Invacare Reliant 450, Reliant 600 User manual

4.8 (4)

Invacare® Reliant™ 450 RPL450-2

Invacare® Reliant 600 RPL600-2

Electric Mobile Patient Lift

User Manual

 

EN

 

 

 

 

 

 

This manual MUST be given to the user of the product.

BEFORE using this product, read this manual and save for future reference.

© 2013 Invacare Corporation. All rights reserved. Republication, duplication or modification in whole or in part is prohibited without prior written permission from Invacare. Trademarks are identified by ™ and ®. All trademarks are owned by or licensed to Invacare Corporation or its subsidiaries unless otherwise noted.

Electric Portable Patient Lift

2

Part No. 1145810

User Manual

Electric Mobile Patient Lift

DEALER: This manual MUST be given to the user of the product.

USER: BEFORE using this product, read this manual and save for future reference.

1

GENERAL

5

 

Symbols ........................................................................................................

5

 

Warnings................................................................................................

5

 

Limited Warranty ......................................................................................

6

2

SAFETY

7

 

General Guidelines ....................................................................................

7

 

Operating Information..............................................................................

7

 

General...................................................................................................

7

 

Pinch Points and Positioning..............................................................

8

 

Assembling the Lift ..............................................................................

8

 

Operating the Lift ................................................................................

8

 

Using the Sling ......................................................................................

9

 

Lifting the Patient .................................................................................

9

 

Transferring the Patient ..................................................................

10

 

Performing Maintenance..................................................................

10

 

Electrical and Grounding.................................................................

11

 

Disposal...............................................................................................

11

 

Radio Frequency Interference..............................................................

11

3

PRODUCT LABELING

12

4

TECHNICAL DATA

13

 

Patient Lift.................................................................................................

13

 

Full Body, Divided Leg and Toileting Slings.......................................

14

 

Reliant Scale RLS6...................................................................................

14

5

ASSEMBLY

15

 

Introduction..............................................................................................

15

 

Unpacking the Patient Lift .....................................................................

15

 

Assembling the Mast to the Base.........................................................

16

 

Assembling the Boom Actuator...........................................................

17

 

Installing the Leg Actuator to the Base..............................................

18

 

Mounting the Battery Charger.............................................................

19

6

OPERATION

20

 

Introduction..............................................................................................

20

 

Using the Hand Control Buttons ........................................................

20

 

Raising/Lowering the Boom............................................................

20

 

Opening/Closing the Legs ...............................................................

20

 

Activating a Mechanical Emergency Release .....................................

21

 

Performing an Emergency Stop............................................................

22

 

Charging the Battery ..............................................................................

23

7

LIFTING THE PATIENT

24

 

Introduction..............................................................................................

24

 

Positioning the Patient Lift ....................................................................

24

 

Attaching a Sling.......................................................................................

25

 

Lifting/Moving the Patient......................................................................

26

Part No. 1145810

3

Electric Portable Patient Lift

CONTENTS

 

8

TRANSFERRING THE PATIENT

28

 

Introduction .............................................................................................

28

 

Transferring to a Commode Chair.....................................................

29

 

Transferring to a Standard Commode...............................................

30

 

Transferring to a Bathing Unit .............................................................

30

 

Transferring to a Wheelchair...............................................................

31

9

TROUBLESHOOTING

32

10

MAINTENANCE

33

 

Maintenance Safety Inspection Checklist...........................................

33

 

Lubricating the Lift..................................................................................

35

 

Detecting Wear and Damage...............................................................

36

 

Cleaning the Sling and the Lift..............................................................

36

 

Replacing the Boom Actuator..............................................................

36

 

Checking and Tightening Mast Pivot Bolt..........................................

37

 

Replacing the Hanger bar......................................................................

38

 

Maintaining the Base Adjustment ........................................................

39

 

Replacing Casters/Forks ........................................................................

40

 

Replacing Rear Casters....................................................................

40

 

Replacing Front Casters ..................................................................

41

 

Replacing Forks .................................................................................

41

11 ACCESSORIES

42

Reliant Scale RLS6 ...................................................................................

42

Removing the Hanger bar ...............................................................

42

Installing the Reliant Scale ...............................................................

44

Operating the Scale ................................................................................

46

Keypad Functions ..............................................................................

46

Weighing the Patient ..............................................................................

47

Replacing the Battery .............................................................................

48

Calibrating the Reliant Scale ...........................................................

49

Troubleshooting ......................................................................................

50

Display Codes ....................................................................................

50

Electric Portable Patient Lift

4

Part No. 1145810

1 GENERAL

1 General

1.1Symbols

Warnings

Signal words are used in this manual and apply to hazards or unsafe practices which could result in personal injury or property damage. See the information below for definitions of the signal words.

!

DANGER

Danger indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING

Warning indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION

Caution indicates a potentially hazardous situation which, if not avoided, may result in property damage or minor injury or both.

IMPORTANT

Indicates a hazardous situation that could result in damage to property if it is not avoided.

Gives useful tips, recommendations and information for efficient, trouble-free use.

Part No. 1145810

5

Electric Portable Patient Lift

1 GENERAL

1.2Limited Warranty

PLEASE NOTE: THE WARRANTY BELOW HAS BEEN DRAFTED TO COMPLY WITH FEDERAL LAW APPLICABLE TO PRODUCTS MANUFACTURED AFTER JULY 4, 1975.

This warranty is extended only to the original purchaser/user of our products.

This warranty gives you specific legal rights and you may also have other legal rights which vary from state to state.

Invacare warrants the products manufactured to be free from defects in materials and workmanship for a period of three years on the lift and one year on the slings and electric components from the date of purchase. If within such warranty period any such product shall be proven to be defective, such product shall be repaired or replaced, at Invacare’s option. This warranty does not include any labor or shipping charges incurred in replacement part installation or repair of any such product. Invacare’s sole obligation and your exclusive remedy under this warranty shall be limited to such repair and/or replacement.

For warranty service, please contact the dealer from whom you purchased your Invacare product. In the event you do not receive satisfactory warranty service, please write directly to Invacare at the address on the back cover, provide dealer’s name, address, date of purchase, indicate nature of the defect.

Invacare Corporation will issue a serialized return authorization. The defective unit or parts MUST be returned for warranty inspection using the serial number, when applicable as identification within 30 days of return authorization date. Do not return products to our factory without our prior consent. C.O.D. shipments will be refused; please prepay shipping charges.

LIMITATIONS AND EXCLUSIONS: THE FOREGOING WARRANTY SHALL NOT APPLY TO SERIAL NUMBERED PRODUCTS IF THE SERIAL NUMBER HAS BEEN REMOVED OR DEFACED, PRODUCTS SUBJECTED TO NEGLIGENCE, ACCIDENT, IMPROPER OPERATION, MAINTENANCE OR STORAGE, PRODUCTS MODIFIED WITHOUT INVACARE’S EXPRESS WRITTEN CONSENT (INCLUDING, BUT NOT LIMITED TO, MODIFICATION THROUGH THE USE OF UNAUTHORIZED PARTS OR ATTACHMENTS; PRODUCTS DAMAGED BY REASON OF REPAIRS MADE TO ANY COMPONENT WITHOUT THE SPECIFIC CONSENT OF INVACARE, OR TO A PRODUCT DAMAGED BY CIRCUMSTANCES BEYOND INVACARE’S CONTROL, AND SUCH EVALUATION WILL BE SOLELY DETERMINED BY INVACARE. THE WARRANTY SHALL NOT APPLY TO PROBLEMS ARISING FROM NORMAL WEAR OR FAILURE TO ADHERE TO THE INSTRUCTIONS IN THIS MANUAL.

THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ANY OTHER EXPRESS WARRANTIES. IMPLIED WARRANTIES, IF ANY, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL NOT EXTEND BEYOND THE DURATION OF THE EXPRESSED WARRANTY PROVIDED HEREIN AND THE REMEDY FOR VIOLATIONS OF ANY IMPLIED WARRANTY SHALL BE LIMITED TO REPAIR OR REPLACEMENT OF THE DEFECTIVE PRODUCT PURSUANT TO THE TERMS CONTAINED HEREIN. INVACARE SHALL NOT BE LIABLE FOR ANY CONSEQUENTIAL OR INCIDENTAL DAMAGES WHATSOEVER.

SOME STATES DO NOT ALLOW EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGE, OR LIMITATION ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE EXCLUSIONS AND LIMITATIONS MAY NOT APPLY TO YOU.

THIS WARRANTY SHALL BE EXTENDED TO COMPLY WITH STATE OR PROVINCIAL LAWS AND REQUIREMENTS.

Electric Portable Patient Lift

6

Part No. 1145810

2 SAFETY

2 Safety

The Safety section contains important information for the safe operation and use of this product.

2.1 General Guidelines

WARNING

DO NOT use this product or any available optional equipment without first completely reading and understanding these instructions and any additional instructional material such as owner’s manuals, service manuals or instruction sheets supplied with this product or optional equipment. If you are unable to understand the warnings, cautions or instructions, contact a healthcare professional, dealer or technical personnel before attempting to use this equipment - otherwise, injury or damage may occur.

ACCESSORIES WARNING

Invacare products are specifically designed and manufactured for use in conjunction with Invacare accessories. Accessories designed by other manufacturers have not been tested by Invacare and are not recommended for use with Invacare products.

!NOTICE

THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE.

Check all parts for shipping damage before using. In case of damage, DO NOT use the equipment. Contact the Dealer for further instructions.

2.2Operating Information

General

WARNING

The Invacare patient lift is NOT a transport device. It is intended to transfer an individual from one resting surface to another (such as a bed to a wheelchair). Otherwise injury or damage may occur.

DO NOT attempt any transfer without approval of the patient’s physician, nurse or medical assistant. Thoroughly read the instructions in this Owner’s Manual, observe a trained team of experts perform the lifting procedures and then perform the entire lift procedure several times with proper supervision and a capable individual acting as a patient.

Use common sense in all lifts. Special care MUST BE taken with people with disabilities who cannot cooperate while being lifted.

Invacare slings and patient lift accessories are specifically designed to be used in conjunction with Invacare patient lifts. Slings and accessories designed by other manufacturers are not to be utilized as a component of Invacare’s patient lift system.

If the patient lift is exposed to extreme temperature (above 100°F or below 32°F), high humidity and/or becomes wet, prior to use, ensure handgrips do not twist on patient lift handle - otherwise damage or injury may occur.

Part No. 1145810

7

Electric Portable Patient Lift

2 SAFETY

Pinch Points and Positioning

Pinch points exist between boom and hanger bar. Pinch points also exist at base of lift. When positioning lift, be

aware of the position of the hanger bar and the patient. Injury could occur.WARNING

Assembling the Lift

DO NOT overtighten mounting hardware. This will damage mounting brackets.WARNING

Between Boom

and hanger

Base of Lift

Operating the Lift

Although Invacare recommends that two assistants be used for all lifting preparation, transferring from and transferring to procedures, our equipment will permit proper operation by one assistant. The use of one assistant is based on the evaluation of the health care professional for each individual case.

Make sure there is an audible click when mounting battery on the battery charger to confirm proper mounting. Otherwise, injury or damage may occur.

DO NOT exceed maximum weight limitation of the patient lift. The weight limitation for the RPL450-2 is 450 lbs. The weight limitation for

the RPL600-2 is 600 lbs. ALWAYS keep hands and fingers clear of moving parts to avoid injury.WARNING

Electric Portable Patient Lift

8

Part No. 1145810

2 SAFETY

Using the Sling

Use an Invacare approved sling that is recommended by the individual’s doctor, nurse or medical assistant for the comfort and safety of the individual being lifted.

DO NOT use any kind of plastic back incontinence pad or seating cushion between patient and sling material that may cause the patient to slide out of the sling during transfer.

After each laundering (in accordance with instructions on the sling), inspect sling(s) for wear, tears, and loose stitching. Bleached, torn, cut, frayed, or broken slings are unsafe and could result in injury. Discard immediately.

DO NOT alter slings.

Be sure to check the sling attachments each time the sling is removed and replaced, to ensure that it is properly attached before the patient is removed from a stationary object (bed, chair or commode).

If the patient is in a wheelchair, secure the wheel locks in place to prevent the chair from moving forwards or backwards.

When connecting slings equipped with color coded straps to the patient lift, the shortest of the straps MUST be at the back of patient for support. Using long section will leave little or no support for patient's back. The loops of the sling are color coded and can be used to place

patient in various positions. The colors make it easy to connect both sides of the sling equally. Make sure that there is sufficient head support when lifting a patient.WARNING

Lifting the Patient

When using an adjustable base lift, the legs MUST be in the maximum Opened/Locked position before lifting the patient.

When elevated a few inches off the surface of the stationary object (wheelchair, commode, or bed) and before moving the patient, check again to make sure that the sling is properly connected to the hooks of the hanger bar. If any attachments are not properly in place, lower the patient back onto the stationary object (wheelchair, commode, or bed) and correct this problem.

Adjustments for safety and comfort should be made before moving the patient. Patient's arms should be inside of the straps.

Invacare slings are made specifically for use with Invacare Patient Lifts. For the safety of the patient, DO NOT intermix slings and patient lifts of different manufacturers. Warranty will be voided.

During transfer, with patient suspended in a sling attached to the lift, DO NOT roll caster base over uneven surfaces that could cause the patient lift to tip over. Use steering handle on the mast at all times to push or pull the patient lift.

Invacare does not recommend locking of the rear casters of the patient lift when lifting an individual. Doing so could cause the lift to tip and

endanger the patient and assistants. Invacare does recommend that the rear casters be left unlocked during lifting procedures to allow the patient lift to stabilize itself when the patient is initially lifted from a chair, bed or any stationary object.WARNING

Part No. 1145810

9

Electric Portable Patient Lift

2 SAFETY

Transferring the Patient

WARNING

When elevated a few inches off the surface of the stationary object (wheelchair, commode, or bed) and before moving the patient, check again to make sure that the sling is properly connected to the hooks of the hanger bar. If any attachments are not properly in place, lower the patient back onto the stationary object (wheelchair, commode, or bed) and correct this problem.

Wheelchair wheel locks MUST be in a locked position before lowering the patient into the wheelchair for transport. Before transferring, check that the wheelchair weight capacity can withstand the patient's weight.

Be sure to check the sling attachments each time the sling is removed and replaced, to ensure that it is properly attached before the patient is removed from the bed or chair.

Mast pivot under the rubber boot must be tight to ensure safe use of the patient lift. Bolt must be checked at least every six months in conjunction with periodic maintenance.

Performing

Maintenance

WARNING

Maintenance MUST be performed ONLY by qualified personnel.

After the first year of use, the hooks of the hanger bar and the mounting brackets of the boom should be inspected every three months to determine the extent of wear. If these parts become worn, replacement must be made.

Casters and axle bolts require inspections every six months to check for tightness and wear.

After the first twelve months of operation, inspect the hanger bar and the eye of the boom (to which it attaches) for wear. If the metal is worn, the parts MUST be replaced. Make this inspection every six months thereafter.

Regular maintenance of patient lifts and accessories is necessary to assure proper operation. DO NOT overtighten mounting hardware. This will damage mounting brackets.

After the first six months of operation, inspect all pivot points and fasteners for wear. If the metal is worn, the parts MUST be replaced. Make this inspection every six months.

Electric Portable Patient Lift

10

Part No. 1145810

2 SAFETY

Electrical and Grounding

 

 

WARNING

 

GROUNDING INSTRUCTIONS

 

 

 

 

 

 

DO NOT, under any circumstances, cut or remove the round grounding prong from any plug used with or for Invacare products. Some

 

 

 

devices are equipped with three-prong (grounding) plugs for protection against possible shock hazards. Where a two-prong wall receptacle

 

 

 

is encountered, it is the personal responsibility and obligation of the customer to contact a qualified electrician and have the two-prong

 

 

 

receptacle replaced with a properly grounded three-prong wall receptacle in accordance with the National Electrical Code. If you must use

 

 

 

an extension cord, use ONLY a three-wire extension cord having the same or higher electrical rating as the device being connected. In

 

 

 

addition, Invacare has placed RED/ORANGE warning tags on some equipment. DO NOT remove these tags.

 

 

 

Carefully read battery/battery charger information prior to installing, servicing or operating your patient lift.

Disposal

 

 

 

 

 

 

 

 

WARNING

 

 

 

This product has been supplied from an environmentally aware manufacturer that complies with the Waste Electrical and Electronic

 

 

 

Equipment (WEEE) Directive 2002/96/CE.

 

 

 

DO NOT dispose of batteries in normal household waste. Device contains lead acid batteries. They MUST be taken to a proper disposal

 

 

 

site. Contact your local waste management company for information.

 

 

 

This product may contain substances that could be harmful to the environment if disposed of in places (landfills) that are not appropriate

 

 

 

according to legislation.

 

 

 

Please be environmentally responsible and recycle this product through your recycling facility at its end of life.

 

 

 

 

2.3 Radio Frequency Interference

WARNING

Most electronic equipment is influenced by Radio Frequency Interference (RFI). CAUTION should be exercised with regard to the use of portable communication equipment in the area around such equipment. If RFI causes erratic behavior, PUSH the Red Power Switch OFF IMMEDIATELY. DO NOT turn the Power Switch ON while transmission is in progress.

Part No. 1145810

11

Electric Portable Patient Lift

Invacare Reliant 450, Reliant 600 User manual

3 PRODUCT LABELING

3 Product Labeling

BEFORE using the Patient Lift, READ and UNDERSTAND the Owner’s Manual for proper operation and safety procedures.

WEIGHT LIMITATION 600 lbs.

The Invacare Patient lift is

NOT a transport device.

DO NOT roll casterbase over uneven surfaces that may cause the Patient Lift to tip over.

DO NOT lock the casters of the Patient Lift when lifting an individual. Casters MUST be left unlocked to allow Patient Lift to stabilize during lifting procedures.

USE ONLY Invacare slings and lift accessories.

For maintenance and replacement, use only components designed for this patient lift model. See the product label for model information.

Customer Service

1-800-333-6900

1070965 Rev B

Electric Portable Patient Lift

12

Part No. 1145810

 

 

 

4 TECHNICAL DATA

 

 

 

 

 

4 Technical Data

 

 

 

 

4.1 Patient Lift

 

 

 

 

 

 

 

 

 

 

450 LB. ELECTRIC

 

600 LB. ELECTRIC

 

 

 

 

 

 

 

LOW PROFILE

 

LOW PROFILE

 

 

RPL450-2

 

RPL600-2

 

 

 

 

 

 

Height at Sling Hook-up - MAX.:

74 inches

 

68 inches

 

 

 

 

 

 

Height at Sling Hook-up - MIN.:

24 inches

 

28 inches

 

 

 

 

 

 

Base Width OPEN:

 

41.0

inches

 

 

 

 

 

Base Width CLOSED:

 

26.5 inches

 

 

 

 

 

Base Height (Clearance):

 

4.5 inches

 

 

 

 

 

Base Length:

 

48.0 inches

 

 

 

 

 

Caster Size (FRONT/REAR):

 

3.0/5.0 inches

 

 

 

 

 

 

Sling Options:

3 Styles

 

1 Style

 

 

 

 

 

 

Weight Capacity:

450 lbs

 

600 lbs

 

 

 

 

 

 

Weight IN Carton:

136 lbs

 

141 lbs

 

 

 

 

 

 

Weight OUT of Carton:

109 lbs

 

115 lbs

 

 

 

 

 

 

Battery:

 

24V DC

(RCHBL)

 

 

 

 

 

Charger Input:

 

100-240V AC

 

 

 

 

 

Charger Output/Charging Time:

 

29.5V DC Max 6 hrs

 

 

 

 

 

Accessories:

 

Digital Scale

 

 

 

 

 

Audio Low Battery Alarm:

 

Yes

 

 

 

 

 

Motor Safety Devices:

 

Anti-Entrapment

 

 

 

 

 

Approx. Lifts per Charge

 

100-200 Cycles per charge

 

(Varies depending upon load and stroke):

 

 

 

 

 

 

 

 

Warranty Electronics:

 

1 Year

 

 

 

 

 

 

Part No. 1145810

13

Electric Portable Patient Lift

4 TECHNICAL DATA

4.2Full Body, Divided Leg and Toileting Slings

 

FULL BODY

FULL BODY

 

DIVIDED LEG

 

TOILETING

HEAVY

HEAVY

 

 

 

 

W/COMMODE

 

 

 

 

 

DUTY W/O

DUTY W/

 

 

 

 

 

 

 

 

 

 

 

 

COMMODE

COMMODE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R110

R111

R114

R115

R116

R117*

R100P

R100

R101

R102

R121

R140*

R141*

 

R112*

R113*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Size:

M

L

XL

M

L

XL

P

M

L

XL

L

N/A

N/A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Width:

41.5

45.5

45.5

41.5

45.4

45.5

33

37.5

41

44.5

36

45

45

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Commode Opening:

N/A

N/A

N/A

8

8

9

N/A

N/A

N/A

N/A

N/A

N/A

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Length:

54.7

60.5

65.3

54.7

60.5

65.3

59.8

62.8

67.8

72.3

37

55

55

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Commode Opening:

N/A

N/A

N/A

11

11

13

N/A

N/A

N/A

N/A

N/A

N/A

13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Back:

N/A

N/A

N/A

N/A

N/A

N/A

29.2

35.7

41.7

43.2

N/A

N/A

N/A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Weight Capacity

450

450

450

450

450

450

450

450

450

450

450

600

600

(lbs):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Slings

made of a

mesh material.

 

 

 

 

 

 

 

 

 

 

All dimensions are in inches except where noted.

 

 

 

 

 

 

 

4.3Reliant Scale RLS6

Weight Range:

Up to 600 Lbs. (272.7 Kg)

Resolution:

+/- 0.2 Lbs (.1 Kg)

Display:

Liquid Crystal Digital

Automatic Power Down:

Two (2) minutes

Size:

5-3/4 L X 3-5/8 W X 4 H

Weight:

.55 Lbs

Power:

Nine (9) Volt Alkaline battery (included)

Battery Life:

Approximately 1500 readings

Temperature Range:

50° To 104°F (10° To 40°C)

Electric Portable Patient Lift

14

Part No. 1145810

5 ASSEMBLY

5 Assembly

5.1 Introduction

WARNING

Use only Invacare parts in the assembly of this patient lift. The base legs, mast, boom assembly and the hanger bar are manufactured to specifications that assure correct alignment of all parts for safe functional operation.

5.2Unpacking the Patient Lift

1.Unpack the components from the shipping carton.

DO NOT remove the plastic wrap that secures the boom to the mast. The plastic wrap will be removed in Assembling the Boom Actuator on page 17.

DO NOT remove plastic wrap at this time

Part No. 1145810

15

Electric Portable Patient Lift

5 ASSEMBLY

5.3Assembling the Mast to the Base

WARNING

The mast may be removed from the base for storage or transporting. Each time the mast is removed and returned to the base, the mast MUST be properly secured to the base assembly.

1.If locking-type casters are on the patient lift, lock them.

2.Remove the shoulder bolt, nut and washer, that secures the mast in the U-shape cut-out of the base.

3.Position the mast in an upright position and place the mast into the U-shaped cut-out of the base.

4.Insert shoulder bolt with washers through the base and mast.

5.Secure with nut.

Step here to

Step here to UNLOCK.

LOCK.

Locking

Lever

Mast

Base

Mast

U-shaped

Cutout

Shoulder Bolt

Nut

Washers

Electric Portable Patient Lift

16

Part No. 1145810

Loading...
+ 36 hidden pages