Memmert IPP200 User manual

SERVICE MANUAL
IPP 200-500
Cooled incubator with Peltier technology
HPP 108
Constant Climate Chamber with humidification

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Service IPP 200-500/HPP 108 | 10/2008
Contents
1. About this guide 4
1.1 Purpose and target group 4
1.2 Related documents 4
1.3 Tools needed 4
1.4 Manufacturer address and
customer service 4
2. Safety regulations 5
3. Finding Errors and
Error Messages 6
4. Overview 8
4.1 Construction 8
4.2 Control unit 10
5. Removing covers 11
5.1 Removing top panel 11
5.2 R emoving the rear panel 12
6. Mainboard 13
6.1 Check switching function of
mainboard 13
6.2 Replace fuses 14
6.3 Replace mainboard 14
7. Replacing the switched mode
power supply 15
8. R eplace main switch module with
the push/turn control 16
9. Replace controller 17
10. Replace Pt100 temperature
sensor 18
11. Replacing the chamber fan 19
12. Removing the fan from the
rear panel 21
13. Replacing a Peltier
cooling/heating module 23
14. Adjusting and removing
inner door 25
14.1 Adjusting inner door 25
14.2 Removing the inner door 25
15. Installing, removing and
adjusting door 26
15.1 Removing the door 26
15.2 Installing the door 26
15.3 Adjusting the door 27
15.4 Removing and installing
the door lock 28
16. Replacing seals 30
16.1 Replacing door seal 30
16.2 Replacing the chamber
seal and the cage seal 30
17. Replacing the interface module 32
18. H umidification and/or
dehumidification does
not work properly 33
18.1 H umidification is not
working properly 33
18.1.1 Replac steam generator 35
18.1.2 Replacing the pump 36
18.2 Dehumidification is not
working properly 36
18.2.1 Replace fan and dehumidi-
fication Peltier module 37
18.2.2 Replace the dehumidi-
fication power supply unit 38
18.3 R eplace control module 39
18.4 Replacing the humidity sensor 40
19. C ircuit diagrams 42
19.1 Legend 42
19.2 IPP 200/300/400 43
19.3 IPP 500 44
19.4 HPP 108 45

4Service IPP 200-500/HPP 108 | 10/2008
About this guide1.
Purpose and target group1.1
This guide describes the service and repair work available for
cooling incubators of types IPP 200–500 and constant climate
chambers of type HPP 108. It is intended exclusively for use by
electrical technicians who are familiar with safety regulations for
electrical engineering.
Related documents1.2
Apart from this service guide, the information and regulations in
the user manual for the respective appliance must also be ob-
served for all service and repair work.
Please refer to the circuit diagrams at the end of this guide for all
work on the electrical system.
Tools needed1.3
The following tools and equipment are required to perform the
work described in this guide:
Torx screwdriver sizes 8 and 10 ►
Phillips screwdriver size 1 ►
Wire-cutting pliers ►
Flat pliers to remove the connection cable ►
Allen key 2 mm for door hinge, ►
1.5 mm for humidity sensor (for HPP 108)
Multimeter with voltage and resistance measuring range ►
Cable ties ►
Adhesive tape to label cables and components ►
Manufacturer address and customer service 1.4
MEMMERT GmbH + Co. KG
Postfach 17 20
91107 Schwabach, Germany
Äußere Rittersbacherstr. 38
91126 Schwabach
Germany
Phone: [phone] / 925-0
Fax: [phone] / 14585
E-mail: [email protected]
Internet: www.memmert.com
Customer Service:
Phone: [phone]
and: [phone]/925-126
E-mail: [email protected]
For service enquiries, please always specify the appliance number
on the nameplate.
© 2008 Memmert GmbH + Co. KG
Date 10/2008
We reserve the right to make changes

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Service IPP 200-500/HPP 108 | 10/2008
Safety regulations2.
Danger!
After removing covers, voltage-carrying parts
may be exposed if the mains plug has not
been disconnected. Any work that involves
opening the appliance may only be performed
by trained electricians who are familiar with
the safety regulations for electrical engineer-
ing.
Caution!
When dismantling the appliance you could be
injured on sharp (unprocessed) metal edges.
You should wear gloves.
Please also observe the safety regulations in
the operating instructions for the respective
appliance.
After all maintenance or repair work, the appliance must be sub-
ject to a function test. The appliance must not be left unattended
until it has reached the steady state.
If the fault or malfunction cannot be rectified by the repair work:
Contact the manufacturer.

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Finding Errors and Error Messages3.
Error description Cause of error Rectifying errors Page
General faults
Controller display does
not light up
Fuse 100 mA
(200 mA/115 V) faulty
Check fuse, replace if
necessary
14
Appliance fuse 15 A faulty Check fuse, replace if
necessary
14
Mainboard faulty Replace mainboard 13
Temperature cannot be
adjusted and
appliance can in general
not be operated with the
push/turn control
Appliance "locked" by UserID card Undo lock with UserID card
Push/turn control faulty Replace main switch module
with push/turn control
16
Cooling fan on rear wall
does not turn
- cooling fan faulty
- switched mode power supply faulty
- replace cooling fan
- replace switched mode
power supply
21
15
Cooling fan in interior
does not turn
- cooling fan faulty
- switched mode power supply faulty
- replace cooling fan
- replace switched mode
power supply
19
15
Malfunctions in the heating and cooling function
Red LED on the
mainboard does not light
up
- switched mode power supply faulty
- contact element MOSFET faulty
replace switched mode
power supply
15
When changing from
heating to cooling,
the red LED on the
mainboard does not go
out
- switched mode power supply faulty
- contact element MOSFET faulty
replace switched mode
power supply
15
When switching from
heating to cooling, the
relay does not switch over
Relay faulty Replace mainboard 13
Green LED on the
mainboard does not light
up
- switched mode power supply faulty
- contact element MOSFET faulty
replace switched mode
power supply
15
Error messages in monitoring display
Caution – icon
is flashing
Monitoring controller has switched
off heater, since temperature
difference between operating and
monitoring controller is too small
Increase temperature
difference between
monitoring temperature and
working temperature.
Replace Pt100 temperature
sensor of monitoring
controller if necessary
18

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Service IPP 200-500/HPP 108 | 10/2008
Error description Cause of error Rectifying errors Page
Error message "E-3"
alternates with display of
temperature
Pt100 temperature sensor of
monitoring controller faulty.
Monitoring controller is working
in emergency mode with the
temperature value of the Pt100
temperature sensor from the
operating controller
Replace Pt100 temperature
sensor of the monitoring
controller on plug J3
18
Error messages in timer display
Error message "E-0" Serious configuration error
(e.g. incorrect cabinet type or wrong
temperature range)
Replace controller 17
Error message "CONF" (is
displayed for only 10 sec.
after switching on)
Checksum error (error when saving
set values, e.g. air turbine speed)
The error can be rectified
by the controller after a set
value parameter has been
saved again. If the error
should continue occurring,
or cannot be rectified,
replace the controller 17
Error message "E-L1" in
the timer display
Communication with the mainboard
interrupted
Check connection cable,
replace mainboard if
necessary
13
Error messages in temperature display
Error message "E-3"
alternates with display of
monitor
Pt100 temperature sensor of
operating controller faulty. Operating
controller is working in emergency
mode with the temperature value of
the Pt100 temperature sensor from
the monitoring controller
Replace Pt100 temperature
sensor of the operating
controller on plug J4
18
Error message "E-1" Mainboard actuator Triac faulty Replace mainboard 13
Error message "E-2" Mainboard faulty Replace mainboard 13
Malfunctions of the humidifier and/or dehumidifier (only for the constant climate chambers HPP 108)
Neither humidification nor dehumidification are working properly 33
Dehumidification works, humidification doesn't work 33
Humidification works, dehumidification doesn't work 36

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O4. verview
Construction4.1
12
3
4
5
6
7
8
9
10
11
Construction (shown in figure: Maximum fittings for HPP 108; the actual fittings may vary, depending Fig. 1:
on the appliance type)

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Service IPP 200-500/HPP 108 | 10/2008
Item Designation see also page
1 Top panel 11
2 Rear panel 12
3 Right-side panel 11
4 Door 26
5 Inner glass door 25
6 Fan cover, right119
7 Fan cover, left119
8 Left-side panel 11
9 Cover of left Peltier heating/cooling module121
10 Cover of dehumidification Peltier module237
11 Cover of right-hand Peltier heating/cooling module121
1 only for types IPP 500 and HPP 108; types IPP 200 -400 have just one interior fan and one Peltier heating/
cooling module on the rear side
2 only for constant climate chambers HPP 108

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4.2 Control unit
(see also circuit diagrams from page 42).
The control unit can be reached after the top panel has been removed (see page 11).
1234567
Control unit IPP 200/300/400Fig. 2:
2345789710
Control unit IPP 500/HPP 108Fig. 3:
Main connection terminal1
Mainboard (see page 13)2
Controller (see page 17)3
Chipcard reader4
Main switch (see page 16)5
Feed-through for temperature sensor Pt100 (see page 18)6
Switched mode power supply(ies) (see page 15)7
Only for HPP 108:
Pump for humidification (see page 36)8
Control module for humidification (page 39)9
Power supply unit for humidification (page 38) 10