5
INSTALLATION
Switch Inputs
Switch inputs are connected to P2. The connections for these inputs are not polarity sensitive and can be connected to either
terminal. The switch inputs should be dry contact closures only.
WARNING:
Applying voltage to these terminals will damage the controller. The switches can be either normally open or
normally closed, but all switches must be the same. If the controller is set for normally open switches, all switches must be
open for the unit to run. If the controller is set for normally closed switches, all switches must be closed for the unit to run.
NOTE:
J10 selects normally open or normally closed operation. When J10 is in the A position, the unit is configured for
normally open switches. When J10 is in the B position, the unit is configured for normally closed switches.
Pressure Fault Switch
On systems where a low feed pressure shut down is required, a feed pressure switch can be connected to the pressure fault
input of P2. If a high pump pressure shut down is required, a high pressure switch can be connected to this input. If both low
feed pressure and high pump pressure shut down are required, both switches can be connected to this input. Both switches
must be either normally open or normally closed to operate properly.
Pretreat Switch
In systems with pretreatment, a pretreat lockout switch can be connected to the pretreat input of P2. This switch should
operate when the pretreatment device is out of service.
NOTE:
The output from the pretreatment device must be a dry contact and must not supply voltage.
Tank Full Switch
Connecting a tank full switch to the tank full input of P2 can cause the unit to shut down for a tank full condition. J9 selects a
short or long tank full restart.
