Hale Trailer - Manual (Page 25)

25 Introduction - Skid & Trailer
p/n: 029-0810-00-0
In tro d u ctio n
❑
Operator Control Panel, Typical
(See Figure F: “Typical - Skid / Trailer Control Panel Arrangement,” on page
13.)
Hale skid or trailer Operator Control Panels vary depended on customer
order modifications and may differ from those displayed in this manual. Var-
ious components used in your system, such as the ENFO IV Engine Moni-
tor, TPM Valving, SVS Valves, etc. offer their own Installation and Service
manuals and are provided separately with your system.
A brief description of the basic operator control panel components follows:
Pressure Gauges, Vacuum and Master Discharge
❑ Intake Gauge - connected to pump suction and shows the vacuum when
pumping from draft and pressure when pumping from a positive intake
(e.g. hydrant). The gauge shows vacuum in inches of mercury.
❑ Master Discharge Gauge - connected to pump discharge. The gauge
shows pounds per square inch (PSI).
Control Display Light
The control panel display light illuminates whenever the engine ignition
switch is ON.
Relief Valve
The Hale Valve System is a mechanical system, consisting of an internal
relief valve, which by-passes water to the suction side of the pump, and a
single panel-mounted control valve, to provide control of pump pressure
within NFPA requirements. Various models are offered to meet customer
and NFPA requirements, including P35, P30 and TPM. (See Figure F: “Typ-
ical - Skid / Trailer Control Panel Arrangement,” on page 13.)
See separate manual provided for additional information. Also see Heading
2a.6 “Pressure and Relief Valve Control” on page 30.
Note: As an option, an electronic governor can replace the relief valve control on
most electronic engines. The electronic governor is not available on mechanically
controlled engines. (See Figure G: “Optional - Typical Skid / Trailer Electronic
Governor Control Panel,” on page 14.) Also see Heading 2a.4 “Engine Governor
Control, Optional” on page 29.
ENFO IV Engine Monitor
The ENFO IV electronic monitoring unit displays critical engine operating
information and illuminates a WARNING light to alert the operator if an
engine related problem develops. See separate manual provided for addi-
tional information.