Roberts Gorden EP 200 Series, Руководство по установке и эксплуатации

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EP-200 S
ERIES
P
UMP
I
NSTALLATION
, O
PERATION AND
S
ERVICE
M
ANUAL
16
SECTION 8: SERVICING INSTRUCTIONS
Disassembly and removal or replacement of any
pump components must be done by a service con-
tractor or electrician qualified in the installation and
service of gas-fired heating equipment.
Overtorquing can result in a failure of components.
Failure to follow these instructions can compromise
pump operation and void warranty.
8.1 Pre-Season Maintenance and Annual
Inspection
To ensure your safety and years of trouble-free oper-
ation of the pump, service and annual inspections
must be done by a contractor qualified in the installa-
tion and service of gas-fired heating equipment.
Disconnect electric and gas supplies before perform-
ing service or maintenance.
Before every heating season, a contractor qualified
in the installation and service of gas-fired heating
equipment must perform a thorough safety inspec-
tion of the pump.
For safety and best performance, the electrical, vent-
ing, suspensions and overall pump condition are
some of the areas requiring inspection.
Please
see Page 17, Section 8.3
for suggested items
to inspect.
8.2 To Change the Motor and/or the Impeller
1. To remove the motor or impeller, the scroll must
be opened. Remove the (8) nuts/bolts and insert
a knife blade between the scroll halves to cut
through the factory applied sealant. Separate
the two halves.
2. The impeller can be removed by loosening the
(2) 3/8-24 set screws, removing the 10-32 screw
and retainer assembly. With an appropriate
wheel puller, remove the impeller.
3. The motor can now be removed, if necessary,
by loosening the attachment hardware.
4. Re-assembly of motor/impeller combination
require proper alignment. Make sure the impel-
ler has a 1/4" (6 mm) clearance off the inside
wall of the scroll. Verify proper motor alignment
and free rotation.
5. The (2) impeller set screws should be removed
and reinstalled with a drop of thread locking
sealant and remain unseated during initial re-
assembly.
6. Slide the impeller onto the motor shaft end.
Apply a drop of thread locking sealant to the
threads of the retainer screw/washer assembly.
Insert the retainer screw into the shaft so that it
bottoms on the end of the shaft and hub of the
impeller. Torque to 30 in/lb.
7. Seat the (2) impeller set screws. Torque to 100
in/lbs.
8. Re-attach the scroll halves. Apply a bead of high
temperature silicone sealant (600°F) to the
scroll halves. Secure with all (7) nuts/bolts.
Torque to 150 in/lb.
WARNING
S evere Injury H a z ard
Install pump scroll and inlet assembly before operating
high speed rotating impeller.
K eep hands, fingers and clothing a w ay from inlet and
outlet.
Install and operate equipment according to installation
manual.
F ailure to follo w these instructions can result in death
or severe injury.
WARNING
E lectrical S hoc k H a z ard
D isconnect electrical po w er and gas supply before
servicing.
T his appliance must be connected
to a properly grounded electrical source.
F ailure to follo w these instructions can result in
death or electrical shoc k .