Between the selection of an oil purifier and the moment it stands in the building, the easiest place to lose time is the second half. The throughput has been agreed, the accuracy has been agreed, the quotation has been accepted, and then the machine will not go through the door, or it goes through and cannot be moved into position. Going back to change the plan at that point costs more than choosing another machine would have.
The dimensions are only one line on the drawing
The overall dimensions of the ZYD-100 are 1200×1400×1800 mm and the machine weighs approx. 720 kg. These three figures take up one line in the specification, but on site they turn into several concrete measurements: the clear width and height of the doorway, the width of the passage around a corner, and how far the machine has to stand back from the wall.
It is worth noting that the dimensions in the specification normally refer to the machine itself. A mobile model on castors, a model with external pipework, and the allowance for fittings and cabling all appear as separate lines on the drawing, while on site they occupy the same space. Checking against the largest outline is safer than checking against the machine body.
The weight matters more than the dimensions
The figure of approx. 720 kg turns into three things on site: the floor loading, the way the machine is lifted or moved, and the requirement on the ground itself for levelness and protection. These conditions are normally not in the technical documentation of the equipment; they belong to the civil and safety specialists.
If the machine is to stand on an upper floor, the loading capacity of the transport route and the ability of the staircase to take it have to be confirmed in advance. If it stands on a ground floor, the floor has to be checked for the flatness the machine needs to run stably, and local levelling may be required. Once such a condition turns up after the machine has arrived, handling it costs a great deal more than verifying it beforehand.
| Stage of the delivery | Which dimensions to measure | Where it usually goes wrong |
|---|---|---|
| Entering the building | Clear width and height of the doorway, the open height of a roller shutter | The frame decoration, the access control and the warning signs take up room of their own |
| Moving inside the plant | Width of the passage, diagonal dimension at the corners | The angle between two pipe runs at a corner |
| Setting it in position | The overall outline plus the working space around it | Room was left for the doorway but none for the maintenance side |
| Later use | The space needed to withdraw the elements, drain the oil and clean down | The machine stands so close to the wall that the element cannot be pulled out |
The maintenance allowance belongs in the selection
Getting the machine into the room is only the first step, because the machine still has to be used. The elements have to be able to come out, the dirty oil needs somewhere to drain, the pipework has to be connected and the cabinet door has to open fully. All of this needs space around the machine, and that space cannot be added once the machine is in place.
- Leave the withdrawal length of the elements on the side they are pulled from. The standard configuration of the ZYD-100 is 5 150-500-5 fine elements in parallel, and replacing them one by one needs working room.
- Leave room near the drain point for the collection container and the drain hose.
- Leave standing room in front of the control cabinet, counting the full width of the open door.
- Plan the route of the inlet and outlet pipework and the cables in advance, so that nothing has to be run across the floor later.
Turn the order round
The difference between selecting the equipment first and looking at the site first is considerable. The second order is quite concrete: once the candidate models are on the table, go and measure the doorway, the passage and the floor space available, then go back to the specification and check whether the dimensions and the weight fall inside what has been measured. A model that falls near the limit needs its setting down and its maintenance moves checked as well.
This is ten minutes of work, and it stands in front of a path that would otherwise take weeks.
The overall dimensions are not one line in the specification; they are a doorway, a corner and a floor slab, and measuring them once before the delivery is far cheaper than taking the machine apart afterwards.
