Cowest Machinery's WSR-400MINI Succeeds in Guangzhou IFC's High-Rise Glass Replacement

2 year ago

31 0 

Guangdong Cowest Machinery Equipment LTD

5 year

Product details

Product Overview

The WSR-400MINI A is the previous generation of our compact glass lifting robot. It is rated at 400kg and lifts to a 3000mm height, takes glass, marble and tile, and walks itself into a lift, rides up with the operator and comes out on the floor being worked on. Four Dia.290mm suction cups hold the panel and all powered movement on the load side is electric. It is no longer sold, and this page exists for the people who still own one or who are comparing it against the machine we build now.

Its load curves are published, and it is worth reading them before buying anything at this weight. Three curves are supplied — 400kg, 300kg and 200kg — against a horizontal axis of 0 to 2 metres of arm extension, and the shape of them says one thing plainly: the heavier the panel, the less the arm may be pushed out. A 200kg panel can be carried at about 1.6m of reach, a 300kg panel at about 1.3m, and a 400kg panel at about 1.0m. Beyond the line for your panel weight, you are outside the published envelope. Worth noting for anyone comparing the two generations: these curves are effectively identical to the ones published for the current WSR-400MINI. Reach under load is not where this older machine falls short.

Where it does fall short is structure. The suction head is fixed and the counterweight is fixed — neither comes off, and removing the counterweight would not shorten the machine even if it could. The 1745mm length and the 730mm width are therefore what it measures in every configuration. That is still inside an ordinary passenger lift, and on interior refurbishment work the machine usually ends up driving to the floor rather than being craned through the facade. What you get in return is a simpler machine: one vacuum circuit instead of two pumps and two circuits, straightforward mechanics, and wearing parts that are shared with the current model, which is what makes it inexpensive to keep running.

Product Specifications

Item	Value
Model	WSR-400MINI A — previous generation
Rated load capacity	400kg
Max. lifting height	3000mm
Height forward extension	500mm
Reach at 400kg	about 1.0m
Reach at 300kg	about 1.3m
Reach at 200kg	about 1.6m
Published load curves	400kg / 300kg / 200kg
Suction cups	4 × Dia.290mm
Vacuum indication	Digital display and pressure gauge
Driving speed	0-4km/h
Rated power	1.2kW
Drive model	24V, rear wheel drive
Uphill capability	15% gradient
Electric hydraulic tilting	Forwards and backwards, vertical to horizontal
Pad frame vertical movement	180° up / down, automatic
Boom extension and retraction	Automatic
Powered arm elevation and descent	Automatic
Lateral side shift	100mm, automatic
Pad frame tilt left / right	90°, manual
Pad frame rotation	360°, manual
Suction head	Fixed, not removable
Counterweight	Fixed, not removable
Rear standing platform	None
Vacuum system	Single circuit
Battery	DC12V × 2 × 100Ah
Battery charger	AC110V-220V
Continuous operating time	4h to 8h
Machine length, body	1745mm (1153mm chassis + 592mm forward reach)
Width across	730mm
Minimum height, pad frame down	1406mm
Height, pad frame raised	3182mm
Suction frame outside dimensions	1775 × 1010mm
Suction cup spacing	1010mm across, 400mm fore and aft
Overall application	Glass, marble and tile handling, moving and installation

The machine measures 1745mm long and 730mm across whether or not anything is removed from it, so those two numbers are the ones to check against your lift car and your door openings before you order. Suction cups sit on a 1010 × 400mm pattern inside a 1775 × 1010mm frame, which tells you the panel size the head can cover.

Product Features

1. It goes into a passenger lift on its own drive. At 730mm across and 1745mm long it clears an ordinary residential lift door and car, so panels for upper floors are carried up by the machine itself instead of by crane through the facade, by hand up a staircase or by a second machine waiting on the ground for the return trip. On refurbishment work this is usually the single largest saving on the job.

2. The load curves are published, and they are honest. Three curves — 400kg, 300kg and 200kg — are supplied against 0 to 2m of arm extension, and the maximum load accords the length of the extended arm. A 400kg panel is carried at about 1.0m of reach, a 300kg panel at about 1.3m, a 200kg panel at about 1.6m. You can work out from the graph what your panel and your wall offset actually allow before the machine reaches the site, rather than finding out with a panel hanging. These are the same curves published for the current WSR-400MINI, so this older machine loses nothing here.

3. It takes a panel weighing up to 400kg to 3000mm high with 500mm of forward arm extension, which covers partition glass, shopfront infill, balustrade panels, marble and tile on an occupied floor. Four Dia.290mm cups on a single vacuum circuit with a digital display and a pressure gauge give a direct reading of the holding margin rather than an indication lamp only.

4. All powered movement on the load side is electric and remote controlled — lifting, boom extension and retraction, arm elevation and descent, rotation, tilting and side shifting. The handset stays in the operator's hand, and millimetre-level speed is available for the last few millimetres of placement. Side turning and pad frame rotation are manual, at 90° on both sides and 360° respectively.

5. A 24V motor on the rear wheel gives 15% uphill capability, so the machine handles site ramps and uneven ground without a separate crane. It is steered and driven at walking pace, 0-4km/h, which is faster than a man walks with a panel in his hands.

6. Two 12V 100Ah batteries give 4 to 8 working hours per charge, which is a full shift on one charge at typical glazing workloads. The charger takes AC110V-220V, so it can be charged from either a 110V or a 220V supply without a converter.

7. The machine has a low centre of gravity and a rear-wheel drive layout, which keeps the load close to the axle through tilts and travel. The pad frame tilts forwards and backwards from vertical to horizontal under electric hydraulic power, so a panel can be brought from flat to upright without the operator handling it.

8. Every safety function operates without the operator holding anything: automatic park brake, low vacuum warning, low battery warning, charging protection, side-fall protection and an emergency stop. The digital vacuum display and the pressure gauge are on the machine, so a loss of holding is visible and audible at the panel.

Product Summary

The WSR-400MINI A is the discontinued previous generation of our compact glass lifter, kept on this page because it remains a working machine for one set of conditions and one kind of buyer. It suits an operator who needs a self-propelled vacuum lifter on upper-floor refurbishment work, whose panels weigh 200 to 400kg with a wall offset inside about 1.0m, and who wants the cheapest way to put this class of machine on a site. It measures 730mm across and 1745mm long, so it drives into a passenger lift without being stripped down, and it shares its rated 400kg load, its Dia.290mm cups and its published load curves with the machine we build now.

What it does not have is the current model's flexibility. The suction head, the counterweight and the rear standing platform all come off on the WSR-400MINI, so it can be shortened further for a tight lift car and lightened for transport; on this machine none of them come off and the length stays at 1745mm whatever you do. The current model also runs a dual-pump dual-circuit vacuum instead of a single circuit, and works 6 to 8 hours per charge against 4 to 8 hours here. Its lifting height is 3200mm rather than 3000mm.

It is not the machine to buy if your lift car is tight enough that 447mm of extra body length is the difference between going in and not, if you need more than 3000mm of lift, or if you intend to run it for years without budgeting for battery and vacuum pump replacement. Where the two machines are otherwise equivalent, the current one is the better machine and this one is the cheaper one to own.

FAQ

1. Is this machine still sold?

No. This is the previous generation and it has been replaced by the WSR-400MINI, which is the machine we build and support now. This page is kept because the model is still in use on site and because the difference between the two matters when you are deciding which one to buy. Spare parts, vacuum pumps, belts, cylinders and batteries for this generation remain available — contact us with the serial number and we will confirm what is in stock.

2. What is the difference between the WSR-400MINI A and the current WSR-400MINI?

Both machines are rated at 400kg, both lift to within 3000mm of the same figure, both use 4 × Dia.290mm cups, both are 730mm across and both drive into a passenger lift. The published load curves are effectively the same too, so reach under load is not a difference. Four things actually are. First, height: 3000mm here against 3200mm on the current model. Second, structure: the suction head, counterweight and rear standing platform are all removable on the current model and none of them come off here, which is what lets it shorten to 1298mm against 1745mm on this machine. Third, vacuum: dual-pump dual-circuit on the current model, single circuit here. Fourth, running time: 6 to 8 hours per charge against 4 to 8 hours here.

3. How far can it reach, and how much can it lift at that reach?

Up to 3000mm lifting height with 500mm of forward arm extension from the chassis. The load depends on how far the arm is out, and that relationship is set out in the load curves supplied with the machine — 400kg, 300kg and 200kg. About 1.0m of reach at 400kg, 1.3m at 300kg and 1.6m at 200kg; past those points you are outside the published envelope for that weight. Send us your panel weight and the distance from the wall to the machine centre and we will read the correct point off the curve for you.

4. Will it fit in my lift?

The machine is 730mm across and 1745mm long, and unlike the current model there is nothing you can remove to shorten it further, so those are the figures to check. It clears an ordinary passenger lift door and car. Please send us your lift car internal dimensions and the door opening width before you order and we will confirm it against them. Note that the packing size is larger than the machine itself, so if a lift is tight enough to be marginal for the machine it is worth checking the crate as well.

5. What is the running cost of keeping this machine going?

The two items that age are the batteries and the vacuum pump, and both are replaceable and shared with the current model. The batteries are DC12V 100Ah and the charger takes AC110V-220V. Maintained as described in the manual, a battery pack is good for roughly four years; the vacuum pump and belts are consumable items and are quoted separately. Because this generation shares its main wearing parts with the current machine, spares are simpler to find than for most discontinued equipment — send us the serial number and we will confirm availability before you commit.

6. Can parts still be bought for it?

Yes. The machine is built from common hardware and the vacuum and hydraulic components are shared with the current WSR-400MINI, so the parts that actually fail are parts you can buy. We supply them, and where a part is bought locally we will tell you what to ask for at a hardware or forklift parts counter. Send the serial number and a photograph of the failed item and we will identify it before you order anything.