21
Installation, Operations & Maintenance Manual
6. On mRoy
®
A and B ECCs use a 3/16 punch and
push out spring pin (
Figure 16 and 17
, item 920)
holding drive shaft (910). Remove drive shaft.
Retain drive shaft and spring pin. Parts will be
used during installation of new motor.
7. Remove PCB (Paragraph 4.4.1, Steps 4-6).
8. Loosen two screws for feedback potentiometer
and slide potentiometer away from worm
gear.
9. Note placement of wiring to J1 for identical
placement during installation of new motor.
Remove two cable ties from connector J1
wiring.
10. Carefully remove two screws (
Figure 15
,
item 140) from adapter plate (60) and remove
adapter plate from motor.
11. Remove motor wires from J1.
12. Remove four mounting screws (50) from
bottom of base (10) and remove motor.
4.7.2. Installation of Motor
1. Mount motor to base (10) and secure with four
mounting screws (50).
2. Connect motor wires to J1.
3. Remove worm gear (190) from old motor.
Carefully remove spring pin (200) with 3/32
punch without damage to worm gear (190).
4. Slide worm gear (190) over new motor shaft and
align shaft holes to gear holes. Being careful
not to damage nylon worm gear, press spring
pin (200) through holes in gear and shaft with
3/32 punch. Place pin equal distance from both
sides of gear.
5. Attach adapter plate (60) to motor and secure
with two screws (140). One screw (140) also
mounts capacitor (65) to adapter plate.
6. Apply a very small amount of lithium grease
(if needed) to motor shaft nylon worm gear.
Motor shaft may have grease from previous
maintenance.
7. R e p o s i t i o n f e e d b a c k p o t e n t i o m e t e r
(Paragraph 4.5.2, Steps 1 & 2).
8. Position wiring to J1 as noted previously and
attach two cable ties.
9. Install PCB (Paragraph 4.4.2, Steps 1 and 2).
10. On mRoy
®
A and B ECCs slide drive shaft
(
Figure 16 and 17
, item 910) over bottom
of motor shaft and align mounting holes.
Press spring pin (920) through both holes with
3/16 punch. Place pin equal distance from both
sides of gear.
11. Slide gear removed previously from bottom
of motor shaft over new motor shaft.
Align shaft holes to gear holes. Being careful
not to damage gear, press spring pin through
holes in gear and shaft with 1/8 punch.
Place pin equal distance from both sides of
gear.
12. Apply lithium grease to gear above and
mount gear box to ECC with four screws
(mRoy
®
A and B has no gear box).
13. Mount ECC to pump. Connect ECC to pump
bracket with four bolts/screws.
14. Connect power to ECC.
15. Perform calibration A.
SECTION 4 - MAINTENANCE
