10
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 oil as described
in section F-1.4. If the pressure does not hold, then the leak
must be located and repaired.
Pumps that have NOT had the oil drained from the Motor
Housing-
The pressure test may be done with the oil at its
normal level. Remove pipe plug (39) from motor housing (6).
Apply pipe sealant to pressure gauge assembly and tighten
into hole (see Figure 3). 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.
Seal Chamber (DS Units Only) -
Set unit on its side with
fill plug (44) downward, remove plug (44) and drain all oil
from seal chamber. Apply pipe sealant to pressure gauge
assembly and tighten into hole in outer seal plate (29).
Pressurize seal chamber to 10 P.S.I. and check for leaks as
outlined above.
CAUTION ! - Pressure builds up extremely
fast, increase pressure by “TAPPING” air
nozzle. Too much pressure will damage
seal. DO NOT exceed 10 P.S.I.
F-1.4) 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 to compensate for oil expansion (see Figures 15 or
17). Apply pipe thread compound to threads of pipe plug (39)
then assemble to motor housing (6).
IMPORTANT! - For single phase units, oil level
should be below capacitor.
Seal Chamber (DS Units Only) -
Set unit on its side, with
plug (44) upward, and refill with new oil as per Table 1 (see
parts list for amount). Apply pipe thread compound to threads
of pipe plug (44) and assemble to outer seal plate (29).
WARNING ! - 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.
TABLE 1 - COOLING OIL - Dielectric
SUPPLIER
GRADE
BP
Enerpar SE100
Conoco
Pale Paraffin 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-2) Impeller and Volute Service:
F-2.1) Disassembly and Inspection:
To clean out volute (1) or replace impeller (33), disconnect
power, remove hex bolts (26), and lockwasher (12), vertically
lift motor and seal plate assembly from volute (1), see Figure 4.
Clean out body if necessary. Clean and examine impeller (33),
for pitting, wear, cracks or breakage and replace if required,
inspect square ring (36) and replace if cut or damaged. If the
impeller (33) needs replacing, place a flat screwdriver in the
slot of the end of the shaft to hold the shaft stationary while
unscrewing the jam nut (66) if applicable and impeller (33).
F-2.2) Reassembly:
To install impeller (33), clean the threads with thread
locking compound cleaner. Apply removable Loctite® 603
or equivalent to shaft threads. Screw impeller onto the shaft
hand tight while using a screwdriver in the slot at the end of
the shaft to hold it stationary. Apply thread locking compound
(67) to shaft threads. Then install jam nut (66) if applicable
and torque to 40 ft. lbs. It is important that the spring of the
lower shaft seal (28) seats in the hub of the impeller (33).
Rotate impeller to check for binding. Position square ring (36)
on volute and position impeller and motor housing on volute
(1). Position lockwasher (12) on cap screw (26) and screw
into volute (1). Torque to 100 in-lbs. Check for free rotation of
motor and impeller.
F-3) Shaft Seal Service:
CAUTION ! - Handle seal parts with extreme care.
DO NOT scratch or mar lapped surfaces.
F-3.1) Disassembly and Inspection:
Outer Seal (All Units)-
To expose shaft seal (28) for
examination, disassemble volute and impeller as outlined in
paragraph F-2.1. If further repair is required, remove retaining
ring (28d), spring (28c) and rotating member (28b) from shaft
(see Figures 5 & 6). Examine all seal parts and especially
contact faces. Inspect seal for signs of wear such as uneven
wear pattern on stationary members, chips and scratches
on either seal face. DO NOT interchange seal components,
replace the entire shaft seal (28). If replacing seal, remove
stationary (28a) by prying out with flat screwdriver.
FIGURE 5
Summary of Contents for Barnes DS Series
Page 15: ...15 FIGURE 15 CONTIUED ...
Page 17: ...17 FIGURE 16 EH L Series Single Seal ...
Page 18: ...18 FIGURE 17 EH L Series Single Seal Used with Cast Iron Impeller 33 ...
Page 19: ...19 FIGURE 18 EH DS Series Double Seal ...
Page 20: ...20 FIGURE 19 EH DS Series Double Seal 66 USED WITH CAST IRON IMPELLER 33 ...
Page 23: ...23 Notes ...
Page 24: ...24 Notes ...
