M E T E R I N G P U M P S
B E A M O P E R A T E D P L U N G E R
LINC 82 ver. 04102003 - pn 15104
LINC
MILTON
ROY
201
IVYLAND
ROAD
IVYLAND
PA,
18974
USA
TEL.
215.441.0800
Page 6
body (fig. 3, item 1) and "peen"
the ball onto the seat to
ensure proper sealing.
6. Install the repaired suction
check valve into the pump
body. Tighten securely.
7. Reconnect the suction piping.
Discharge Check Valve,
Figure 1, item 15 & Figure 2:
1. Assure that the pump is
isolated from the rest of the
system.
2. Disconnect the piping from
the check valve.
3. Unscrew the check valve
body (fig. 2, item 1) from the
pump lower housing (fig. 1,
item 13).
4. Remove and discard the
o-rings (fig. 2, items 4 & 5).
5. Inspect the ball and spring
(fig. 2, items 2 & 3) for dam-
age. Replace if necessary.
Reassemble the check valve
using new o-rings. If the seat
o-ring is Teflon, install in into
the pump lower housing (fig.
1, item 13) and "peen" the
ball onto the seat to ensure
proper sealing.
6. Install the repaired discharge
check valve into the pump
lower housing. Place the ball
on the o-ring seat followed by
the spring (small end of the
spring toward the ball) and
screw the discharge check
valve body into the pump
lower housing. Tighten
securely.
7. Reconnect the discharge
piping.
Plunger and Plunger Seal,
Figure 1, item 6 & 16:
1. Assure that the pump is
isolated from the rest of the
system.
2. Remove the pin retainer and
pins separating the plunger
assembly from the beam (fig.
1, items 4 & 5). Remove the
retaining ring and loosen the
set screw and separate the
swivel ring (fig. 1, items 7, 9
& 8) from the packing block.
3. Grasp the plunger assembly
(fig. 1, item 6) and pull up out
of the packing block (fig. 1,
item 11) to remove. Inspect
the plunger for wear, espe-
cially longitudinal grooves.
Replace the plunger assembly
if necessary.
4. With a pipe or strap wrench
separate the packing block
(fig. 1, item 11) from the lower
housing (fig. 1, item 13).
5. Remove the plunger seal and
seal back-ups, where used,
from the lower housing (fig.
1, items 16 & 13). Carefully
remove the seal back-up and
seal. Inspect for wear or
deterioration from being
attacked by the chemical the
pump is pumping.
6. Replace the plunger seal and
plunger seal back-ups if
needed (see parts lists on
page 9). If the plunger seal
is the o-ring type, it should
be installed with a plunger
seal back-up on each side of
the o-ring. If the plunger seal
is of the Uniseal type, it
should be installed with the
expander ring down toward
the lower housing. Extreme
care should be taken not to
scratch or distort these parts.
7. After the seal has been
replaced, lubricate with a light
oil to protect against possible
damage during assembly.
8. Screw the packing block onto
the lower housing and tighten
securely. Slide the plunger
assembly into the packing
block and down into place.
Install the swivel ring with the
retaining ring and beam with
the pin and pin retainer. See
step 2 above under this sec-
tion.
9. If the bleed screw has been
removed, install and tighten
securely.
Plunger and Plunger Seal
Lubrication:
1. Remove the plug from the
pump body (fig. 1, item 10).
2. Add silicone base lubricant
(Dow Corning DC-7, part
#10354) or equal into the port
where the plug was removed.
Approximately 0.5cc will be
required for each refill.
Replace the plug.
Note:
Do not use a grease gun
or any metal tool to insert the lubri-
cant into the pump to prevent dam-
age to the plunger or plunger seal.
3. Silicone lubricant should be
added every 4 - 6 weeks
depending upon operation
conditions.
M E T E R I N G P U M P S
