Crane OGP2022CO Series, Installation Manual, Page: 17 / 29

17
INTRODUCTION
Thank you for purchasing your new Barnes brand level
control. The ESPS-150E level control switch has been de-
signed to provide years of reliable service when properly
used with Barnes brand automatic pumps and packages.
Please completely read this manual and follow all instal-
lation instructions to insure your level control provides the
best service possible.
This switch is designed to be a “Non-
Serviceable” item. If a switch is suspected
to be inoperative, contact your local service
center for service replacement options.
The level control contains pressure sensitive components
and diaphragms. Care should be taken when handling
the unit to insure damage does not occur. Damage may
result in improper function or undesirable performance. All
actuation points are factory set and cannot be changed.
Any attempt to change the actuation points will void the
warranty.
Before placing switch into service, switch should be
brought to operational temperature range. Excessive or
direct heating or cooling should NOT be used.
OPERATION TEMPERATURE RANGE:
+35°F (2°C) to +120°F (49°C)
SHIPPING / STORAGE TEMPERATURE:
-20°F (-29°C) to +150F (66°C)
FUNDAMENTALS OF OPERATION
The ESPS-150E Level control is designed to plug directly
into the top of a Barnes brand OGV or OGP Automatic
Series grinder pump. It will turn the pump “On” at a
point below the alarm bell as the liquid level rises in the
basin. The pump will then run until the liquid level drops
to a point above the lower switch housing. In the event
the pump does not turn on or the pump cannot keep up
with the inflow, the alarm circuit will be activated once the
liquid level submerges the Alarm Air Bell Tube. It will stay
activated until the condition is corrected and the liquid
level drops below the Alarm Air Bell Tube.
FIGURE 12
SWITCH COMPONENT DESCRIPTION