4
OPERATION
1. Once all electrical and drain connections have been made
turn unit on.
2. No lubrication is required for the motor because it is a
permanent pre-lube design. Excessive dirt/oil should be
removed.
3. Make sure oil is draining easily through drain pipe.
CHANGING FILTERS
CAUTION: Always make sure that the unit is turned off
before changing filters or servicing the unit.
1. The OM550DD may be equipped with an optional
Minihelic Gauge, which may be used to indicate when filter
needs to be replaced.
2. Initially, the Minihelic Gauge will register a very small
pressure drop across the filters (change in pressure varies
with filter combination used). After continued operation,
airflow will be reduced and the Minihelic Gauge will
measure increased pressure.
NOTE
: Record pressure reading for future reference.
3. Minihelic Gauge will measure increased pressure.
4. When the gauge reads high differential pressure, turn the
unit off and remove the impinger pre-filter form the unit.
Wash the pre-filter in a detergent solution to remove dirt
and oil residue.
5. Rinse the pre-filter thoroughly with water, shake dry and
replace it into the with airflow direction pointing to the
blower.
6. Turn on the unit. If gauge continues to read high,
differential pressure, after replacing the pre-filter, then the
pleated oil filter may also need to be replaced.
7. Visually inspect the pleated oil filter. IF the pockets are
loaded with oil and dirt, then remove the filter from the unit
and insert a new filter.
8. Start the unit. The gauge should read low differential
pressure, and the unit operating properly.
GENERAL MAINTENANCE
1. Occasionally check the condition of the door seals for any
leaks. Replace if necessary.
2. Check the blower bearings for unusual wear and the
blower wheel for debris and dirt. Clean when necessary.
3. Check the wiring for loose connections or cracked
insulation.
4. No lubrication is required for the motor because it is a
permanent pre-lube design. Excessive dirt/oil should be
periodically removed.
5. Make sure that oil is draining easily through drain pipe.
TROUBLESHOOTING CHART
CAUTION: Before disassembling the unit or doing any inspection of the parts, make certain that the power has been cut off
and the blower has come to a complete stop. Never run the unit with the access door open or removed.
PROBLEM POSSIBLE CAUSE REMEDY
Unit fails to start Dead power line Check the circuit and switch
Blown fuse Replace fuse
Loose wire in terminal box Reconnect wire
Burned out motor Replace motor
Unit runs slowly Wired for wrong voltage Check input voltage
Inadequate capture Improper rotation Check wiring diagram
Dirty filters Service filters
(see Changing Filters Section)
Obstruction in hose/arm Reach into hood and remove obstruction
Vibration Loose mounting bolts Tighten bolts
Foreign objects in blower Remove access door and remove objects
Dirty disposable filters Service filters
Obstructions in hose/arm assembly Reach into hood and remove obstruction
Summary of Contents for OM550DD
Page 5: ...5 FIG 5 ...