Sanyo MCO-18AIC User manual

Service Manual CO2Incubator
MCO-18AIC
FILE No.
SM9910023

Contents
Page
Features................................................................................................................................1
Structural specification..........................................................................................................2
Performance specification.....................................................................................................3
Control specification..............................................................................................................4
Dimensions........................................................................................................................ 5∼6
Electrical parts....................................................................................................................... 7
Temperature calibration ........................................................................................................ 8
CO
2
calibration ...................................................................................................................... 9
Control specification ...................................................................................................... 10∼19
Wiring diagram .................................................................................................................... 20
Circuit diagram .................................................................................................................... 21
Components on PCB........................................................................................................... 22
Connection on PCB............................................................................................................. 23
CO
2
gas circuit....................................................................................................................24
Prevention of contamination................................................................................................ 25
Auto zero adjustment .................................................................................................... 26∼27
Specifications of sensor ...................................................................................................... 28
Parts layout ................................................................................................................... 29∼31
MCO-18UVS installation procedure..............................................................................32∼35
Mounting procedure of MCO-21GC .............................................................................. 36∼39
How to replace water level sensor ...................................................................................... 40
MCO-18PS installation procedure.................................................................................41∼42
MCO-18SB Setting procedure............................................................................................. 43
MCO-21SB Setting procedure............................................................................................. 44
Instruction manual ............................................................................................................... 45

Effective models
This service manual is effective following models.
Model name Model code Voltage and Frequency
MCO-18AIC 823 279 51 115V 60Hz
823 279 52 220V 50Hz
823 279 53 220V 60Hz
823 279 54 230V 50Hz
823 279 56 230V 50Hz

1
Features
1. PID control with micro-computer.
This unit has PID control (Proportional Integrate Differential) accurate controls internal
temperature, as well as air sensor system monitoring internal temperature.
2. Infrared CO2sensor installed.
Infrared CO2sensor is not affected by humidity.
3. UV sterilization system (Option)
Water and the circulating chamber air in the humidifying pan are sterilized by UV lamp.
Optional setting of light mode is available.
4. Rounded Ball corners.
Inside chamber wall made by stainless steel and its corner made rounded type.
This made cleaning easier and de-contamination.
5. Reduce contamination.
Inside chamber material is made by anti-bacteria SUS.
Appearance and durability are almost same with ordinary SUS.
Anti-bacteria SUS has effect same as copper alloyed. (except for humidity pan)
6. Expandability (Module concept)
The control circuit is adopted commonly withMCO-20AIC.
7. Options
(1) Castor with adjustor (roller base: MCO-18RB)
(2)CO2gas tank switcher (assembled in unit: MCO-21GC)
(3) Extra stainless steel shelves (1 shelf + 1 shelf support basis :MCO-46ST)
(4) Stacking plate for double-piled (MCO-18PS)
(5) UV sterilization system (MCO-18UVS)
Note ; Model name
MCO– 18 A I C
C: Copper alloy anti-bacteria stainless steel
I: InfraredCO
2sensor
A:Airjacket
18: Chambercapacity(170L)
CO: CO
2Incubator
M: Medical equipment

3
Performance specification
Model MCO-18AIC
Ambient temperature and
humidity range
Temperature: 5°C∼35°C
Humidity: Less than 80%RH
(In ambient temperature is lower than 15°C, original
performance cannot be always obtained)
Temperature control range in
the unit
Ambient temperature+5°C∼+50°C
(Settable range:0°C∼50°C)
Temperature distribution in
the unit ±0.25°CÚ
Temperature variation in the
unit ±0.1°CÚ
Temperature recovery period
25 minutes or less
(until the internal temperature is recovered to 36.5°C after
door opened for 30 seconds)
CO
2
level range 0∼20%
CO
2
level distribution range ±0.15%
CO
2
level recovery period
10 minutes or less
(until the CO
2
level is recovered to 4.5% after door opened
for 30 seconds.)
Internal humidity 95±5%RH
Internal humidity recovery
period
30 minutes or less
(until the internal humidity is recovered to 90%RH after door
opened for 30 seconds.)
Supplied CO
2
gas pressure 0.03MpaG (0.3kg/cm
2
G) when the gas supplied
Power supply Single phase, local voltage
Total power consumption 310W
Total current 110-120VAC: Maximum 2.8A
220-240VAC: Maximum 1.4A
Quantity of radiation Maximum 1120kJ/h
Test condition:
Set point: 37°C
CO
2
set point: 5.0%
No load
Ambient temperature: 20°C
Ambient humidity: Approx.45%
ÚBased on the measuring method on validation service manual.

4
Control specification
Model MCO-18AIC
Heating method Direct Heat + Air jacket (DHA)
Temperature control
system
Microprocessor PID
Sensor: temperature sensor (103AT-1)
Detect and control the inside temperature directly.
Temperature indication Digital display (resolution: 0.1°C)
CO
2
measuring system Infrared CO
2
sensor, PID control
CO
2
level indication Digital display (resolution: 0.1%)
Humidifying system Natural vaporization by water in humidify pan.
Humidify pan: W293 x D407 x H41mm
Inside air circulation Breeze circulation
Alarm system
High/low temperature alarm, high/low CO
2
level alarm
Both display for temperature and CO
2
are flashing, and buzzer sounds
intermittently after 15 min.
Independent alarm for overheat
Door lamp
Door switch
When outer door is opened:
Inside fan OFF, CO
2
valve OFF, (UV lamp * OFF) and heater OFF
(only when door is kept opening for 1 min. or more)
Remote alarm
When an alarm is triggered:
Remote alarm ON (Alarm and buzzer are interlocked.)
Contact output: rating of contact 30VDC, 2A
Self diagnosis function Error code and internal temperature are displayed alternately.
Buzzer and remote alarm contact ON
UV lamp control *
Automatic ON-OFF control (changeable with Function mode)
1. Interlocked with the door:
UV lamp ON for 5 min. after every door closed.
2. OFF mode (UV lamp does not turn on)
* UV lamp is optionally provided.

5
Dimensions

6