Elma Elmasonic S900 H

Questions and Answers

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Brooke WaltersAug 15, 2025
Why are my Elma Elmasonic S900 H results unsatisfactory?
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  Ms. Janet RussellAug 16, 2025
  Unsatisfactory cleaning results with your Elma Ultrasonic Jewelry Cleaner may occur if you are not using a suitable cleaning medium, or if you are not using any cleaning medium at all. In this case, use a suitable cleaning medium. Also, the cleaning temperature might not be sufficient, so heat up the cleaning liquid. Finally, the cleaning period may be too short, so repeat the cleaning interval.
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olozanoAug 18, 2025
What to do if the Elma Elmasonic S900 H Ultrasonic Jewelry Cleaner has no ultrasonic function and the LED is dark?
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  Meghan CarlsonAug 19, 2025
  If your Elma Ultrasonic Jewelry Cleaner has no ultrasonic function and the LED ultrasound is dark, first ensure that the turning knob for ultrasonic operation is not in the '0' position; if it is, switch it on. Check that the unit is switched on at the key on/off. Also, verify that the ultrasound key is pressed. If the issue persists, it may indicate a fault of electronics, in which case you should return the unit to the supplier or manufacturer.
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Leonard TorresAug 22, 2025
How to fix Elma Elmasonic S900 H Ultrasonic Jewelry Cleaner with no operating functions and all LEDs dark?
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  Pamela HoffmanAug 22, 2025
  If your Elma Ultrasonic Jewelry Cleaner has no operating functions and all LEDs are dark, first ensure that the mains cable is plugged in. If it is, check the socket and fuse to ensure they are functional. If the problem persists, the mains cable may be damaged or interrupted, requiring replacement. In the case of a fault of electronics, return the unit to the supplier or manufacturer.
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lwoodsAug 25, 2025
What to do if my Elma Elmasonic S900 H Ultrasonic Jewelry Cleaner unit does not heat up and the LED temperature is dark?
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  xcoleAug 26, 2025
  If your Elma Ultrasonic Jewelry Cleaner does not heat up and the LED temperature is dark, check that the turning knob temperature is not in the '0' position; if it is, switch it on. Also, verify that the unit is switched on with the key on/off. If the issue persists, it may indicate a fault of electronics, and you should return the unit to the supplier or manufacturer.
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Mary BeltranAug 27, 2025
What causes the set temperature to be exceeded in my Elma Elmasonic S900 H Ultrasonic Jewelry Cleaner?
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  christinarossAug 27, 2025
  The set temperature in your Elma Ultrasonic Jewelry Cleaner might be exceeded because the temperature sensor does not measure the average temperature due to lack of revolution, so mix the liquid manually or by means of ultrasound. Also, if the set temperature is too low, the ultrasonic energy heats up the liquid more than required, so for low set temperatures, do not switch on heating. Also, switch on ultrasound for short periods only.
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Scott CruzAug 30, 2025
Why is the heating-up period unsatisfactory for my Elma Ultrasonic Jewelry Cleaner?
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  Jessica JonesAug 31, 2025
  An unsatisfactory heating-up period in your Elma Ultrasonic Jewelry Cleaner could be due to loss of heating energy; use a cover (optional accessory equipment). It could also be caused by no mixing of cleaning liquid, so switch on ultrasound.
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james34Sep 2, 2025
Why does my Elma Elmasonic S900 H produce a boiling noise during heating-up?
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  Benjamin ObrienSep 3, 2025
  If your Elma Ultrasonic Jewelry Cleaner produces a boiling noise during heating-up, it may be due to no mixing of cleaning liquid, so switch on ultrasound.
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Robert HallSep 5, 2025
What to do if the casing of my Elma Elmasonic S900 H is damaged?
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  Michael DrakeSep 5, 2025
  If the casing of your Elma Ultrasonic Jewelry Cleaner is damaged due to damage by a third party or transport damage, return the unit to the supplier or manufacturer.
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Robert BaileySep 8, 2025
What does it mean if the LEDs of LED temperature blink alternately on my Elma Elmasonic S900 H Ultrasonic Jewelry Cleaner?
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  matthewbrownSep 8, 2025
  If the LEDs of LED temperature blink alternately on your Elma Ultrasonic Jewelry Cleaner, this indicates a heating fault. Turn the unit off and on. If the fault indication persists, return the unit to the supplier or manufacturer.
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Maurice FloresSep 12, 2025
What does it mean if the LEDs of LED ultrasound and LED temperature blink alternately on my Elma Elmasonic S900 H Ultrasonic Jewelry Cleaner?
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  bryantjohnSep 12, 2025
  If the LEDs of LED ultrasound and LED temperature blink alternately on your Elma Ultrasonic Jewelry Cleaner, this indicates a fault in the programme control. Turn the unit off and on. If the fault indication persists, return the unit to the supplier or manufacturer.

Summary

Important Safety Warnings

2.1 Instructions for the Use of the Present Manual

Read instructions before use. Do not use for other purposes. Understand warning symbols and signal words.

2.2 Instructions for the Use of the Unit

Intended for items and liquids only. No cleaning of living beings. Operation by authorized staff only. Ensure correct mains connection.

2.3 Intended Use as Medical Device

Ultrasonic pre-cleaning of surgical and medical instruments. Only reusable medical devices approved for ultrasonic cleaning are permitted.

2.4 Safety Instructions on the Machine

Observe operating instructions, warnings, and safety instructions. Beware of hot surfaces and liquids. Do not dispose with household waste.

Functioning

3.1 Ultrasonic Cleaning Factors

Product Description

4.8 Description of Operating Elements S 15 - S 900 H

4.9 Description of Operating Elements S 10; S 10 H

4.10 Operating and Display Functions

Describes actions like switching on/off, starting ultrasound, and displays for unit types S 10/S 10 H and S 15-900 H.

Initial Operation

5.2 Connecting the Unit to the Mains

Specifies required mains conditions (voltage, phases, earth) and how to connect the mains cable safely.

Putting Unit into Operation

6.1 Filling of the Unit

Shut drain, fill tank to approx. 2/3 with suitable cleaning liquid. Observe filling level and agent compatibility. Avoid flammable liquids.

6.2 Placement of Cleaning Items

6.3 Degassing of Liquid

Ultrasonic Cleaning Process

7.1 Heating up of the Cleaning Liquid (Units with Heating)

7.2 Temperature-Controlled Cleaning (Units with Heating)

7.4 Starting the Cleaning Process Manually

Set cleaning period using turning knob. Start operation with key. Automatic switch-off after 12h in permanent mode. Safety switch-off prevents unintended operation.

Cleaning Media

8.1 Limitations of Use of Cleaners Containing Solvents

Never use flammable liquids directly. Ultrasound increases vaporisation and fire risk. Follow EEC directives and safety warnings.

8.2 Limitations on Aqueous Cleaners

Do not use acid media (pH < 7) with fluoride, chloride, bromide ions. Avoid certain acids and alkaline solutions. Use acid-resistant tank if needed.

Maintenance

9.1 Maintenance; Care

9.3 Repair

Repair and maintenance works requiring opening must be done by authorised personnel only. Pull mains plug before opening. Contact manufacturer for break-downs.

Elma Elmasonic S900 H Specifications

General

Model	Elmasonic S900 H
Ultrasonic Frequency	37 kHz
Heater	Yes
Timer	1-30 minutes
Material Tank	Stainless steel
Temperature Range	30-80°C
Tank Volume	90 liters
Operating Mode	Continuous
Tank Capacity	90 liters