Katadyn Power Survivor 80E watermaker 12 Volts

Long Term Test (started March 2004)


  1. Comparison of the Katadyn equipments with the earlier PUR equipment

  2. Tests water quality

  3. positive / negative experiences up to

  4. "home made" malfunction while running the 80E


Comparison of the Katadyn equipments with the earlier PUR equipments

-

The 80E was completely water tight. Not the smallest drop of sea water did run out. That was different in former times with the PUR equipments. Those were often leaky even when brand new and had to be sealed by the customer himself.

-

It was noticeable that the 80E causes clearly fewer noise than earlier PUR 80 equipments. We inquired with the manufacturer Katadyn whether the engine or the drive was changed opposite PUR.

Katadyn:

"Regarding the engine I can tell to you that we did not change the engine. We have however made changes at the little things (like lubricant etc.).

The noise reduction can result from my point of view by the change in the manufacturing process. We manufacture in Switzerland after KAIZEN philosophy. Quality and control become thereby guaranteed in every individual manufacturing step. The washer under a not correctly tightened screw can cause vibrations and an additional noise level."

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Tests water quality

Test
Nr.

Date

hours
total

Water
Temp Cels

Litres
per hour

1

29.03.2004

1

25,8

12,0

21.04.2004

20

stored with biocide

2

08.03.2005

50

26,2

12,0

3

10.04.2005

84

29,4

14,8

22.04.2005

91

stored with biocide

Each value < 1000 ppm is drinking water quality.
Each value < 500 ppm is best drinking water.
ppm after minutes

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1713

1660

945

469

348

313

296

289

278

276

272

263

263

264

261

1904

1712

1222

847

517

469

423

387

372

359

348

347

348

339

351

1240

923

652

312

294

278

267

264

257

248

247

235

223

224

223

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positive / negative experiences up to

date

positive

negative

comment manufacturer

our comment

completely water tight

small noise

Engine seems to be not (sufficiently) radio-screened:

Clear disturbances with weak AM transmitters within the range 6,000 MHz to 18,000 MHz (80, 40, 30, 20, 17 meter band).

We stock test results of the manufacturer of the 12 V of engines, verifying that the 12-Volt engines are "conform to the EMC Directive", which means that the radiated emission of the engines lies underneath the demanded limits (specified in EN 50081-1 (1992))

Strong AM transmitters (BBC etc.) are not disturbed. The unit is switched off while SSB weather forecast.

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"home made" malfunction while running the 80E

Test 1 and 2 showed a smaller quantity of fresh water (12.0 litres/h) than indicated by the manufacturer (12.8 litres/h). At the same time according to data of the skipper the 12 volt engine consumed more energy than at the beginning, stresses the batteries and runs more slowly, except with external current supply via the marine engine generator. Our tests resulted in under 12 litres/h and increased current consumption. The water quality remained perfect.

We removal a battery from a battery bank and operated thereby the 80E directly. Immediately the drive rpm was clearly more highly, thereby also the output. The problem was obviously not at the equipment, but because of resistance in the wiring. We stopped this irregular test and controlled the wiring: Everywhere corrosion: All electrical cables were made of blank copper (European boat building standard), and also with high with high cross section were darkly discoloured to black even far under isolation. The terminals looked accordingly. The Skipper replaced the wiring with tinned cables (US American quality standard).

The wires led now fully flow the current practically without any electrical resistance. That affected (because of former corrosion in the line and high resistance and nothing now) less loaded construction units: The main switch for the 80E at the on-board instrument panel (not the On/Off switch at the 80E!) had corroded like the old wires. It became so hot that the isolation of the new wires to the equipment melted. Thus: Again new wires to the equipment, a new main switch inserted, ampere measured and again started the 80E. As expected the 80E ran now even without engine support completely error free. In order to see, what the 80E maximally will create, we sailed the ship into a bay with optimal conditions:

New wires, new main switch
water approximately 30 degrees Celsius
salt concentration not as highly as usual in Caribbean, but more fresh in consequence of fresh water supplies from ashore

The output was
with pure battery operation and with batteries half full: 12.9 litres/h,
with engine support and full batteries: 14.8 litres/h.

13 litres/h appear to us realistically in continuous operation. Maximally 14.8 litres/h are naturally no the default value, show however, how important good current supply is. If it is bad, one gets perhaps only 11 litres/h. Small output nearly always is because of insufficient current supply by resistance because of corrosion (only tinned cable is practically noncorrosive).

The current output in the Caribbean with its high salt concentration results in approximately 13 litres/h.
The 80E shows no corrosion at all and is completely dry. No one drop of water, no salt grain, nothing is to be seen. The PURE 80E from former never worked like that. Do not forget: Put some silicone grease on the piston rod.

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