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How to Calibrate a Cooking Oil ATM, Change the Price and Make a Sale
- * = start a sale, cancel a wrong entry, or stop dispensing
- # = OK and settings
- Push button = start or pause dispensing
- Two passwords: daily (attendant and owner) and owner (settings only); request them from Herritech
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This guide covers H-TECH liquid dispensers with the keypad (PLC) controller, such as our cooking oil ATMs. The controller measures liquid digitally and dispenses the amount paid for. If your keypad looks different, contact us before changing any settings.
The two passwords
| Password | Who uses it | What it opens |
|---|---|---|
| Daily password (password 1) | Attendant and owner | Starts the machine for selling |
| Owner password (password 2) | Owner only | Settings: sales records, price per litre, calibration |
Keep the owner password private so only you can change prices and calibration.
Switching on and logging in
- Switch on with the on/off button.
- Key in the daily password.
Making a sale
Before the first sale of the day, make sure the pipe is full of oil: do a small sale (for example KSh 30) so the pump draws the oil up to the tip, and return that oil to the tank.
- Press *.
- Key in the amount of money the customer wants to spend.
- Press # (OK).
- Place the customer's container under the nozzle.
- Press the push button to dispense.
Viewing sales
- Switch the machine off, then on.
- Enter the daily password.
- Press #.
- Enter the owner password.
Changing the price per litre
- Switch off, then on.
- Enter the daily password.
- Press #.
- Enter the owner password.
- Press * to continue.
- When asked to modify the unit price, press # for yes.
- Key in the new price of 1 litre.
- Press * to exit, and * again to return to the start.
Calibrating the measure
Calibrate when the amount dispensed is not exact, for example when you sell half a litre and the jug shows more or less than half a litre. It may also be needed when you change to a liquid of a different thickness.
Before you start: make sure the pipe is full of oil (dispense about KSh 30 worth and return it), and have a measuring jug under the nozzle: the machine dispenses automatically during calibration.
- Switch off, then on.
- Enter the daily password.
- Press #.
- Enter the owner password.
- Press * to continue.
- Press * to skip changing the unit price.
- Press # to calibrate. The machine dispenses into the jug.
- Read the volume in the jug in millilitres (ml).
- Key in that volume in ml and press # (OK).
- Press * to exit to the start.
- Switch off, then on, to apply the change.
Test with a small sale into the measuring jug. If the measure is still wrong, repeat the calibration or call us.
What each button does
| Button | Functions |
|---|---|
| * (star) | Starts a sale; cancels a wrongly entered value; stops dispensing |
| # (hash) | OK; opens settings; memory reset (not recommended: call us first) |
| Push button | Starts dispensing; pauses dispensing |
Cleaning and care
- To clean the system, pump warm, clean water through it for 2 minutes to remove particles in the pipe.
- Do not use the keypad with wet hands.
- See the full cooking oil ATM cleaning and maintenance guide.
If something goes wrong
| Situation | What to do |
|---|---|
| Power cut | Switch the machine off for a while to protect the components |
| Burst or leaking pipe | Switch the machine off to avoid spillage, then call us |
| Machine not dispensing | Check that power reaches the pump and the controller; check the oil has not solidified in the pipe; check the pipes for leaks |
| Wrong measure | Calibrate (steps above) |
| Forgotten password | Contact us to get it or reset it |
With proper use, the controller lasts about 5 years.
Cooking oil ATMs
| Model | Size / capacity | Price |
|---|---|---|
| H-TECH 20 LITRES COOKING OIL VENDING MACHINE (MDF Concept) | 20 L | KSh 71,000 |
| 20 Liters cooking oil vending machine (Mild steel) | 20 L | KSh 74,000 |
| 20 Liters cooking oil vending machine (Stainless steel) | 20 L | KSh 81,000 |
| H-TECH 50 LITRES SALAD OIL ATM (MDF concept) | 50 L | KSh 80,000 |
| 50 Liters cooking oil vending machine (Mild steel) | 50 L | KSh 85,000 |
| 50 Liters cooking oil vending machine (Stainless steel) | 50 L | KSh 90,000 |
| 100 litres H-TECH salad oil vending machine (MDF Concept) | 100 L | KSh 92,000 |
| 100 Liters cooking oil vending machine (Mild steel) | 100 L | KSh 95,000 |
| 100 Liters cooking oil vending machine (Stainless steel) | 100 L | KSh 105,000 |
| H-TECH TABLE TOP COOKING OIL ATM (MDF concept) | – | KSh 35,000 |
| Table Top cooking oil vending machine (Mild steel) | – | KSh 38,000 |
| Table Top cooking oil vending machine (stainless steel) | – | KSh 40,000 |
Current listed prices incl. VAT (updated 30 September 2026). Full range: Cooking oil ATMs price list.
Watch: Cooking oil ATMs
Frequently asked questions
How do I calibrate a cooking oil ATM?
Log in with the daily and owner passwords, skip the price step, press # to calibrate, measure what the machine dispenses in a jug, key in the volume in ml, press #, exit and restart.
How do I change the price on a cooking oil ATM?
Switch off and on, enter the daily password, press #, enter the owner password, press *, press # to modify the unit price, key in the price of 1 litre, then press * twice.
How do I reset a cooking oil ATM?
Switch it off and on to refresh settings. A memory reset is not recommended; contact us first.
I forgot my cooking oil ATM password. What do I do?
Contact Herritech with your machine type and the name or phone number used when buying, and we will give or reset the password.
Why is my cooking oil ATM not dispensing?
Check power to the pump and controller, check the oil has not solidified in the pipe, and check for leaks.