fix into position any base frame unit end and roof joining brackets that are provided Fix into position any internal joining strips and or brackets that are provided and then...

Страница 11: ...reak by means of a tun dish must be fitted immediately after the trap Figure 12 Typical Air Conditioning Plant Drain Figure 12 Notes 1 Cooling coil humidifier or chilled battery 2 Vented drainage stac...

Страница 12: ...ns 1 2 pipe diameter insulation Figure Notes 1 Minimum of 12 mm 2 12 mm maximum total static pressure Figure 15 Drip Pans 1 1 2 2 3 4 5 Drip Pans A UPVC elbow and 1 1 2 38 mm diameter internal dimensi...

Страница 13: ...ntrol system used All pipework must be supported independently from the coils All connections must be made in such a way that the expansion and contraction of pipes do not impose forces on the coil he...

Страница 14: ...the casing must be made with a gland or grommet All wiring to other accessories must be carried out in the same manner PLEASE REFER TO THE UNIT MOUNTED CONTROLS IOM Motor connection details are conta...

Страница 15: ...0 70 0 85 5 108 0 127 0 146 0 162 0 177 5 Approximate Mass kg 0 1 0 1 0 2 0 3 0 7 1 5 2 7 3 8 5 6 7 5 11 1 Fenner is a registered trademark of J H Fenner Co Ltd Taper Lock and P B Precision Built are...

Страница 16: ...device will fade 16 5 Commissioning Procedure 5 4 Unit Connections All electrical water and ductwork connections of the unit must be completed by a qualified person To avoid damaging the coil connect...

Страница 17: ...ork the unit is started up for a test run To conduct a test run that involves the measurement of motor and fan performance the unit must be connected to the complete installation All access doors must...

Страница 18: ...A GREASE 3 SHELL MOBILUX 3 MOBIL BEACON 3 ESSO SKF 28 BALL BEARING GREASE Do not overlubricate bearings Excessive pressure caused by overlubrication can displace bearing grease seals or cause grease t...

Страница 19: ...80 140 112 236 224 375 56 80 125 200 to to to to to to to to to to to to 95 130 132 200 224 315 355 560 100 140 200 400 Newton N 13 20 25 35 45 65 85 115 5 10 20 40 to to to to to to to to to to to to...

Страница 20: ...end of bush using a block of sleeve to prevent damage This will ensure that the bush is seated squarely in the bore Screws will now turn a little more Repeat this alternate hammering and screw tighten...

Страница 21: ...n the unit is at rest and check the function of the fan overrun in this context 6 8 5 Direct expansion coils Never use hot water or steam to clean these coils During normal operation the fin block mus...

Страница 22: ...6 1 For Corrosion Yes 6 1 Flexible Connection Yes 6 1 Anti Vibration Mounts Yes 6 1 Inlet Guide Vane Controller Yes Drainage Yes 6 1 Fan Bearing Yes 6 2 Motors In General Yes 6 3 Motor Bearing Yes 6 3...

Страница 23: ...r grease on belts Clean belts and pulleys check for grease leaks Belts rubbing Remove obstruction Odd belts being fitted Replace with full set Filters collapsing Blocked with dirt Change at advised di...

Страница 24: ...vement it reserves the right to change design and specifications without notice Only qualified technicians should perform the installation and servicing of equipment referred to in this publication So...

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