9
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
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
F-2) Impeller and Volute Service:
F-2.1) Disassembly and Inspection:
To clean out volute (26), disconnect power, remove hex nuts
(20), and lock washers (19), vertically lift motor and seal
assembly from volute (26). Clean out volute if necessary.
Clean and examine impeller (28), for pitting or wear, replace
if required, inspect Square Ring (42) and replace if cut or
damaged. If the impeller (28) requires replacing, remove
hex nut (34) and washer (35). The impeller is keyed onto
the shaft with a square key (33) and to remove, pull impeller
straight off the shaft using a wheel puller, if required. Before
reinstalling, check the motor shaft and impeller bore for
damage.
F-2.2) Reassembly:
To install impeller (28), apply a thin film of oil to motor shaft and
slide impeller straight onto shaft, keeping keyways lined up.
Drive key (33) into keyway. Locate washer (35), apply thread
locking compound to shaft threads, thread hex nut (34) to shaft
and torque to 40 ft. lbs. Rotate impeller to check for binding.
Position square ring (42) on volute flange and install impeller
and motor housing over studs and onto volute (26). Apply
thread locking compound to threads of each stud (24), install
lock washer (19) and thread nuts (20) onto stud (24). Torque to
20 ft. lbs. Check for free rotations of motor and impeller.
F-3) Motor and Bearing Service:
F-3.1) Disassembly and Inspection:
To examine or replace the motor (1), capacitor (3, single
phase units), and bearing (47), drain oil from motor as
outlined in paragraph F-1.2. Disassemble volute and impeller
as outlined in paragraph F-2.1 and disassemble shaft seal
as outlined in paragraph F-4.1. Position unit upright, using
blocks to avoid resting unit on shaft. Unscrew cord hex bolts
(6) and remove compression flange (52a) and power cord
(52). Remove snap ring (54) with a flat head screwdriver.
Pull the terminal block (56) out of the housing (2) using a
T-bolt or pair of pliers and a .25-20 screw in the threads of
the terminal block (56). Be sure to leave slack on the motor
leads connected underneath. Use needle nose pliers to pull
each female connector off of the pins on the underside of the
terminal block (56) (see Figure 5). The unit voltage should be
noted. Repeat cord and terminal block removal procedure for
any sensor cords (53). Remove socket head cap screws (51).
Vertically lift motor housing (2) from bearing bracket (21) by
lifting handle (7). Inspect square ring (42) for damage or cuts.
Remove the motor bolts and lift motor stator from bearing
bracket (21). Disconnect capacitor leads from capacitor (3, 1
phase units). Examine bearing (47) and replace if required.
If replacement is required, remove bearing (47) from motor
shaft using a wheel puller or arbor press, see Figure 4.
Check motor capacitor (3, 1 phase units) with an Ohm meter
by first grounding the capacitor by placing a screwdriver
across both terminals and then removing screwdriver.
Connect Ohm meter (set on high scale) to terminals. If needle
moves to infinity (∞) then drifts back, the capacitor is good.
If needle does not move or moves to infinity (∞) and does
not drift back, replace capacitor (3). To test the temperature
sensor (P1/P2), check for continuity between the wire leads
(see Figure 11). If found to be defective, contact a motor
service station or CP&S Pumps Service department. Inspect
motor winding for shorts and check resistance values. Check
rotor for wear. If rotor or the stator windings are defective,
the complete motor must be replaced. While disassembled,
check moisture sensor wires (16) (if equipped), that they are
secured to electrodes (18) with screws (14).
FIGURE 3
FIGURE 4
