Pentair MNG3SC, Руководство по установке и эксплуатации, Страница: 9 / 20

9
MY12715 (07-15-22)
ADJUST CUTTER CLEARANCE ON CHOPPING MECHANISM
CUTTING RISK. Risk of serious cutting
or amputation exists. Use caution as liner plate is extremely
sharp. Always keep fingers and hands away from cutting
profiles. Disconnect all power sources prior to servicing pump.
Pump may start without warning.
1. First install the liner plate with chopper bar (Item A) into the
volute. It may be helpful to install 3/8-16 studs into the liner
plate to line up the holes with the corresponding volute
holes. You may have to tap the plate all the way down with a
rubber hammer.
2. Remove the studs and replace with four 3/8-16 bolts (Item
B) in the large counterbored holes from beneath the volute,
only thread in enough to hold screws in place.
3. Install motor with impeller mounted, tighten motor housing
bolts to volute.
4. Tighten four 3/8-16 (Item C) socket head cap screws in the
chamfered counterbored holes until liner plate is sitting
flat against impeller, ensure (Item B) is still loose which
allows the liner plate to rest against the impeller.
5. Next back off the same 3/8-16 (Item C) screws away from
liner plate 1/8 - 1/4 turn for the recommended .008-.015
clearance.
6. Tighten the opposite four 3/8-16 (Item B) screws evenly
to 25-30 Ft-lbs. Ensure all screws have proper torque
to prevent backing out. A thread locking compound is
recommended to prevent vibrational loosening over time.
7. Measure the clearance with a feeler gauge it should be
between .008 to .015.
8. Spin impeller with a hex wrench in the impeller hub or use
a wooden pry bar to spin impeller to make sure there is no
rub.
9. If you hear or feel a rub, readjust the clearance by loosening
screws (Item C) evenly and retightening (Item B) screws.
OPERATIONS & MAINTENANCE
A
A
A
B
C
.008-.015 RECOMMENDED GAP
LINER
3/8-16 JACK BOLTS
3/8-16 LINER BOLTS
IMPELLER
1 OF 1
SHEET
1-13-22
SCALE
DR.
MATERIAL:
--
1:1
S. TUCKER
DATE
All drawings and specifications as well as processes,
materials, compounds and other similar criteria are to be
strictly adhered to. No modifications allowed without
engineering approval.
CONFIDENTIAL contains trade secrets and
other proprietary information of Pentair
Water. Duplication, disclosure or use are
forbidden without the written consent of
Pentair Water. ASHLAND, OH. USA
FILE NAME
AH154747004
USED IN LITERATURE
AH154747004
DATE
REV.
DO NOT SCALE DRAWING
ANGULAR ½
TOLERANCE EXCEPT AS NOTED
THIRD ANGLE PROJECTION
125 [3.2]
.005 [.13]
[.XX]
.XXX
.010 [.25]
[.X]
.XX
.030 [.76]
[X.]
.X
DESIGNED IN INCHES
[XXX] DIMENSIONS IN mm
AH154747004
1 OF 1
INIT
DESCRIPTION
PCO/REL
CIRCLED DIMENSIONS ARE
CRITICAL DIMENSIONS THAT NEED
TO BE INSPECTED.
WET END ADJUSTMENT
PCO RELEASED FOR LITERATURE ST A 1-13-22