Nilfisk-Advance 107146895, Руководство по обслуживанию, Страница: 88 / 101

SM_MH 3M_4M Ver.1.2_May 2016
Adjustment / Test
88
G
MH 4M By-pass valve
Test manometer, 1206358
Counter nut
By-pass valve—opening pressure adjustment.
Adjustment screw
Install the test manometer, 1206358, between the outlet of the machine and the high pressure hose.
Start machine in cold water with full water volume (water regulator closed) with correct high pressure
nozzle, and read the output pressure on the test manometer.
Dismount the high pressure hose from the test manometer and start machine with open test mano-
meter.
Slowly close the needle valve on the test manometer, and force the pressure up.
The safety valve opening pressure on the test manometer must be between 25 and 30 bar higher
than the output pressure you had when running with the lance at full pressure.
Male coupling, 1220126