Crane Barnes 3SE-L Series, Инструкция по установке и эксплуатации

Страница: 9 / 27

9
SECTION E: PREVENTATIVE MAINTENANCE
As the motor is oil filled, no lubrication or other maintenance
is required, and generally CP&S pumps 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) Inspect seal for wear on leakage and repair as required
per section F-3.
SECTION F: SERVICE AND REPAIR
NOTE: All item numbers in ( ) refer to Figures 11 & 12,
3450RPM and Figures 13 & 14 , 1750RPM.
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 pipe
plug (5) from motor housing (2). With a flashlight, visually
inspect the oil in the motor housing (2) 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 a
vertical position.
F-1.2) Testing Oil:
1. Place pump on it’s side, remove pipe plug (5) 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), refill 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 (46), cord
assemblies (10) and (11, if used), square ring (42) and
pipe plugs (5) before refilling with oil.. To locate the leak,
perform a pressure test as per section F-1.4. After leak is
repaired, refill with new oil as per section F-1.3.
F-1.3) Replacing Oil:
Motor Housing -
Set unit upright and refill with new cooling
oil as per Table 1 (see parts list for amount). Fill to just above
motor as an air space must remain in the top of the motor
housing (2) to compensate for oil expansion (see Figures 2,
11, or 13). Apply thread locking compound to each pipe plug
(5) then assemble to motor housing (2).
TABLE 1 - COOLING OIL - Dielectric
SUPPLIER GRADE
Sohio / Standard SE 40, Energol HL22 or HL32
Shell Turbo Oil 32
Texaco Rando HD32, 522
Sun Petroleum Supar 110, Sunvis 816WR, 911 or 916
Mobile D.T.E. Oil Light or Rubrex 200
G&G Circu Oil 22
Allegheny Petroleum Altrapar 22
Woco Premium 100
Important! - Do not overfill oil. Overfilling
of motor housing with oil can create
excessive and dangerous hydraulic
pressure which can destroy the pump
and create a hazard. Overfilling oil voids
warranty.
F-1.4) Pressure Test:
Pumps that have had oil drained from the Motor Housing
- 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 five minutes,
the pressure is still holding constant, 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 and
repaired.
Pumps that have had oil drained from the Motor Housing
- The pressure test may not be done with the oil at its normal
level. Remove pipe plug (5) from motor housing (2). Apply
pipe sealant to pressure gauge assembly and tighten into
hole (see Figure 2). Pressurize motor housing to 10 P.S.I.
Use soap solution around the sealed areas above the oil level
and inspect joints for “air bubbles”. For sealed areas below
the oil level, leaks will seep oil.
If, after five minutes, the pressure is still holding constant,
and no “bubbles” / oil seepage is observed, slowly bleed the
pressure and remove the gauge assembly. If the pressure
does not hold, then the leak must be located and repaired.
FIGURE 2