Nahita 2640 Series, Руководство пользователя

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Page 20 Instruction manual 5264xxxx Version 1 June-2011
8. ANALYSIS OF COMMON FAULTS AND ELIMINATION THEREOF.
Fault symptom Cause analysis Elimination
methods
Remarks
No display or
disorderly display
Blown out fuse (5A)
of primary circuit
Change for a fuse of
same size
Dropout of wire con-
nected to display board
Open the cabinet
and re-weld the loose
wire.Open the cabinet
and re-weld the loose
wire.
Misoperation of chip
computer and disor-
derly operating proce-
dure
Turn off power
switch of the host
machine and start it
several minutes later
Operate according to
normal operating pro-
cedure
Unstable rotating
speed
Control circuit or
brushless controller
has fault
Contact Nahita
Technical Service
Big noise Damaged drive
motor
Test tubes are placed
umbalancedly
Place test tubes
symmetrically
Loosened nut on the
rotor
Tighten the nut on
the rotor
Display present,
but centrifugation
cannot be carried
out
Door cover is not clo-
sed well
Close door cover
again
Speed fails to rise
due to insufficient
power supply voltage
Contact Nahita
Technical Service
Failed to open the
door and change the
sample after last time
centrifugation finishes
Open the door, then
close it securely
Pushbutton switch
fails due to poor con-
tact
Contact Nahita
Technical Service
No display after
operation, but the
set peed value is dis-
played after a period
of time
The program stops
the machine for protec-
tion after failure to read
the speed signal.
Contact Nahita
Technical Service
Version 1 June-2011 Instruction manual 5264xxxx Page 13
ATTENTION!! IF EQUIPMENTS ARE NOT PROPERLY CLEAN AND
DISINFECTED THEY WOULD NOT BE ALLOWED TO REPAIR BY OUR
TECHNICAL SERVICE.
INDEX OF LANGUAGES
Spanish
English
French
2-11
12-21
22-31
F
OREWORD
I
MPORTANT HINT
S
AFETY PRECAUTIONS
P
RECAUTIONS FOR OPERATION
P
RECAUTIONS FOR SERVICE ENVIRONMENT
T
RANSPORT AND STORAGE CONDITIONS
M
AIN TECHNICAL PARAMETERS AND PERFORMANCE INDEXES
M
AIN TECHNICAL PARAMETERS
P
ERFORMANCE INDEXES
O
PERATING PRINCIPLE
S
TRUCTURAL DIAGRAM AND SYSTEM BLOCK DIAGRAM OF CENTRIFUGE
U
SE AND OPERATION
P
REPARATION AND CHECKS PRIOR TO USE
D
ESCRIPTION OF OPERATION OF THE APPARATUS CONTROL SYSTEM
A
NALYSIS OF COMMON FAULTS AND ELIMINATION THEREOF
M
AINTENANCE AND SERVICE
14
14
14
15
15
15
16
16
17
18
19
20
21
INDEX OF CONTAINS
ENGLISH ENGLISH