SECTION 10: S
ERVICING
I
NSTRUCTIONS
25 of 29
6. Detach motor, if necessary, by remo
v
ing
attachment hard
w
are.
7. Re-assembly of motor/impeller combination
req
u
ires proper alignment. Make s
u
re impeller
has a 1/4" (6 mm) clearance off inside
w
all of
scroll. Be certain of proper motor alignment and
free rotation.
8. T
w
o impeller set scre
w
s sho
u
ld be reinstalled
w
ith a drop of thread locking sealant and remain
u
nseated d
u
ring initial re-assembly.
9. Slide impeller onto motor shaft end.
10.Seat t
w
o impeller set scre
w
s. Torq
u
e to 100
in/lbs.
11. Re-attach scroll and inlet. Sec
u
re
w
ith all six
n
u
ts. Torq
u
e to 150 in/lbs.
10.3 Maintenance Checklist
Installation Code and Annual Inspections:
All installation and ser
v
ice of ROBERTS GORDON
®
eq
u
ipment m
u
st be performed by a contractor
q
u
alified in the installation and ser
v
ice of eq
u
ipment
sold and s
u
pplied by Roberts-Gordon LLC and
conform to all req
u
irements set forth in the
ROBERTS GORDON
®
man
u
als and all applicable
go
v
ernmental a
u
thorities pertaining to the
installation, ser
v
ice,
operation and labeling of the eq
u
ipment.To help
facilitate optim
u
m performance and safety, Roberts-
Gordon LLC recommends that a q
u
alified contractor
cond
u
ct, at a minim
u
m, ann
u
al inspections of yo
u
r
ROBERTS GORDON
®
eq
u
ipment and perform
ser
v
ice
w
here necessary,
u
sing only replacement
parts sold and s
u
pplied by Roberts-Gordon LLC.
System Tubin
g
and
Vent Pipe
Venting m
u
st be intact. Using a flashlight, look for obstr
u
ctions, cracks on
pipe, gaps in sealed areas or corrosion.
Area m
u
st be free of dirt and d
u
st or blockage.
Remo
v
e any carbon deposits or scale
u
sing a
w
ire br
u
sh.
Replace pipe if there are any holes d
u
e to corrosion. Seal any gaps in
v
enting
to pre
v
ent condensate leakage.
Pump Scroll, Impeller and
Motor
Compressed air or a
v
ac
uu
m cleaner may be
u
sed to clean d
u
st and dirt.
Check for corrosion, if any parts ha
v
e corroded thro
u
gh, replace as neces-
sary.
Ens
u
re all hex n
u
ts are tight for proper seal.
Suspension Points
Make s
u
re p
u
mp is hanging sec
u
rely.
Look for signs of
w
ear on mo
u
nting angles,
w
all mo
u
nting points or ceiling
mo
u
nting points.
Pump Boot
Inspect p
u
mp boot at p
u
mp inlet and o
u
tlet for cracking or deterioration.
Replace if cracks are fo
u
nd.
Ens
u
re band clamps are tight at all connection points.
Condensate Trap, Drain
Cap
Check connection of tee to drain cap and bet
w
een tee and condensate trap.
Seal connections bet
w
een tee and drain cap to pre
v
ent condensate leakage.
Scre
w
condensate trap tightly into drain cap to pre
v
ent leakage.
Condensate trap sho
u
ld be filled
w
ith
w
ater.
Pressure Switch
Ens
u
re that
w
iring is intact. Check silicone hose for cracks.
Ens
u
re sec
u
re connection bet
w
een press
u
re s
w
itch and barbed fitting.
Safety Labels
Prod
u
ct safety signs or labels sho
u
ld be replaced by the prod
u
ct
u
ser
w
hen
they are no longer legible. Please contact Roberts-Gordon LLC or yo
u
r
ROBERTS GORDON
®
independent distrib
u
tor to obtain replacement signs or
labels.
See Page 2, Figure 1
.
