Bacharach 3015-4256 Working with the P-CHKFunction, Overview, Keypad Functions, Screen Display

Working with the P-CHK Function

Overview

The P-CHKfunction (Pressure Check Function) (Page 17) is useful to a service technician for troubleshooting a flow fault problem. The monitor will trigger a flow fault if the pressure drop from ambient is less than 0.2 psi during a purge cycle, and 0.5 psi during a measurement cycle.

Keypad Functions

The Left Arrow Keypad button toggles the purge valve open and closed. Note that an asterisk (*) appears when the purge valve is open (purging).

The Down Arrow Keypad button toggles the pump ON and OFF.

Pressing the ENTER button stores the current manifold pressure shown on the left to the ambient pressure shown on the right (must be done with the pump OFF).

Screen Display

14.07* AMB14.05 -0.02dif <1000>

Current Manifold Pressure ∗	Stored Ambient Pressure
Pressure Difference	Fault Code

Current Manifold Pressure – Current manifold pressure in psia. Stored Ambient Pressure – Stored ambient pressure in psia.

Pressure Difference – The difference between the current manifold pressure and the stored ambient pressure.

Fault Code – Current fault code (Page 19).

Purge Valve Asterisk (∗) – When viewing the pressure-check screen, the purge valve can be opened and closed by pressing the Left Arrow Keypad button. An asterisk appears on the display when the purge valve is open.

22 Instruction 3015-4256