
The plumbing and instruments on the machine itself, as opposed to the hose that runs out to the gun. Water inlet filters, short high pressure assemblies made to a specific machine, suction hose tails, gauges, pressure switches and coupling flanges. These are the parts that decide whether a pump gets clean water at the right pressure and whether the machine knows when to stop.
Pressure cleaner hose, filter, gauge or switch - Coupling flange, suits MC2520.
| Part | Coupling flange |
|---|---|
| Fits | MC2520 |
| Part number | 115 50110279 |
| Filters | Comet inlet filters, with and without flow regulator |
| Gauges | Machine mounted, model specific |
| Pressure switches | 1/8 inch PR5 and 1/4 inch 30 bar |
| Hose assemblies | Machine specific, supplied made up |
| Fitment | Comet built machines and the hot water units around them |
A pressure switch that chatters is usually not faulty. Nine times out of ten it is an unloader that is not holding, so the pressure bleeds off the moment the pump stops, the switch closes again, and the machine hunts. Fit an unloader kit first and you will save yourself a switch and a control board.
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