Crane BARNES STEP-DS Series, Installation And Operation Manual

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In the event of a moisture detect, check the individual moisture
sensor probe leads for continuity, (∞ resistance = no moisture)
and the junction box/control box for moisture content. The
above situations may induce a false signal in the moisture
detecting circuit. If none of the above tests prove conclusive,
the pump(s) should be pulled and the source of the failure
identified and repaired. IF A MOISTURE DETECT HAS
OCCURRED SCHEDULE MAINTENANCE AS SOON AS
POSSIBLE.
C-4.4) Wire Size:
Consult a qualified electrician for proper wire size if additional
power cord length is required. See table on pages 8 and 9 for
electrical information.
SECTION: D START-UP OPERATION
D-1) Check Voltage and Phase:
Before operating pump, compare the voltage and phase
information stamped on the pump identification plate to the
available power.
D-2) Check Pump Rotation:
Before putting pump into service for the first time, the motor
rotation must be checked. Improper motor rotation can result
in poor pump performance and can damage the motor and/
or pump. To check the rotation, suspend the pump freely,
momentarily apply power and observe the “kickback”.
“Kickback” should always be in a counter-clockwise direction
as viewed from the top of the pump motor housing.
D-2.1) Incorrect Rotation for Three-Phase Pumps:
In the event that the rotation is incorrect for a three-phase
installation, interchange any two power cord leads at the
control box. DO NOT change leads in the cord housing in the
motor. Recheck the “kickback” rotation again by momentarily
applying power.
D-2.2) Incorrect Rotation for Single-Phase Pumps:
In the unlikely event that the rotation is incorrect for a single
phase pump, contact a Barnes Pumps Service Center.
D-3) Identification Plate:
Record future serial plate information in the “NOTES” section.
D-3.1) Pump-Down Test:
After the pump has been properly wired and lowered into the basin,
sump or lift station, it is advisable to check the system by filling
with liquid and allowing the pump to operate through its pumping
cycle. The time needed to empty the system, or pump-down time
along with the volume of water, should be recorded on the start-up
report.
SECTION E: PREVENTATIVE MAINTENANCE
As the motor is oil filled, no lubrication or other maintenance
is required, and generally will give very reliable service and
can be expected to operate for years on normal sewage
pumping without failing. In our experience attempts at
preventative maintenance are more likely to reduce, rather
than extend the life of our pumps. However, if you are inclined
to perform preventative maintenance, the following are the
steps that should be performed.
t
1) Inspect motor chamber for oil level and contamination
and repair as required per section F-1.
2) Inspect impeller and body for excessive build-up or
clogging and repair as required per section F-2.
3) Inspect motor and bearings and replace as required
per section F-3.
4) Inspect seal for wear or leakage and repair as required
per section F-4.
SECTION F: SERVICE AND REPAIR
NOTE: All item numbers in ( ) refer to Figures 17 through 20.
CAUTION ! - Operating pump builds up heat and
pressure; allow time for pump to cool to room
temperature before handling or servicing. Slowly
remove pipe plug prior to servicing as housing
may be pressurized.
F-1) Lubrication:
Anytime the pump is removed from operation, the cooling oil
in the motor housing (6) should be checked visually for oil
level and contamination.
F-1.1) Checking Oil:
Motor Housing -
To check oil, set unit upright. Remove pipe
plug (39) from motor housing (6). With a flashlight, visually
inspect the oil in the motor housing (6) to make sure it is
clean and clear, light amber in color and free from suspended
particles. Milky white oil indicates the presence of water. Oil
level should be just above the motor when pump is in vertical
position.
F-1.2) Testing Oil:
1.) Place pump on it’s side, remove pipe plug (39), from
motor housing (6) and drain oil into a clean, dry
container.
2.) Check oil for contamination using an oil tester with a
range to 30 Kilovolts breakdown.
3.) If oil is found to be clean and uncontaminated
(measuring above 15 KV. breakdown), refill the motor
housing as per section F-1.4.
4.) If oil is found to be dirty or contaminated (or measures
below 15 KV. breakdown), the pump must be
carefully inspected for leaks at the shaft seal (28), cable
assemblies (16) and (56 if used), square ring (27) and
pipe plug (39), before refilling with oil. To locate the leak,
perform a pressure test as per section F-1.3.
After leak is repaired, dispose of old oil properly, and
refill with new oil as per section F-1.4.