Crane PROSSER 4NX07 Series, Installation And Operation Manual

8

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 Prosser Service Center.

D-3) Start-Up Report:

Included at the end of this manual is a start-up report sheet, 
this sheet is to be completed as applicable. Return one copy 
to Barnes and store the second in the control panel or with 
the pump manual if no control panel is used. It is important to 
record this data at initial start-up since it will be useful to refer 
to should servicing the pump be required in the future.

D-3.1) Identifi cation Plate:

Record the numbers from the pump identifi cation plate on 
both START-UP REPORTS provided at the end of the manual 
for future reference.

D-3.2) Insulation Test:

Before the pump is put into service, an insulation (megger) 
test should be performed on the motor. The resistance values 
(ohms) as well as the voltage (volts) and current (amps) 
should be recorded on the start-up report.

D-3.3) 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 fi lling 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 fi lled, 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. However as with any mechanical 
piece of equipment a preventive maintenance program is 
recommended and suggested to include the following checks:

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, bearings and shaft seal for wear or
 

leakage, replace as required per section F-3.

4)  Before stopping operation, be sure to keep pumping
 

supernatent water or clean water for a period of time 

to fl ush out accumulated substances from pump.

SECTION F: SERVICE AND REPAIR
NOTE:

 All item numbers in ( ) refer to Figures 8, 9 & 10.

F-1) Lubrication:

Anytime the pump is removed from operation, the cooling oil 
in the motor housing (11) 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 (41) on SED series, or Pressure valve (42) on SEDH 
series, from motor housing (11) With a fl ashlight, visually 
inspect the oil in the motor housing (11) to make sure it is 
clean, clear, light amber in color and free from suspended 
particles. Milky white oil indicates the presence of water. Oil 
level should be to the midpoint of capacitor (18) on single 
phase units and above motor on three phase units, see Fig. 8 
or 9, when pump is in vertical position.

F-1.2) Testing Oil:

1.  Place pump on it’s side, remove pipe plug (41) or (42),
 

from motor housing (11) 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 (measure
 

above 15 KV. breakdown), refi ll the motor housing as per

 section 

F-1.3.

4.  If oil is found to be dirty or contaminated (or measures
 

below 15 KV. breakdown), the the pump must be carefully

inspected for leaks at the shaft seal (1), Gland Nut (12b),

O-rings (23), pipe plug (41) or pressure valve (42) before

 refi lling with oil. To locate the leak, perform a pressure 
 

test as per section F-1.4. After leak is repaired, refi ll with 

new oil as per section F-1.3.

TABLE 1 - COOLING OIL - Dielectric

SUPPLIER

GRADE

BP

Enerpar SE100

Conoco

Pale Paraffi n 22

Mobile

D.T.E. Oil Light

G & G Oil

Circulating 22

Imperial Oil

Voltesso-35

Shell Canada

Transformer-10

Texaco

Diala-Oil-AX

Woco

Premium 100

F-1.3) Replacing Oil:

Motor Housing- Drain all oil from motor housing and dispose 
of properly. Refi ll with (see parts list for amount) new cooling 
oil as per Table 1. An air space must remain in the top of 
the motor housing to compensate for oil expansion (see 
Cross-sections Fig. 8 or 9). Set unit upright and fi ll only 
until the motor, as viewed through the pipe plug opening, is 
just covered and no more. Apply pipe thread compound to 
threads of pipe plug (41) or pressure valve (42) and install in 
motor housing (11).

WARNING ! - DO NOT overfi ll oil. 
Overfi lling of motor housing with oil can 
create excessive and dangerous hydraulic 
pressure which can destroy the pump 

and create a hazard. Overfi lling oil voids 
warranty.

F-1.4) Pressure Test:
Motor Housing 

- Before checking the pump for leaks around 

the shaft seal, square rings, and cord inlet, the oil level should 
be full as described in section F-1.3. Remove pipe plug (41) 
or pressure valve (42) from motor housing (11). 

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