Zontes ZT125-M 2022, Maintenance Manual

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2.2 Check of pressure relief valve
Pass 120kPa (1.22 Kgf/cm2, 17.4 psi) compressed air into the big pipe, put the water filler into the water and let stand for 10
seconds. The small pipe should be free of bubbles. Increase the compressed air to 130kPa (1.33 Kgf/cm2, 18.9 psi). Bubbles
appear.
M350
The overall tightness check is consistent with the M310. The inspection method of pressure relief
valve is the same. The gas pressure is 100kPa(1.02Kgf /cm2, 14.5 psi), and there is no bubble, while the
gas pressure is 110kPa(1.12Kgf /cm2, 16 psi),and there are bubbles.
3. Auxiliary water tank
First check whether the rubber cover is aging and cracked, if any, replace it. If the appearance is good,
then check the air tightness.
Seal the two small water outlets and open the black plastic cover of the water tank for air
tightness inspection.
Continue to seal the small water outlet, fill the auxiliary tank with water and turn the auxiliary
tank upside down, and observe whether the rubber cover of the water tank seeps. If there is
seepage, it is unqualified. Pour out the water after checking the tightness, remove the plug and let
the auxiliary water tank dry naturally or blow it dry with a dust blower.
4. Aluminum inlet pipe and aluminum outlet pipe(M310)
Check whether the weld is cracked or cracked; check whether the buffer rubber is aging and
cracked. If the appearance is good, then check the air tightness.
Seal one end and ventilate from the other end to check air tightness.
5. Small water tank(M310)
Check whether the fan and net cover are firmly assembled, and there should be no jamming
of the rotating fan blades. Check whether the cushion rubber is aging and cracked. Check
whether the fan cable is damaged.
Seal one water outlet and ventilate from the other end for air tightness inspection.
The blue of the fan plug is the positive pole, and the black is the negative pole. Find a battery
with sufficient power and connect the wires according to the positive and negative poles, and
check whether the fan draws air backwards.
Compressed air with lower air pressure can be blown from the back to the water tank from a
long distance to clean up foreign objects on the surface. Or use a low-pressure water gun to
spray the radiating fins from a long distance to clean up foreign objects on the surface.
1-Water tank front guard bolt*4 2-Water tank front guard 3-Water tank 4-Fan nut 5-Fan 6-Fan motor
7-Fan Guard 8-Fan Guard Bolt*3 9-Fan Motor Bolt*3
6. Water and oil shared sensor
For details on sensor detection and disassembly methods, please refer to the section "Electronic Injection System" chapter EFI
Parts Fault Diagnosis and Elimination.