19
| User’s Manual
Sentinel
™
Alarm Image
Problem
Cause
Solution
High Sump
Alarm
Foaming oil in vacuum
chamber
High inlet moisture
Transportation
Be sure intake is full submerged.
Some oils will foam under normal operating condi-
tions. Lower vacuum level by opening air bleed valve
slowly until vacuum reaches 23 in/HG (584 mm).
Lower temperature set point.
Further maintenance:
If the sump is full a warning screen will be displayed
and the light on the gauge screen titled “High Sump”
will appear red.
1) Drain sump via the port located on the bottom
2) Change coalescing filter.
3) Check vacuum pump oil. It should be clear if not
change oil and replace vacuum pump coalescing filter.
4) Confirm the vacuum chamber overflow switch is
functioning by removing the vacuum chamber cover
and exercising the float switch, watch for the “Vacuum
Chamber Overflow” alarm to be display. If the switch
works then oil entered the sump because the Sentinel
was placed on its side or the oil was allowed to foam.
High level float switch
failure
Check high level switch in vacuum chamber.
High Level
Condensate
Alarm
Condensate tank full
Drain condensate tank or turn on automatic drain
function.
Float switch faulty
Check for stuck or broken switch. Repair or replace
by removing from the back side of the condensate
tank.
Fast Fill Alarm
Excessive pressure on
the inlet
Restrict inlet line.
Oil left in system
Run empty before starting.
Over Pressure
Alarm
The pressure in the re-
turn line exceeds 60psi
Minimize pressure losses in return hose.
Maintenance
Screen Dis-
played
The Sentinel has
exceeded its mainte-
nance timer interval
Change filters.
High Ambient
Temperature
Warning
High temperature
inside cabinet
Reset the thermostat, which is located under the
top door, by pressing the button in the middle.
Other actions include:
1. Remove doors
2. Install fan
3. Insure proper ventilation
