User Manual
6 
Mounting 
Warning 
(1)  Do not drop or apply impact during transportation or installation; It will cause damage to the 
product and  result in operation failure. 
(2)  Do not install in areas of high humidity or high temperature. Operation outside of the product 
specification range may cause damage to the product or operation failure, or shorten the product 
life. 
(3)  Connect the product ensuring the direction of "1"(IN) and "2"(OUT) for air direction or an arrow. 
Incorrect connections may cause malfunction. 
(4)  Install with adequate space for maintenance beneath the product. Refer to 7. Dimensions (page 
17) for necessary space. 
(5)  Install vertically so that outlet of drain is facing downward. It cannot be used in horizontal or upward 
direction. 
Caution 
(1)  When the bowl is installed on HF2-BF∗ series, install them so that the lock button lines up to the 
groove of the front (or the back) of the body to avoid drop or damage of the bowl. 
Piping 
Warning 
(1)  Before piping, perform flushing or cleaning of the piping, etc. to remove any cutting chips, cutting 
oil, solid foreign matter, etc. from the piping. Contamination of piping may cause damage or 
malfunction. 
(2)  When screwing together pipes and fittings, etc., be certain that chips from the pipe threads and 
sealant do not get inside the pipe. When a sealant tape is used, leave 1.5 to 2 thread ridges 
exposed at the end of the threads. 
(3)  Connect piping/fittings using the recommended torque while holding the female thread side tightly. 
Insufficient tightening torque can cause loose piping or sealing failure. Excess tightening torque 
may cause damage to threads. If the female side is not held while tightening, excessive force will 
be applied to the bracket directly, causing breakage. 
Recommended tightening torque (Unit: Nm)
Thread  1/8  1/4  3/8  1/2 
Torque  7 to 9  12 to 14
22 to 24
28 to 30
(4)  When a one-touch fitting of SMC is used, refer to the operation manual for the one-touch fitting. 
(5)  Do not apply torsion or bending moment other than the weight of the product itself. External piping 
needs to be supported separately as it may cause damage. Non-flexible piping like steel tube is 
susceptible to excessive moment load or vibration. Insert flexible tubes to prevent this. 
2022-10-1811:23
DP 097499










