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SECTION F: SERVICE AND REPAIR
NOTE: All item numbers in ( ) refer to Figures 7, 8 and 9.
CAUTION ! - Before servicing and/or
removing pump from system, verify that the pip-
ing system has no pressure.
F-1) Lubrication:
Anytime the pump is removed from operation the cooling oil
in the motor housing (2) and seal chamber, 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), lift conduit box assembly (10) from motor housing
(2) but DO NOT disconnect conduit box wiring 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.
Seal Chamber - Place pump on its side with the square head
pipe plug (22) downward (180° from discharge on bearing
bracket (21), remove pipe plug (22) and drain oil from the
seal chamber. If the oil is found to contain considerable water
or other contamination or little oil drains out, the shaft seal
(46) and diaphragm (32) should be inspected and replaced if
required.
F-1.2) Testing Oil:
1.
Place pump on it's side, remove cap screws (6), lift
conduit box assembly (10) from motor housing (2) and
drain oil into a clean, dry container. In separate container
drain seal chamber by removing pipe plug (22).
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 and
seal chamber 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),
conduit box assembly (10), diaphragm (32), O-ring (42),
pipe plugs (22) and (45) and pressure valve (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 dis-
pose 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
Fig. 8). 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 (11), conduit box assembly (10)
and cap screws (6), apply thread locking compound to each
cap screw (6) thread before installing. Torque cap screws (6)
to 15 ft., lb.
Seal Chamber - Refi ll chamber completely full with new cool-
ing oil per Table 1 or reuse the uncontaminated oil. (See parts
list for amount.)
Important! - Do not overfi ll oil!
Overfi lling of motor housing with oil can cre-
ate excessive and dangerous hydraulic
pressure which can destroy the pump and
create a hazard. Overfi lling oil voids warranty.
TABLE 1 - COOLING OIL - Dielectric
SUPPLIER
BP
Conoco
Mobile
G & G Oil
Imperial Oil
Shell Canada
Texaco
Woco
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. in motor
housing & 20-25 P.S.I. in seal chamber.
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 pressure valve
(5) from motor housing (2). Apply pipe sealant to pressure
gauge assembly and tighten into pressure valve hole (See
Fig. 1). 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
constant, and no "bubbles" are observed, slowly bleed the
pressure and remove the gauge assembly. Replace the Pres-
sure valve using a sealant. If the pressure does not hold, then
the leak must be located.
Seal Chamber - Remove pipe plug (22) from Bearing Bracket
(21) and check that seal chamber is full of oil. Apply pipe
sealant to pressure gauge assembly and tighten into hole in
bearing bracket (21). Pressurize seal chamber to 20-25 PSI
and check for leaks as outlined above.
FIGURE 1
8
GRADE
Enerpar SE100
Pale Paraffi n 22
D.T.E. Oil Light
Circulating 22
Voltesso-35
Transformer-10
Diala-Oil-AX
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