Cryostat Forums

10 Replies

Hi all,

It seems the control board is defective, as it is not switching the compressor correctly. All other functions appear to be working normally.

I am looking for a replacement board, as well as wiring diagrams if available.

For troubleshooting, I connected the compressor directly to power and it runs properly, which suggests the compressor itself is OK and the fault is likely on the board or in the control circuit.

Any help would be appreciated.

RE: Thermo Fisher Scientific - NX50 Cryostat
4 Replies

Is there is a way to lift the cryostart when servicing it in the field instead of crawling on the floor and working on my knees is there is a jig or two so someone of you is using for that or do I have to stick with the knee pads

RE: Leica Biosystems - CM1860
Updated  Dec 10 2025
2 Replies

I need a refrigeration compressor for the Leica CM1800. Is there an aftermarket one that I can use in this unit?

Thank You

Equipment: LEICA CM1800

RE: Leica Biosystems - CM1800
Updated  Dec 10 2025
8 Replies

I need a compressor for the Leica CM1800. Is there an aftermarket for this compressor, or a compatible one I can use?

RE: Leica Biosystems - CM1800
8 Replies

Hi,

We have recently noticed ice building up on the knife holder and carrier to the point that sometimes you cannot adjust the angle of the carrier or the forward and lateral movement.  We have also seen frozen ice droplets in the chamber.  We defrosted the cryostat but the problem persists.  We then watched the defrost cycle and noticed that the chamber gets very warm and a lot of condensation occurs on the window and inside the chamber.  The display shows H - 42, which I believe indicates the temperature of the evaporator. Once the defrost cycle ends there is still a lot of condensation in the chamber and this appears to be reason we see freezing once the cryostat cools down.  Any ideas on why this happens and how to fix it are appreciated.  This started about a month ago and has never happened during the past 12 years that we have used the cryostat.  Thanks..

Equipment: Microm HM-525m Cryostat

RE: Microm - HM520/HM525
Added  Aug 4 2025
0 Replies

Does anyone know how to rebalance the hand wheel on the Leica CM1850 cryostat? There doesn’t seem to be anything to adjust on the hand wheel. 

Equipment: Leica CM1850 cryostat

RE: Leica Biosystems - CM1850
Added  Aug 1 2025
0 Replies

What size breaker would I use at main power box?

Equipment: Leica 1850 cryostat

RE: Leica Biosystems - CM1850
Updated  Aug 1 2025
2 Replies

What size breaker do I need to install at main power?

Equipment: Leica 1850 cryostat

RE: Leica Biosystems - CM1850
Updated  Jul 20 2025
1 Reply

I'm getting E023 on a used Leica cm1850 i just purchased from an auction. The Temperature is not cooling below ambient temp. What is the cause and how do I resolve this.

Equipment: Leica CM1850

RE: Leica Biosystems - CM1850
Updated  Jun 19 2025
2 Replies

When was the oldest Sakura cryostat released

Equipment: Sakura cryostat

RE: Sakura - Cryo 2000

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