__________________________________________________Chapter 4 – Smoke Control Section, Page 4-41
Wash System – Troubleshooting (Cont.)
Wash Control Cabinet
Detergent Pump
Overview
The detergent pump is an integral part of the proper operation of the ClearAir Wash Cycle. The pump is
located within the Wash Down Control Cabinet (Refer to Fig. 4-41-1). When the Wash Cycle begins, the
pump is energized and draws detergent up from the detergent container, pushing it through the copper
tubing, flow switch, brass check valve and into the hot water line.
Initial Operation
To prime and operate the pump for the first time, it is recommended that water be used instead of
detergent to prevent detergent from spilling in case of leaks at the system's fittings.
The pump is operating properly when both upper and lower poppet checks in the pump head can be seen
moving up and down slightly.
Detergent Pump
Detergent Flow
Switch
Brass Check
Valve
Temperature
Pressure Gauge
Detergent
Container
Outlet Hand
Valve
Backflow
Preventer
Air Gap
Line Strainer
Inlet Hand
Valve
Figure 4-41-1
Typical Main Control Cabinet
(Sub Panel is the Same Except
Without Control Compartment
Control Compartment.
Appearance may vary
depending upon
Model Number of
Control. There is not a
Control Compartment
on Sub Panels.
