Start with the layout, not just the area
Continuous panel rows
Compare a tracked robot when the panel surface and row layout are compatible. Ask how the machine will be placed on the array, controlled during work and moved to the next row. Confirm slope, gaps, edges, obstacles and handling requirements with the factory.
Separated panels, edges and varied jobs
Compare a pole-operated brush where an operator can work from a suitable position and reach the required area. Specify the necessary pole reach and brush format. A longer pole is not automatically easier to handle; assess the real working position and water route.
A mixture of both
A team serving several sites may need different tools for different tasks. Compare each site before deciding whether one model covers the work or whether a robot and brush should be used for separate tasks. Do not buy a second machine without a defined need.
What changes when you choose a robot or brush?
| Decision | Tracked cleaning robot | Pole-operated electric brush |
|---|---|---|
| Models | CM-105S single roller; CM-106S dual roller | CM-101S single disc; CM-102S dual disc; CM-103S roller |
| How it is operated | Handheld remote control; an operator is required | The operator guides the cleaning head with a telescopic pole |
| Layout to review | Panel dimensions, continuous rows, gaps, slope, edges and transfers | Reach, operator position, separated areas, edges and obstacles |
| Configuration to confirm | Robot model, battery version, charger, water hose and supply list | Brush head, pole length, brushed or brushless motor, power supply and supply list |
| What to time in a demonstration | Setup, a representative cleaning pass and transfers between rows | Setup, operator handling, a representative cleaning pass and repositioning |
| What the specification does not establish | Runtime is not a measured cleaning-area rate or proof of site suitability | Pole length is not a measured cleaning-area rate or a guarantee of reach at every site |
CM-105S vs CM-106S: compare the stated configurations
The product sheets identify the following roller formats and runtime versions. Runtime describes a battery configuration, not cleaning productivity. Ask the factory to confirm the dimensions, weight and working limits for the exact equipment offered.
| Configuration | CM-105S | CM-106S |
|---|---|---|
| Cleaning head | One roller | Two rollers |
| Standard-version runtime | 4–5 hours | 3–4 hours |
| Extended-version runtime | 8–10 hours | 6–7 hours |
| Control and drive | Handheld remote control; tracked platform | Handheld remote control; tracked platform |
Runtime figures are stated in the current product sheets. Actual runtime depends on the chosen battery and operating conditions. Two rollers alone do not prove a faster cleaning rate or a shorter payback period.
Choose the brush head and pole configuration
CM-101S uses one disc, CM-102S uses two discs and CM-103S uses a horizontal roller. Pole length can be customized, and brushed or brushless motor options are available. The linked product sheets show brushless versions; confirm the motor, pole, power supply and accessories in the quotation. Compare how each head handles your real panel layout rather than assuming that a larger head always finishes the job sooner.
Compare the cost of a complete cleaning visit
A purchase price is only one part of the decision. Use the same site and cleaning scope when comparing equipment. Record setup, cleaning, transfers, pack-up, transport and maintenance time, as well as the number of operators. Include water, power, replacement brushes and other consumables. Ask for a representative demonstration if the difference will determine the purchase.
Estimated cost per visit = (annual equipment allocation + annual labor, transport, water, power, consumables and maintenance costs) ÷ annual cleaning visits.
Choose a realistic service life and workload for your business. If a supplier has not confirmed weight, brush width, slope limits or a measured cleaning rate, request that information rather than filling the gap with assumptions. There is no universal area threshold or guaranteed payback period.
Send the information needed for a useful recommendation
- Site photographs showing complete rows, edges, gaps and access routes.
- Panel dimensions, tilt, cleaning area and the number of separate sections.
- Where the operator will stand, how equipment reaches the panels and how it moves between rows.
- Water source, water route, available power and your normal cleaning schedule.
- Preferred model, quantity, required accessories and delivery destination.
Follow the PV module manufacturer’s cleaning instructions. A factory recommendation should identify the proposed model and the conditions it has been assessed for. Confirm the final specification, supply list, warranty and delivery terms before ordering.