F-1.2) Testing Oil:
1.
Place pump on it’s side, remove pipe plug (2) or (36), from
motor housing (3) 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 (9),Gland Nut (28b)
and (39b if equipped), O-rings (24), pipe plugs (2) or (36)
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-
Drain all oil from motor housing and dispose
of properly. Refill 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-section Fig. 9). Set unit upright and fill 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 (2) or (36) and install in motor housing (3).
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.
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 (2) or
(36) from motor housing (3). Apply pipe sealant to pressure
gauge assembly and tighten into pipe plug hole (see Fig. 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.
CAUTION !
ALWAYS WEAR EYE PROTECTION WHEN WORKING
ON PUMPS.
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.
TABLE 1 - COOLING OIL - Dielectric
SUPPLIER
GRADE
BP
Enerpar SE100
Conoco
Pale Paraffin 22
Mobil
D.T.E. Oil Light
G & G Oil
Circulating 22
Imperial Oil
Voltesso-35
Shell Canada
Transformer-10
Texaco
Diala-Oil-AX
F-2) Impeller, Volute and Exclusion Seal Service:
F-2.1) Disassembly and Inspection:
To clean out volute (10), or replace u-cup (20) on "H" series
pumps, disconnect power, remove cap screws (11) and
lockwashers (12), vertically lift motor and seal assembly from
body (10). Clean out body if necessary. Inspect gasket (13)
and replace if cut or damaged. Clean and examine impeller
(16) for pitting, wear, cracks or breakage, replace if required.
Check u-cup (20) on "H" series pumps, for damage, if u-cup
(20) needs replacement, cut the u-cup from volute (10) and
clean surface of bore.
Pressure Gauge Ass’y
(See Parts List)
Fig. 2
Remove Plug
10 PSI AIR
⇒
9
