Kendro Heraeus CLINIFUGE User manual

Clinifuge

120V 60 Hz

SERVICE MANUAL

®

P/N 12003539

TABLE OF CONTENTS

Section	Title	Doc.- No.		Page
1	OPERATING INSTRUCTIONS
	(not part of this manual)
1.1	Brochure	Clinifuge_E
2	SERVICE	Clinifuge_2
2.1	Servicing Schedule	"	- "	2-1/2
2.2	Trouble Shooting	"	- "	2-3/4
2.3	Test Points	"	- "	2-5
2.4	Cleaning of Instrument Parts	"	- "	2-6
2.5	Electrical Safety Check	"	- "	2-6
3	FUNCTIONAL DESCRIPTION	Clinifuge_3
3.1	Block Functions	"	- "	3-1
3.2	Functions of Main Board	"	- "	3-1
4	DIAGRAMS	Clinifuge_4
4.1	Block Diagram	"	- "	4-1
4.2	Wiring Diagrams	"	- "	4-2/3
4.3	Wiring Connection Diagrams	"	- "	4-4
4.4	Main Board 14 - Component Plan	" - "		4-5
4.5	Main Board 14 - Wiring Diagram	"	- "	4-6/8
4.6	Main Board 178 - Component Plan	" - "		4-9
4.7	Main Board 178 - Wiring Diagram	"	- "	4-10/12
5	DISASSEMBLY OF INSTRUMENT PARTS	Clinifuge_5
5.1	Housing / Casing Parts	"	- "	5-1
5.2	Electrical Components	"	- "	5-2
5.3	Drive Components	"	- "	5-3
5.4	Mechanical Components	" - "		5-3
5.5	Service Kit	"	- "	5-4
5.6	Dismantling and assembling the rotor	"	- "	5-4
6	SPARE PART FIGURES AND LISTS	Clinifuge_6
6.1	Spare Part Figures	"	- "	6-1/2
6.2	Spare Part Lists	"	- "
7	TECHNICAL BULLETINS	Clinifuge_7		7-1/6
8	Preventive Maintenance Checklist

Edition: 02	TABLE OF CONTENTS	Clinifuge
24.01.02 AH	Page: 0 - 2

CLINIFUGE®

COMPACT CENTRIFUGE

Easy to Use

The Heraeus® Clinifuge is functional and sophisticated with an ergonomic design.

It is ideal for use in medical practices, clinical and small laboratories and as a stand-by unit in large laboratories.

▼

Benefits

■Easy to Use

■Able to run wide range of most popular medical tubes

■Maintenance free

■Safe

Clinifuge

Maintenance free

The Clinifuge is equipped with a brushless motor, so there is no need to replace carbon brushes. Beside saving time and money, this also ensures clean operating conditions.

Accessories

The Clinifuge comes complete with an adapter set and an autoclavable rotor. Made of impact resistant, fiber glass reinforced polyamide, this rotor offers high stability and outstanding run characteristics.

It is easily removed for cleaning in the laboratory washing machine. An extensive range of adapters permits centrifugation of all standard 5, 7, 10 and 15 ml tubes, including the popular “Monovette”, “Vacutainer” and “VenoJect” blood collection tubes.

Safety

Samples processed in today’s laboratories often harbor unknown risks. The Clinifuge complies with international safety standards and is equipped with a lid lock, lid interlock and steel armoured guard ring.

Functions

The microprocessor controlled Clinifuge is equipped with bright digital displays and touch-pad keys for quick and easy setting of speed and run-time. The values last used are stored. To repeat a run, simply press the start key.

It is also designed with a user friendly self diagnosis system which indicates faults directly on the display.

Quality Products – Lifetime Care

Set the required speed…

…and set the required time

With the “start” button, repeat runs can easily be recalled

TECHNICAL DATA

Clinifuge	120 V version
Description	Microprocessor controlled table top centrifuge
Maximum speed (rpm)	5000
Minimum speed (rpm)	1600
Maximum RCF (x g)	2600
Minimum RCF (x g)	270
Maximum capacity (ml)	12 x 15 (glass)
Controller	Microprocessor controller for time and speed
Drive	Brushless induction motor, microprocessor controlled
Runtime	1–99 min. and continuous operation (Hold)
Program memory	Stores values last entered, unlimited
Safety	Lid lock and lid interlock, steel armoured guard ring
Design	Fibre glass reinforced polyamide housing with high noise and
	vibration insulation properties
Dimensions (H x W x D) (mm / inch)	240 x 284 x 375 / 9.5 x 11.2 x 14.8
Weight (incl. rotor) (kg / Ibs)	Approx. 10.7 / 23.5
Power consumption (W)	65

ORDER NUMBERS

Model						Order No.
Clinifuge			120 V; 60 Hz			75003539
Accessories for Clinifuge
Angle rotor1)			75003760
Max. speed (rpm)			5000
Max. RCF (x g)			2600
Max. capacity (ml)			12 x 15
Max. radius (cm)			9.65
Acceleration time (sec)			40
Braking time (sec)			45
Accessories for angle rotor 75003760
Tube volume	Type of tube		Dimension (mm)		Tubes	Type of	Adapter
(ml)			Diam. x Length		per rotor	adapter	Order No.
7	Glass tubes (DIN)		12	100	12	yellow	750032271)
15	Glass tubes (DIN)		16	100	12	4)	–
3-5	VenoJect II (Terumo)		13	75	12	cream +	750032271)
						rubber pad
7	VenoJect II (Terumo)		13	100	12	yellow	750032271)
9-10	VenoJect II (Terumo)		16	100	12	sleeves	750037633)
3-5	Vacutainer (BD)2)		13	75	12	cream +	750032271)
						rubber pad
7	Vacutainer (BD)2)		13	100	12	yellow	750032271)
7	Vacutainer (BD)		16	75	12	sleeves +	750037633)
						rubber pad	75003266
10	Vacutainer (BD)2)		16	100	12	4)	–
15	Vacutainer (BD)		16	125	6	4)	–
4	Sarstedt Monovette		11.5	83.5	12	cream	750032271)
5	Sarstedt Monovette		13	90	12	cream	750032271)
7.5	Sarstedt Monovette		15	92	12	4)	–
9	Sarstedt Monovette		16.5	92	6	rubber pad	75003762
12 (Urine)	Sarstedt Monovette		16.5	101.5	6	4)	–
Urine tubes	BD, Terumo		16	100	12	sleeves	750037633)
1) included with centrifuge		2) tube incl. Hemoguard cap			3) included with rotor		4) not necessary

The adapter set 75003227 will contain the yellow and cream adapters and rubber pads.

For Ordering or Technical Information

Asia Pacific Kendro Laboratory Products (H.K.) Limited · Hong Kong · Tel. [phone] · Fax [phone] · [e-mail]

Europe, Middle East, Africa

	Kendro Laboratory Products International Sales · Hanau · Germany · Tel. [phone] · Fax [phone] · [e-mail]
Latin America	Kendro Laboratory Products International Sales · Newtown · USA · Tel. [phone] · Fax. [phone] · [e-mail]
USA	Kendro Laboratory Products · Newtown · Tel. [phone] · Fax. [phone] · [e-mail]
Internet	http://www.kendro.com

Quality Products – Lifetime Care

Registered to ISO 9001. Kendro Laboratory Products meet or exceed stringent quality and product safety standards: CE for the European Union, and UL, cUL or CSA standards for North America. ©2000 Kendro Laboratory Products. All Rights Reserved. S00254 Printed in Germany 5C 03/00 N 4t Künzel

Service

2.1 Servicing Schedule (yearly procedure recommended)

2.1.1 Maintenance Routine without Dismantling the Centrifuge

2.1.1.1 Electrical Installation and Safety

• Switch OFF the centrifuge and disconnect the unit from power, check voltage supply and mains fusing (16 Amps, slow blow characteristic)

• Check condition of plug and wall socket - (let) replace defective parts

• Check cord condition and fixing / connection - replace or refit it

2.1.1.2 Location and Mechanical Installation

• Check the base (ground, table, lorry with lockable wheels etc.) For resonance-free and stable conditions

• Check for a well ventilated place and sufficient distances to walls or adjacent equipment, without exposure to direct sunlight

• Check the leveling of instrument (use a spirit level)

2.1.1.3 Lid Locking Mechanism and Safety

•Connect the centrifuge to power and switch ON

•Check for easy lid closing and self-acting lid opening - if in disorder, readjust lid’s swivel hinge and/or lock assembly

•Check the central rubber gasket for lid sealing and replace it, if damaged

•For checking the safety: start the centrifuge, let it shortly run and stop it, the lid must not be unlocked by the microprocessor until the “end” message is shown on the display - if safety circuit is out of function, replace the main board

2.1.1.4 Cleanliness of Spin Chamber and Motor Casing

•Open the lid and remove the rotor (for loosening turn the central winged nut anti clockwise from the motor shaft)

•Clean the spin chamber with a dry and absorbent cloth (remove all dust and moisture - see also 2.5 Cleaning)

•Check the cleanliness of the motor casing and take care of the annular slot around the motor shaft: penetrating fluids can damage the upper motor baring, remove fluids with an injector and/or absorbent paper

2.1.1.5 Rotor and Accessories Condition and Sealing

• Check the condition of rotors and accessory parts (especially all supporting or stressed partitions): the rotor and/or accessory parts must not be used any longer, if there are visible traces of mechanical damage

2.1.1.6 Rotor Fixing and Motor Shaft

•Check the trouble-free condition of the locking nut and replace it in case of malfunction

•High performance rotors made of plastic have a limited service life. Due to safety reasons they have to be exchanged after 10,000 cycles or after being in use for five years. The expiry date can be seen on the date clock in the rotor lower shell. The two-digit number in the middle represents the year and the arrow points to the expiry month. The number of cycles may be checked at any time by closing the lid and keeping both “set” keys pressed. The accumulated rotor cycles will be displayed in the speed display.

•Check the condition of the drive motor shaft: the centrifuge must not be used any longer, if the drive shaft is damaged (bend, thread is worn out, horizontal grooves etc.)

2.1.1.7 Temperature Level

•Check the air inlet underneath the lid and under the bottom plate for free ventilation, insufficient air flow will lead to temperature rise of rotor, motor and electronic parts

Edition: 03	Servicing Schedule	Clinifuge
17.04.02 AH	Page: 2-1

Service

2.1.2Maintenance Routine after Dismantling the Centrifuge Casing

2.1.2.1	Motor	Supporting Elements
• Check the		supporting and damping elements of the drive motor and replace them in case of
increased rubber abrasion or abundance of imbalance but at least every 3 years
2.1.2.2	Braking Circuit

•Check the function of the braking circuit (even brake effect)

2.1.2.3 Lead and Screwing Connection

• Check the terminal and plug connections of all leads and on all boards and electrical components, tighten all loosen screwing connections, refit or replace defective parts

• Check the screwing connections of all boards, mechanical and electrical components and retighten them if necessary (use screw locking lac for motor mounts and lid lock assembly)

2.1.2.4 Protection Earth Core and Grounding Connections

•Check the protection earth core for continuity and all grounding plug connectors

•Check isolation resistance and accessible current (see 2.5)

Edition: 03	Servicing Schedule	Clinifuge
17.04.02 AH	Page: 2-2

Service

2.2Trouble Shooting

	Error	Error Cause	Possible Error	Corrective Procedure
	Indication		Source
			Mains fuse or circuit	Check fuse or circuit breaker, replace or switch
		No mains	breaker failed	on again
			Defective mains cord	Check instrument cord, replace defective parts
		voltage supply
	Displays		Defective unit fuse or	Replace it, if fuse blows again, disconnect
			fuses on main board	electrical parts, otherwise replace main board
	remain		Faulty connection	Check connections on CPU, indicat. Board and
	dark		from indication to
		No low voltage		connecting leads, replace defective parts
			power board
		supply	Faulty indication or	Replace main board
			power board
		Motor over-	Motor temperature is	Let motor cool down, then check temperature
		temperature
		switch has	higher than 120°C	switch and leads with Ohmmeter
		tripped
	Displays	Rotor didn’t	Rotor is jammed	Check for easy rotor movement, remove any
	are
				jamming objects
	illuminated	turn
	, but drive
			Motor is jammed	Replace motor
	doesn’t
			Connections inter	Check terminal and lead connections, replace
	start	Motor didn’t	drive and main board	faulty parts
			Defective drive	Check resistance of motor windings, replace
		start		faulty parts
			Faulty condenser	Replace condenser
			Faulty main board	Remove main board completely and replace it
	Drive		Wear out of motor	Replace motor rubber mounts
		Mechanics	rubber mount
	makes
			Motor bearing	Change motor completely
	noises-no
			Defective terminal
	good			Check voltage on motor terminal and winding
	separation	Electrical	connection, faulty	resistances -see test points on boards
	result		lead or motor winding
			Defective driving	Replace main board
	Drive	No brake
	doesn’t		Faulty main board	Remove main board completely and replace it
		current
	decelerate
		Lid coil is not	Missing mains voltage	Remedy see above, manual opening only at
				standstill
		or not
	Lid cannot		PTC resistor has	After a waiting time of 1-2 minutes press key
		sufficiently
	be opened		released	again
		supplied with
	by key		Faulty driving or triac
		voltage		Replace the complete main board
	pressure		circuit
	at	Faulty lid coil	Faulty winding of coil	Replace complete lid lock
	standstill	Lid is not	Lid bolt is jamming	Push lid into lock and press the key again
		correctly	Lid is deformed or	Readjust the lid centrically
		locked	disadjusted

Edition: 03	Trouble Shooting	Clinifuge
17.04.02 AH	Page: 2-3

Service

Trouble Shooting

	Error	Error Cause	Possible Error	Corrective Procedure
	Indication		Source
		Lid was	Forbidden
			intervention	Close lid immediately, turn power off/on, wait
		opened
			Emergency opening	for termination of br phase until end message
	“LId“	manually
			can only be used at	appears
		during run
	message		standstill
	appears in	Protection
	speed	circuit (15V)	Defective micro	Check leads and connectors to micro switch, in
	display	for lid control	switch or leads or
				case of a faulty micro switch, replace lid lock
		was	connectors to micro
				device completely
		interrupted	switch are interrupted
		during the run
	“OPEn“	15V supply	Defective micro
	message	circuit is	switch or leads or	Check leads and micro switch
	in speed	interrupted at	connectors to micro
	display	standstill	switch are interrupted
	“br “	Rotor comes
	message		Short interruption of	Wait for rotor standstill (appr. 75 seconds) and
		to standstill
	appears in
		without braking	mains supply	re-start
	speed	force
	display
	„E-“„ 2“	Maintenance	Rotor has reached	Replace rotor, NV-Ram and motor supports
	message
		counter
	appears in		10000 cycles	(Service Kit)
		expired
	speed field
	„E-“„ 3“	No brake
	message		Faulty main board	Remove main board completely and replace it
	appears in	current
	speed field
	„E-“„12“	Checksum	NV-RAM is not	Check NV-RAM and socket, insert the correct
		error of NV-
			initialized or false	NV-RAM
	message	RAM
	appears in	Disturbed data
	speed field	transfer from	Faulty main board	Remove main board completely and replace it
		NV-RAM
	All dots in	Maintenance	Rotor has reached	Replace rotor, NV-Ram and motor supports
	the display
		counter
	are		10000 cycles	(Service Kit)
		expired
	illuminated

Edition: 03	Trouble Shooting	Clinifuge
17.04.02 AH	Page: 2-4

Service

2.3 Test Points

	Test Points	Unit value	Conditions
	Mains terminal XA	120V AV	All given voltage and current values refer either to 120V (±10%)
	Lid micro switch	160V DC	Voltage drop by open lid at 120V units
	Plug XB
			Rotor #3760 not loaded, in each case measured after reaching the
		approx.	selected speed
	Terminal XC	58V AC	1600rpm
		105V AC	4000rpm
	Motor voltage
		120V AC	5300rpm
		80V AC	at the beginning of the braking phase
		75V AC	at the end of the braking phase
			Rotor #3760 not loaded, in each case measured after reaching the
			selected speed with a soft iron or digital effective measuring
		Approx.	instrument
	Motor current IM	1,2A	1600rpm
		1,2A	4000rpm
		0,8A	5300rpm
		3,3A	maximum during acceleration
		2,0A	maximum during braking phase
		14,6Ω	switch OFF unit, pull off motor plug
	Motor windings		mains winding (black – green)
	resistance 20°C	14,6Ω	auxiliary winding (black – yellow)
	-insulation value	> 10MΩ	resistance inter each phase and motor casing
	Lid solenoid		switch OFF unit,
	terminal XD	29Ω	resistance at 20°C (68°F)

Edition: 03	Test Points	Clinifuge
17.04.02 AH	Page: 2-5

Service

2.4Cleaning of Instrument Parts

ATTENTION - WARNING!

The electrical and electronic components must not be cleaned with moist detergents!

For Cleaning the centrifuge housing or its accessories see Operating Instructions section 1 (maintenance and care).

•Electronic components

Clean dusty components carefully with a dry and soft brush and remove loose dust with a vacuum cleaner

•Vent holes

Remove dirt from vent holes of front panel or bottom plate using a brush and vacuum cleaner

2.5Electrical Safety Check

ATTENTION!

A final electrical safety check must be performed after each maintenance and/or repair!

•Resistance check of protective conductor

The measuring value of the resistance between the mains plug's grounding pin and the grounding conductors of the motor, electronic chassis and the casing must not exceed 200 mΩ.

•Insulation resistance Check

Check also the insulation resistance between the poles of the mains plug and the grounding conductor; the resistance value must be more than 2 MΩ.

•Accessible current measured to EN 61 010

The accessible current must not exceed 3.5 mAmps in single fault condition (interrupted protection earth wire)! In accordance with the EN61010, IEC1010 and UL3101 such a fault condition can be reproduced by the following measuring circuit.

Steckergehäuse / plug-in casing

L (N) N (L) PE

10kΩ 0,22µF ±5%

±5%

0,022µF

±5%

500Ω ±1%

Körperstrom:

accessible current: I [mA] = U [mV] / 500: Umax = 1750mV ≡ Imax = 3,5mA

Spezifaktionen für Meßgerät

-TRMS, DC - 5kHz oder mehr

-Eingangswiderstand > 1MΩ

-Toleranz 5% oder besser

-Crest Faktor 5 oder besser

V

AC

Specifaction for the meter

-TRMS, DC - 5kHz or more

-Input resistance > 1MΩ

-Tolerance 5% or better

-Crest Factor 5 or better

Edition: 03	Cleaning, Electrical Safety Check	Clinifuge
17.04.02 AH	Page: 2-6

FUNCTIONAL DESCRIPTION

3 Functional Description

3.1Block Functions

The Clinifuge is a microprocessor controlled laboratory tabletop centrifuge with induction drive motor and integrated air cooling system.

The unit incorporates following boards and components (see block diagram 4-1):

Main board 14 or main board 178 with microprocessor part and power electronics

Key and indication board (programming: MEGACONTROL simple), part of the main board

1 phase induction motor with phase shift capacitor and integrated thermal over temperature switch (C. O. 125°C)

Double lid lock assembly with solenoid and integrated micro switch (mechanical bolt keeper, magnetically dislocking), attached in front on both sides of the vessel

3.2Main Board Functions

The main board 14 / 178 is mounted completely behind the front panel. The components on main board are arranged in following groups (see wiring diagram page 4-2).

Board fusing (2 x 6.25 Amps. slow blow feature)

Noise filter

Power pack for low voltage supply of microprocessor part and power electronics (potential separated by transformer)

Triac control circuit for lid solenoid ( DC supply via bridge rectifier)

Bridge rectifier for DC intermediate circuit supplying brake path and frequency converter

Microprocessor part with CPU

Exchangeable NV-RAM containing specific data of the unit

3.2.1Power Pack

The power pack (transformer, bridge rectifier and voltage regulator) generates:

U1 = 5V: supplies central processor, key and indication board reference potential: protective conductor (GND)

3.2.2Intermediate Circuit with Brake Path and Frequency Converter

The DC intermediate circuit serves as an energy store between the AC power input and the transmitted motor performance. The intermediate circuit consists of a bridge rectifier (4 diodes) and two serial connected reservoir capacitors. The intermediate circuit is over voltage protected.

Edition: 02	Block Functions, Main Board Functions	Clinifuge
17.01.02 AH	Page: 3-1

Main Board (Controller, Key and Indication Part)

NV-RAM

µC

Main Board (Power Electronics)

XA

XD

S1	Y1
S2	Y2
Lid Switch	Unlocking Solenoid

Edition: 02

23.01.02 AH

DIAGRAMMS

		lid
		quick
speed	time	run
set	set	start
		stop

TM

Clinifuge

XF

XF

F1

XA

F2

S0

XC

Mains

Mains Switch

C1

		120°C				Legend
Phase shift
		M1
capacitor						solder connection
		Motor
						plug connection
Block Diagram
4 - 1							Clinifuge

		DIAGRAMMS
		Transformer, Rectifiers and Regulators
	Main Board
				7805	5V (VCC)
				A1=GND
Mains Switch						5
S0	F1					1
XL			NTC
		Noise				2
XN	F2
		Filter
						3
			PTC
					DC intermediate circuit
XPE
Mains	F1, F2
	6,25 AT
						R4
						4
		XC/1	XC/2		XA/1	XA/2
			Y1		S1	S2
			Y2

PE	PE
Chassis	Motor	Lid solenoid	Lid Switch	Brake Resistor

Edition: 02			Schematic Diagram
23.01.02 AH		4 - 2		Clinifuge

DIAGRAMMS

H1 … H8	S1 … S7

				8
				A,B,C,D
				E,F,G,DP
Main Board Part 2
Y1/Y2		XG	XG	RESET
5					µP - Part
Current Control Res.
1
idyn	10	HGTPs			4
			14
				CPU	NV-RAM
2		idyn		idyn
3		“LId”...		"LId"
4					Key and indication part
XC/1	XC/2
		Physical Separation
	CL
	125°C
	CL = 12µF

		Motor and run capacitor
Edition: 02			Schematic Diagram
23.01.02 AH		4 - 3			Clinifuge