Cla-Val PC-22D Electronic Pump Control Panel
Installation, Operation & Maintenance Manual
Page | 14
The pressure switch signal shall be terminated on terminal block
21 & 22
. This contact is pre-wired as a
dry-contact input. When the contact is open, the controller will interpret as “minimum pressure
not
met”.
When the contact is closed, the controller will interpret as “minimum pressure met”.
If a pressure switch is not used!
If a pressure switch is not used, a jumper must be inserted across terminal block 21 & 22.
4.5
Grounding & Shielding Function
Grounding increases the resistance against disturbances from electromagnetic interferences. From the
field side, the ground wire shall be connected to any ground potential (green terminal block). The terminal
block is internally connect to the carrier rail.
NOTICE
Figure 9. Remote Start, Valve Limit Switch, & Pressure Switch Connections.
Figure 10. Grounding Connection Terminal Block.
