Preventative Maintenance; Service And Repair - Barnes 3SE-HD Serie Manual De Instalación

SECTION E: PREVENTATIVE MAINTENANCE
As the motor is oil fi lled, no lubrication or other maintenance
is required, and generally Barnes pumps will give very reliable
service and can be expected to operate for years on normal
sewage pumping without failing. However as with any mechani-
cal 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.
SECTION F: SERVICE AND REPAIR
NOTE: All item numbers in ( ) refer to Figures 9 & 10 .
F-1) Lubrication:
Anytime the pump is removed from operation the cooling oil in
the motor housing (2) must be checked visually for oil level and
contamination.
F-1.1) Checking Oil:
Motor Housing - To check oil, set unit upright. Remove cap
screws (6) and lockwashers (4), lift cord grip plate (9) from mo-
tor housing (2) but DO NOT disconnect from motor leads. With
a fl ashlight, visually inspect the oil in the motor housing (2) to
make sure it is clean, clear and that oil level is above all internal
componentry.
F-1.2) Testing Oil:
1. Place pump on it's side, remove cap screws (6) and
lockwashers (4), lift cord grip plate (9) from motor
housing (2) 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 (38), cord grip plate
(9), O-rings (10) and (36) pipe plug (5) 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.
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 Figure 9). Set
unit upright and fi ll only until the motor, as viewed through the
conduit box opening, is just covered and no more.
Reassemble the O-ring (10), cord grip plate (9) or optional con-
duit box (15), cap screws (6) and lockwashers (4), apply thread
locking compound (47) to each cap screw (6) thread before
installing. Torque cap screws (6) to 15 ft, lb.
TABLE 1 - COOLING OIL - Dielectric
SUPPLIER
BP
Conoco
Mobile
G & G Oil
Imperial Oil
Shell Canada
Texaco
Woco
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, o-rings, and cord inlet, the oil level should be
full as described in section F-1.3. Remove pipe plug (5) and
lifting handle (7) from motor housing (2). Apply pipe sealant to
pressure gauge assembly and tighten into pipe plug hole (see
Figure 2). Pressurize motor housing to 10 P.S.I. Use a soap
solution around the sealed areas and inspect joints for "air
bubbles". If, after fi ve minutes, the pressure is still holding con-
stant, and no "bubbles" are observed, slowly bleed the pressure
and remove the gauge assembly. Replace the pipe plug using
a sealant. If the pressure does not hold, then the leak must be
located.
Pressure Gauge Assembly
Remove Pipe
Plug
Remove Handle
FIGURE 2
7
GRADE
Enerpar SE100
Pale Paraffi n 22
D.T.E. Oil Light
Circulating 22
Voltesso-35
Transformer-10
Diala-Oil-AX
Premium 100
10 PSI
AIR
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