9
Maintenance
！ Warning
(1) Perform inspection on a regular basis as necessary, such as at the beginning of
operation, to verify that the Time Delay Valve operates properly.
(2) Check whether the bolts on the mounting surface or the VR21 body are loose or
damaged.
If the bolts are loose, refer to the drawing below and use a hexagon wrench or a Phillips head
screwdriver to tighten them.
Cross recessed round head screw
Reference torque 1.4 to 1.6 N・m
Hexagon socket head cap screw
Reference torque 1.4 to 1.6 N・m
Mounting section
Cross recessed round head screw
Reference torque 1.4 to 1.6 N
2022-09-0109:58
DP087420
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