Fridge

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   Hi, we have what I believe is the original refrigeration equipment installed in our 350, an Isotherm BD35F compressor with a flat 250mm x 350mm evaporator plate mounted with the longer side vertically. We have recently been told that this evaporator plate is designed be mounted horizontally with the inlet and outlet at the top. This sounds like it could be true as the top half of our evaporator plate never gets really cold. So I have two a few questions please:Is this the standard set up on the 350 as built by Hanse? If not what is?
Has anybody tried fitting the 250 x 350 x110 L shaped evaporator plate?
Are there any other configurations that people have found to work?
Although our fridge works it really struggles when the air temperature gets above 30°C and the plate ices up really quickly.

Many thanks

Bob

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350Bob Members Profile Send Private Message Find Members Posts Add to Buddy List Captain Joined: 24 August 2015 Location: Greece Status: Offline Points: 179	Post Options Post Reply Quote 350Bob Report Post Thanks(0) Quote Reply Topic: Fridge Posted: 05 June 2022 at 12:44
	Hi, we have what I believe is the original refrigeration equipment installed in our 350, an Isotherm BD35F compressor with a flat 250mm x 350mm evaporator plate mounted with the longer side vertically. We have recently been told that this evaporator plate is designed be mounted horizontally with the inlet and outlet at the top. This sounds like it could be true as the top half of our evaporator plate never gets really cold. So I have two a few questions please: Is this the standard set up on the 350 as built by Hanse? If not what is? Has anybody tried fitting the 250 x 350 x110 L shaped evaporator plate? Are there any other configurations that people have found to work? Although our fridge works it really struggles when the air temperature gets above 30°C and the plate ices up really quickly. Many thanks Bob
	H350 #205

JUTTER Members Profile Send Private Message Find Members Posts Add to Buddy List Commander Joined: 05 November 2015 Location: Belgium Status: Offline Points: 84	Post Options Post Reply Quote JUTTER Report Post Thanks(1) Quote Reply Posted: 06 June 2022 at 19:09
	Hi Bob, I join a picture of the Isotherm label on my H350 (2010). Not sure it is exactly the same model of compressor you mentioned. The evaporator plate (250x350) is mounted the same way as yours: the longer side set vertically. And it does get really cold at the top. Claude
	JUTTER, Hanse 350#0256, 2010, deep keel, Zeeland

350Bob Members Profile Send Private Message Find Members Posts Add to Buddy List Captain Joined: 24 August 2015 Location: Greece Status: Offline Points: 179	Post Options Post Reply Quote 350Bob Report Post Thanks(0) Quote Reply Posted: 08 June 2022 at 19:05
	Hi Claude, Thanks for that information, it looks my installation is original so I maybe have something else wrong with it. Best wishes Bob
	H350 #205

coriolis2 Members Profile Send Private Message Find Members Posts Add to Buddy List Captain Joined: 06 January 2008 Location: Delfzijl Status: Offline Points: 264	Post Options Post Reply Quote coriolis2 Report Post Thanks(0) Quote Reply Posted: 21 March 2023 at 07:54
	The fridge struggles because there is NO insulation around the fridge. I installed 2 sheets of Rockwool and spent 2 cans of PUR. makes a real difference in power usage over the day.
	"Coriolis" H350 #045 (ex Waarschip 570 #? 1987/1992, ex Waarschip 28LD #7 1994/2007)

350Bob Members Profile Send Private Message Find Members Posts Add to Buddy List Captain Joined: 24 August 2015 Location: Greece Status: Offline Points: 179	Post Options Post Reply Quote 350Bob Report Post Thanks(0) Quote Reply Posted: 21 March 2023 at 09:42
	Thanks for your reply, can I ask where you used the insulation sheet and where you injected the polyurethane foam please? I am cautious about using the expanding foam as I have used too much on other projects and forced things apart. Bob
	H350 #205

martijnvdh Members Profile Send Private Message Find Members Posts Add to Buddy List Lieutenant Joined: 25 August 2021 Location: Belgium Status: Offline Points: 37	Post Options Post Reply Quote martijnvdh Report Post Thanks(0) Quote Reply Posted: 21 March 2023 at 12:14
	I will be doing a test soon with Instapak "sealed air" packaging bags for insulation of the fridge on our 371. I tried with self-adhesive 19mm armaflex sheets, but even after cutting an access hole in the backrest of the couch, I can't get enough access behind the fridge to get it glued in. Instapak Quick RT Expanding Foam Packaging - YouTube Normal PU foam absorbs water over time unless sealed in some way. The test I intend to do is to join two sheets of 18mm multiplex together with a 5cm gap in between and see what happens with one of these instapak bags in between. Will share some info and pictures.

Ian Coverdale Members Profile Send Private Message Find Members Posts Add to Buddy List Captain Joined: 19 June 2019 Location: Northen Ireland Status: Offline Points: 161	Post Options Post Reply Quote Ian Coverdale Report Post Thanks(0) Quote Reply Posted: 21 March 2023 at 15:15
	... also check there is good ventilation around the compressor unit. Hanse mounted ours in poorly ventilated box. They also installed a length of flexible hose but did not connect it. Compressor is a heat pump; extracts heat from the coolbox but must then be able to dump that heat somewhere. Edited by Ian Coverdale - 21 March 2023 at 15:16
	Ian & Andrea SV Gabrielle (H445)

Ian Coverdale Members Profile Send Private Message Find Members Posts Add to Buddy List Captain Joined: 19 June 2019 Location: Northen Ireland Status: Offline Points: 161	Post Options Post Reply Quote Ian Coverdale Report Post Thanks(0) Quote Reply Posted: 21 March 2023 at 15:31
	System is an Isotherm Compact Classic. Only reference in installation manual referring to orientation is below. Cannot see anything to say pipe must be at top or bottom 2.11 Locating and Installing the Evaporator The evaporator can be mounted horizontally or ver- tically on a sidewall near the top of the box, acces- sible from the box opening. In positioning the evaporator consider the routing of the refrigerant lines out of the box. Mark the location of the mounting holes, drill and attach the evaporator with the screws and the plas- tic standoff spacers provided. Do not use screws longer than those provided, as they will penetrate the insulation (fig. 6).
	Ian & Andrea SV Gabrielle (H445)

perry Members Profile Send Private Message Find Members Posts Add to Buddy List Captain Joined: 13 October 2015 Location: IOW Status: Offline Points: 210	Post Options Post Reply Quote perry Report Post Thanks(1) Quote Reply Posted: 22 March 2023 at 08:38
	Anyone interested in improving fridge operation; Last year I fitted a cheap electronic thermostat and internal small fan to circulate air over the evaporator plate. The improvement in efficiecy are remarkable, reduced battery drain and accurate temperature, and fast pull down to temp. The original mecanical thermostats really dont work well, the electronic unit is programmable so you can ease the load on compressor startup. And coupled with the simple cheap 12v fan from PC. Easy mod and well worth the effort. You find my posts and picutures at the end of this "Fridge running strangely" thread. Perry https://www.myhanse.com/fridge-running-strangely_topic13565_page1.html?KW=fridge Edited by perry - 23 March 2023 at 20:30
	Current Yacht Hanse 315 2007 Last Yacht Hanse 301 Round GB in 2017

Martin&Rene Members Profile Send Private Message Find Members Posts Add to Buddy List Vice Admiral Joined: 06 December 2009 Location: United Kingdom Status: Offline Points: 779	Post Options Post Reply Quote Martin&Rene Report Post Thanks(0) Quote Reply Posted: 23 March 2023 at 15:52
	Judging from some of the other positive comments whilst the fact is that not all the evaporator plate on you yacht is is cools. it is a possibility that the system needs re-gassing. Looking at the broader picture of how to improve the performance of the fridge, there have been a number of articles on insulating fridges, so here are some links. This one describes the top-level job using expanding foam and has some other useful comments. https://www.myhanse.com/reduce-compressor-running-time-with-up-to-50_topic5008_page4.html?KW=fridge This one uses sleeping mat polystyrene foam https://www.myhanse.com/topic12058_post99004.html#99004 I just glued in pieces of 25mm closed cell foam that the building trade used. Also remember to put pipe insulating on the pipe from the compressor to the fridge. I also used the same PIR foam underneath the bed bases, as seen in an article I wrote. https://www.myhanse.com/minimising-condensation_topic12658_post104059.html?KW=insulation#104059 This link shows how I improved the air flow over the compressor cooling coils with a PC fan https://www.myhanse.com/fridge-comprressor-cooling&KW=isotherm_topic7850_post61459.html#61459
	Martin&Rene Hanse 341 Dipper Wheel steering, 3 cabin layout, normally based in Scotland



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