How should cleaning results on machine-tool exteriors be inspected and recorded?

Before configuring anything, it helps to put the factory figures for the HMW3 hand-pushed steam cleaning machine on the table:

• Machine dimensions: L1150 × W520 × H1030 mm, hand-push movement
• Heating power: 4.5 kW with a PTC semiconductor heater
• Clean water tank: 50 L, tap-water inlet with a 4-point internal-tooth fitting
• Cleaning modes: dry steam and wet steam, applied with a high-pressure water gun and nozzle
• Working power supply: 48 V battery
• Safety design: leakage, short-circuit, high-temperature, high-voltage, water-shortage and high-voltage-explosion protection

Two variants are listed: HMW3 without battery and HMW3 including battery. The configuration choices below revolve around those published numbers — and around the details the datasheet leaves open, which a supplier should confirm with you.

The footprint is 520 mm wide and just over one metre long, so the machine fits standard ward doorways and lifts, but it is pushed by hand rather than driven. For a supplier, this drives two questions before anything is quoted:

• How far does the operator move between the cleaning point and the water tap? A 50 L tank filled from a standard tap determines how often the crew refills, and the distance to the nearest tap determines how tiring that becomes.
• Is there storage where the machine can be parked and charged between shifts? If not, the machine has to travel farther with a flat battery, which shapes the rest of the setup.

For long, multi-ward routes, operators usually appreciate a hand-push machine kept close to the area it serves rather than one shared across floors. For a small clinic or a single ward, one unit can cover a whole area.

This is where the two variants part ways, and it is the most common decision in a supplier-configured order:

• HMW3 including battery: the battery comes with the machine, so the unit is ready to plug in, charge and push. This is the simpler path for a first deployment, and it guarantees the battery matches the 48 V working power supply the machine expects.
• HMW3 without battery: the machine ships with a battery-free 48 V system. Where the site already runs 48 V packs on other equipment, those packs can serve as a swap option between shifts instead of waiting for a charge cycle. If you take this route, send the model number and capacity of your existing packs to the supplier and have them verified before shipping.

Runtime, charger output and charge time are not on the public datasheet. A supplier should state, in writing, which battery and charger combination the quote includes and what runtime that combination gives under your shift pattern — day shift and night-shift cleaning crews rarely share the same charge window.

The HMW3 switches between dry steam and wet steam with the same high-pressure gun and nozzle, and both modes run off the 4.5 kW PTC heater. A supplier who understands hospital workflows will help you assign a mode to each task before the machine arrives:

• Dry steam carries less free moisture, so it suits frames, beds and equipment where you want high-temperature treatment without leaving puddles on the floor or dripping inside device housings.
• Wet steam delivers more moisture with the heat, which is more useful on encrusted soiling and on surfaces that also need physical rinsing.

The practical step here is a short surface map: list the items the crew cleans daily — bed frames, mattresses where the protocol allows, IV stands, trolleys, wheelchairs, the exterior of medical machinery — and mark each one dry steam or wet steam. The supplier uses that map to confirm the nozzle set and the mode settings, and your operators get a routine that does not depend on one person's memory.

The inlet takes tap water through a 4-point internal-tooth fitting, and the heater is a 4.5 kW PTC semiconductor unit protected against leakage, short circuit, high temperature, high voltage, water shortage and high-voltage explosion. None of that is exotic, but a supplier should still walk your team through three site items:

• Water supply: confirm the tap location, the hose run to the machine, and that the inlet fitting matches your tap. An adapter sorted out before shipping avoids a stalled commissioning day.
• Heating and power: the 4.5 kW heater plus the 48 V battery system needs a charging point on each shift route, with the charger specifications confirmed by the supplier rather than assumed.
• Safety checks: the protection functions are built in, but the operating routine should still include the water-shortage and leakage checks your facility's electrical safety procedure requires, and a record of who performs them.

A competent manufacturer will answer the following without hesitation, and the answers should end up in the written quotation. Items marked "not published" are missing from the public product page — request them in writing instead of guessing:

• Steam temperature and steam pressure for dry and wet steam (not published on the product page)
• Battery capacity, runtime per charge, and charger output and charge time (not published on the product page)
• Machine weight, hose and wand lengths, and the included accessory and nozzle list (not published on the product page)
• Whether your existing 48 V packs are compatible with the without-battery variant
• Spare-parts supply, warranty terms, and the training or documentation included with delivery

Shenzhen PowerDe Automation Precision Equipment Co., Ltd. manufactures the HMW3 in Shenzhen alongside a range of cleaning equipment, and the company's engineering services — customisation and solutions, product development, and hardware testing — cover exactly the kind of pre-order work described above. When you contact the sales team, send the site notes from steps 1 to 4: floor plan or ward layout, your decision on the battery variant, the surface map with dry-steam and wet-steam assignments, and the water and charging points you have available. The manufacturer then confirms the configuration, fills the gaps marked "not published," and issues a quotation for the HMW3 including battery or the without-battery variant that matches your site.