Warranty
All Concrete Wolf’s machines are covered with a warranty of 1 year. In general, machines are reliable, and “real” warranty cases are rare compared to occasional damage during shipping, which is also not a problem with DHL’s insurance!
What to do in case of a malfunction or transport damage?
Please take high‑quality photos or make a video as shown in the examples below.
Our customer support will assist you. To save the customer’s time, we typically ship out the replacement machine immediately and ask the customer to return the old machine in the same box in which the replacement arrived.
Warranty Cases
Case No. 9
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Case No. 8. India
A minor issue with electric contacts.
14 August 2026
The laser receivers of one of the machines was not functioning properly. Even with a full‑strength signal from the laser emitter, the receptors failed to function adequately.
The issue was resolved by interchanging the laser receivers as guided by Concrete Wolf’s technical representative via video call.
Case No. 7. United Kingdom
Defect of servo motor. To avoid this, we started testing the servos under 300% load.
11 August 2026
The customer reported that while the machine still works well for leveling concrete, the right side of the machine started moving a bit differently, and the noise from it also became different. The verdict of our engineer was that one of the engines is broken and the machine will soon stop functioning properly.
Replacement was sent to the customer before the old machine finally stopped working.
Case No. 6. United Kingdom
Programming error. To avoid this issue in new units, we changed the programmer.
09 June 2026
The machine stopped working, and the customer sent a video about it.
The replacement was shipped out in a couple of days, after our engineer’s distant help didn’t work out.
Case No. 5. Belgium
Programming error. To avoid this issue in new units, we changed the programmer.
25 April 2026
Our customer reported that no‑vibration issues started to recur with the machine and provided a video.
The replacement machine was shipped to the customer.
Case No. 4. United Kingdom
Water got into the socket during washing. We improved the water resistance on the new units.
Case No. 3. Oman
Programming error. To avoid this issue in new units, we changed the programmer.
21 April 2026
Our customer reported a no‑vibration issue and provided two videos.
The replacement machine was shipped out within a couple of days.
Case No. 2. Sweden
First‑time occurrence of the issue: see next cases.
19 March 2026
After a few months, the machine began to stop vibrating — it worked for only about 10 minutes before the vibration stopped.
We shipped out a new and much improved model as a replacement.
Case No. 1. Australia
Laser Receivers were improved to avoid the issue.
12 February 2026
We received the following feedback from our customers:
„I have used the screed on several jobs now and have some questions. The screed work ok in the morning when we start but about an hour into using it the receiver lights flash red up and down at the same site on the receivers and it does not seem to level . I have a clear view of the laser we set it up in front of us and only work away from the laser.”
Our analysis demonstrated that this issue can occur only with very low and bright sunlight, and the right placement of rotary laser helps to avoid it. The issue is rare and can occur only with very low and bright sunlight.
We recommend the following: Do not place the laser in line with the sun — if the sun is shining from one side, just place the rotary laser on the opposite side, and provided the illustration below.
Shipping Damage Cases
Case No. 10.
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Case No. 8. Saudi Arabia
Case No. 3. Denmark
21 May 2026
The most extraordinary case: the shipment was declared “lost” by the courier, but in reality it was sent to the UK due to the courier’s mistake. The courier then repacked the shipment and finally forwarded it to the correct destination in Denmark. All of this took a few weeks, and the package arrived with extensive transport damage.
The replacement was shipped to the customer immediately.
