Orion RKS250F-S Operation Manual page 45

IMPORTANT
● An alarm will be generated and the product will not operate if the inlet and outlet ports are
reversed.
● Be careful during piping installation not to allow dirt or other foreign material to enter the
water circuit, etc.
● Choose a PVC pipe or spring-protected hose to avoid kinks in the pump intake.
(4) Perform piping so that no air pockets form. Water will not circulate if there are air pockets in the
water piping on the intake side. (In cases where there is horizontal piping, such areas of piping
might not be able to fill with water even after priming, thus preventing water circulation. In such
cases, piping should be installed at some slope, or other measures should be performed such as
installation of a floor cistern to force water in through the piping.)
(5) Connection method and names of included parts (※ Piping shown in double-dot-dashed lines are
customer supplied components.)
■ Water inlet
Water inlet
Rp3/4
PVC elbow
（VP 20 ）
Hose clamp φ60
Installation
Piping Installation
PVC valve socket
（VP 20 ）
Water outlet
Rp3/4
PVC pipe VP20
③
②
③
Foot valve
①
Strainer filter
■ Water outlet
PVC valve socket
（VP 20 ）
PVC elbow
（VP 20 ）
No.
1 Strainer
assembly
2 Rubber coupling
3 Hose clamp
42
Name Comments
component part
①Foot valve
②Strainer filter
③Hose clamp φ60
φ25 × φ31
φ32 Wire type