Curious: is this for install in America?
The American standard electrical is 60Hz;
Is the carwash system based on 60Hz? If not, then if the HMI/PLC is expecting 50Hz for counts, it'd be difficult to get your timing correct on US power.
Are the plumbing fittings American standard; If not you'll likely want to track down a US supplier for your replacement fittings and hoses and tubes.
Are the bolts/nuts American standard? If not, you'll likely want to track down a local supplier for your nuts/bolts.
If not...you'll likely have to order from overseas, and deal with the down time....or just canabalize one for the other (assuming you have two systems on hand).