Operation Check Of Pressure Reducing Valve - YASKAWA MOTOMAN-MPX2600 Instructions Manual

180788-1CD
MPX2600

10.3.1.3 Operation Check of Pressure Reducing Valve

10 Maintenance and Inspection
10.3 Inspection of the Explosion-Proof Device
Measure the air supply pressure of the air for the explosion-proof in the
pressure switch unit by using a pressure gauge.
For the pressure gauge connection, refer to Fig. 10-12 "Operation Check
of Pressure Reducing Valve".
The pressure gauge, joints and air tubes used for this inspection are
prepared by customer.
1. Turn OFF the power supply to the DX200.
2. Unscrew the hexagon socket head cap screws to remove the pressure
unit cover. (Refer to Fig. 10-10 "Pressure Switch Unit Cover".)
3. As shown in the Fig. 10-12, connect the pressure gauge between the
pressure switch unit and the manipulator.
4. Set the pressure of both purging air and operation air reducing valves
as shown in Table 10-9 "List of Setting Value for Pressure Reducing
Valve for Purging Pressure and OperatingPressure".
Refer to section 10.3.1.2 "Operation Method of Pressure Reducing
Valve" for the reducing valve operation.
Table 10-9: List of Setting Value for Pressure Reducing Valve for Purging
Pressure and OperatingPressure
Pressure reducing valve
for purging pressure
Pressure reducing valve
for the operating pressure
5. Turn ON the power supply to the DX200 and start purging. Check that
the pressure is keeping between 0.18 MPa and 0.20 MPa while
purging.
6. After purging is complete, wait for a few minutes and check that the
pressure is declined between 0.01 MPa and 0.02 MPa.
(Immediately after the purging operation, pressure may fluctuate.
Therefore, wait for a few minutes after completing the purging to check
the pressure.)
7. Turn OFF the power supply to the DX200 and then, re-install the cover
with the hexagon socket head cap screws. (Refer to Fig. 10-10.)
10-18
Pressure [MPa]
0.18 to 0.20
0.01 to 0.02
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