SECTION 10: S
ERVICING
I
NSTRUCTIONS
21 of 27
SECTION 10: SERVICING INSTRUCTIONS
Disassembly and remo
v
al or replacement of any
p
u
mp components m
u
st be done by a ser
v
ice con-
tractor or electrician q
u
alified in the installation and
ser
v
ice of gas-fired heating eq
u
ipment.
O
v
ertorq
u
ing can res
u
lt in a fail
u
re of components.
Fail
u
re to follo
w
these instr
u
ctions can compromise
p
u
mp operation and
v
oid
w
arranty.
10.1 Pre-Season Maintenance and Annual
Inspection
To ens
u
re yo
u
r safety and years of tro
u
ble-free oper-
ation of the p
u
mp, ser
v
ice and ann
u
al inspections
m
u
st be done by a contractor q
u
alified in the installa-
tion and ser
v
ice of gas-fired heating eq
u
ipment.
Disconnect electric and gas s
u
pplies before perform-
ing ser
v
ice or maintenance.
Before e
v
ery heating season, a contractor q
u
alified in
the installation and ser
v
ice of gas-fired heating
eq
u
ipment m
u
st perform a thoro
u
gh safety inspec-
tion of the p
u
mp.
For safety and best performance, the electrical,
v
ent-
ing, s
u
spensions and o
v
erall p
u
mp condition are
some of the areas req
u
iring inspection.
Please
see Page 23, Section 10.3
for s
u
ggested
items to inspect.
10.2 To Chan
g
e the Motor and/or the Impeller
1. Diconnect electrical before ser
v
icing.
2. To remo
v
e the motor or impeller, the scroll m
u
st
be opened. Remo
v
e the eight n
u
ts/bolts and
insert a knife blade bet
w
een the scroll hal
v
es to
c
u
t thro
u
gh the factory applied sealant. Sepa-
rate the t
w
o hal
v
es.
3. The impeller can be remo
v
ed by loosening the
t
w
o 3/8-24 set scre
w
s, remo
v
ing the 10-32
scre
w
and retainer assembly. With an appropri-
ate
w
heel p
u
ller, remo
v
e the impeller.
Cut/Pinch Hazard
Wear protective gear
during installation,
operation and service.
Edges are sharp.
WARNING
Failure to follow these instructions can result in death, electric shock, injury or property damage.
Burn Hazard
Allow heater and
pump to cool before
service.
Tubing may still be hot
after operation.
Explosion Hazard
Turn off gas supply to
heater before service.
DANGER
Electrical Shock Hazard
Disconnect electric
before service.
Heater and pump must
be connected to a
properly grounded
electrical source.
Summary of Contents for EP 201
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