Pentair Pool Products Hydromatic OSP50 User manual

Now Includes
OSP50AB
Parts List
Submersible Effluent Pumps
OSP50/OSP50AB
NOTE! To the installer: Please make sure you provide
this manual to the owner of the pumping equipment or to
the responsible party who maintains the system.
Pump Installation and Service Manual

2
Thank you for purchasing your
Hydromatic®pump. To help
ensure years of trouble-free
operation, please read the
following manual carefully.
Before Operation:
Read the following instructions
carefully. Reasonable care and
safe methods should be practiced.
Check local codes and
requirements before installation.
Attention:
This manual contains important
information for the safe use of
this product. Read this manual
completely before using this
product and refer to it often for
continued safe product use.
DO NOT THROW AWAY OR
LOSE THIS MANUAL. Keep it
in a safe place so that you may
refer to it often.
WARNING: Before handling
these pumps and controls,
always disconnect the power
first. Do not smoke or use
sparkable electrical devices or
flames in a septic (gaseous) or
possible septic sump.
To reduce risk of electrical shock:
1. Risk of Electrical Shock:
This pump has not been
investigated for use in
swimming pool areas.
2. Risk of Electrical Shock:
Connect only to a properly
grounded receptacle.
Septic tank is to be vented
in accordance with local
plumbing codes.
Do not smoke or use sparkable
electrical devices or flame in a
septic (gaseous) or possible
septic sump.
If a septic sump condition
exists and if entry into sump is
necessary, then (1) provide
proper safety precautions per
OSHA requirements and (2)
do not enter sump until
these precautions are strictly
adhered to.
Do not install pump in location
classified as hazardous per
N.E.C., ANSI/NFPA 70-2001.
Failure to heed above cautions
could result in injury or death.
General
Information
Pump
Warning
7. For proper automatic operation,
make sure the pump power
cord is plugged into the
piggyback receptacle on the
diaphragm switch cord.
8. Connect to separate electrical
circuit taken directly from
main switch.
9. Use steel or plastic pipe for all
connecting lines between
pump and sewer outlet.
NOTE: Some city regulations
do not allow installing a pump
with plastic pipe. Check local
regulations.
10.In applications where the
pump may sit idle for months
at a time, it is recommended
that the pump(s) be cycled
every month to ensure the
pumping system is working
properly when needed.
11.Hydromatic check valve
should be installed in
discharge pipe at least 12"
above the discharge outlet
of the pump.
12.For greater protection, an
audible alarm, such as the
Hydromatic Q Alert, should be
used with all pump installations
to indicate a high water
condition exists.
Installation
Instructions
These important instructions
must be followed for satisfactory
performance of your pump:
1. Provide proper sump
(recommended minimum
sump diameter is 18").
2. Do not set pump directly on
the bottom of the sump if it is
not solid. Raise the pump by
placing bricks or concrete
blocks underneath it.
3. Make sure sump is free of
string, cloth, nails, gravel, etc.
before installing pump.
4. Pump is to be connected to a
properly grounded, grounding
type receptacle only.
5. Do not remove ground pin
from electrical plug.
6. Do not use an extension cord.

3
Pump
Installation
OSP50 Shown

4
Pump
Servicing
Read the following instructions
carefully before replacing any
parts. Reasonable care and safe
methods should be practiced.
Check local codes and
requirements before installation.
Only competent electricians
should make the installations.
Servicing should be performed
only by knowledgeable pump
service contractors or authorized
service stations.
WARNING: Always disconnect
the pump from power source
before handling or making any
adjustments. Always wear
rubber boots when there is
water on the floor and you must
unplug the pump or make any
adjustments.
1. Removing pump from sump.
Before removing pump from
sump for repair, check to see if
the trouble could simply be a
blown fuse, tripped circuit
breaker, or a power cord not
completely inserted into the
receptacle.
NOTE: Automatic thermal
overload protects the
sealed-in oil motor. Running
dry may overheat the motor
and activate the overload
protector. This will close the
circuit when the motor cools
and allow pump to restart. If
condition continues to exist,
it may cause premature pump
failure.
Unplug the power cord and
pull the pump, by the handle,
from the sump. Sandblast, if
possible, any dirt or trash from
the outside of the pump before
dismantling.
2. Check diaphragm switch. If
the unit is being operated by
the automatic diaphragm
switch, unplug the pump from
the piggyback receptacle and
plug the pump directly into the
power source. If the pump
starts each time it is plugged
directly into the receptacle and
does not start each time when
plugged into the piggyback
switch with the diaphragm
switch pressed into a start
position, replace the complete
piggyback switch assembly and
retest with the new assembly.
3. Check for impeller blockage.
Check for an obstruction in the
impeller cavity by laying the
pump on its side and inserting
a screwdriver through the hole
in the foot and baffle plate (28)
and the bottom plate (26) and
turning the rotor and shaft
(16). It should turn freely. If
the impeller hangs up or there
is an indication of impeller
blockage, the foot and baffle
plate must be removed by
removing the three hex head
cap screws (29) and the
bottom plate removed by
removing the five hex head
cap screws (27). Clear
the impeller of its obstruction
and clean the impeller,
and reassemble.
4. Check power cord. Check the
power cord (5) for brittleness
or for any cuts or nicks in
the insulation. Using an
ohmmeter, check the
continuity of the power cord.
If any of these tests fail, the
power cord should be
replaced. To replace power
cord, unscrew the nut on the
cord, pull cord up and discard
damaged power cord. Add
pipe sealant to threads and
reinstall by pushing cord onto
pins and tighten nut.
5. Check for air lock. A sump
pump is said to be air locked if
water traps in the pump and it
cannot get out, thus preventing
pump from operating.
TOTAL DYNAMIC HEAD-FEET
0
16
8
24
32
010 20 30 40 50 60
CAPACITY–U.S. G.P.M.
1/2 HP

5
Hydromatic pumps have a
small air vent hole in the
impeller cavity to let out
trapped air. If this hole
becomes plugged, pump may
air lock. To break the air
lock, use a small screwdriver
to clear hole in the
impeller cavity.
As a secondary precaution in
installations of this type —
1⁄16" hole should be drilled in
the discharge pipe below the
check valve. The check valve
should be 12 to 18 inches
above pump discharge. Do not
put check valve directly into
pump discharge opening.
NOTE: In sumps where the
pump is operating daily, air
locking rarely occurs.
6. Check the oil. Remove the
pipe plug (4) in the top of the
motor cover and drain oil into
a clean, dry container. A milky
appearance to the oil indicates
that water has entered through
either worn out or damaged
seals (23, 24), seal ring (20),
or cord nut.
7. Remove the motor cover.
Remove the four hex head cap
screws (22). Use a screwdriver
to pry the motor cover (19)
from the volute case (21) at the
fastening ears, being careful
not to cut the seal ring (20)
with the screwdriver or
crack the motor cover. Lift
the motor cover until it clears
the stator (15).
8. Check for short. Disconnect
the stator leads (7, 8, 9) from
the connector (6). Use an
ohmmeter to check the
continuity of the stator. If
stator fails to pass the
continuity test, it must
be replaced.
9. Remove the stator. To remove
the stator, remove the four hex
head screws (12) and the stator
plate (13). Lift the stator off
the volute case (21) and
set aside.
10.Remove the impeller. To
remove the impeller (25), hold
the rotor (16) in your hand
and tap the impeller with
a plastic or rubber mallet
so as to turn the impeller
counterclockwise.
11.Check the seal. Remove the
rotating portion of seal (24)
from shaft by inserting a
screwdriver under the edge of
the seal and lifting it off
without damaging seal. Inspect
the seal face for any nicks or
an uneven seating of seal face.
If any are present, replace the
seal. (See Step 14.)
12.Remove rotor and shaft. Tap
the rotor shaft (16) at the
impeller end of the shaft with a
plastic mallet to remove the
rotor and shaft. Inspect the
bearings (17). If they do not
rotate freely and smoothly,
they should be replaced. When
new bearings are ready to be
added onto the shaft, do not
push on outer face of bearings.
This will damage bearings. If a
rotor and shaft are ordered
from Hydromatic, the bearings
will be supplied already
pressed on the shaft.

6
Pump
Servicing
Do not fill the motor housing
completely — allow airspace
for oil expansion.
21.Reinstall oil pipe plug. Coat
pipe threads with thread
sealant before installing.
22.Check pump. Plug the power
cord into a grounded outlet
and start pump by applying
pressure to the switch
diaphragm (automatic only —
manual should start when
power is applied). Motor
should run smoothly, be free of
vibration and stop when
pressure is removed.
18.Reinstall the stator. Place the
stator (15) in the volute case
(21) so the stator bolt holes
line up. Lay the stator plate
(13) on the stator (15) and line
up with stator bolt holes. Put in
the stator bolts (12) and tighten
evenly to prevent cocking of
the stator. Push the connectors
of the power cord onto the
stator terminals.
19.Reinstall motor housing.
Tighten down the four hex
head cap screws (22) evenly
to prevent cocking of motor
housing and achieving an
uneven seal on the seal
ring (20).
20.Oil. Fill the motor cap with
high grade transformer oil such
as WOCO Premium 100 oil or
equivalent to at least 1⁄4" over
motor windings (.54 gallon).
13.Remove seal. Remove the old
stationary portion of the seal
(23) from the case (21) by
inserting a screwdriver into the
seal housing of the case from
the top of the case and tapping
lightly with a hammer. Clean
the seal area of the case with a
clean cloth.
14.Reinstall the rotor and shaft
assembly. Push on outer face
to seat bearing in volute case.
15.Reinstall seal. Apply an oil
lubricant to the new stationary
portion of the seal (23) and
press into the case (21). Coat
the new rotating portion of seal
with lubricant and press
into place on the rotor shaft
with the rubber ring facing
the impeller.
16.Reinstall impeller. Add a drop
of Locktite 277 to the shaft
and screw the impeller on
hand tight. The impeller will
force the rotating portion of
seal into position.
17.Replace seal ring. Remove
the old square seal ring (20)
from the volute and stretch
on a new ring coated with
O-ring lube.
Do not roll the ring onto the
volute or improper seating and
water leakage into the motor
housing will result.

7
OSP50
Parts List
Ref. No. Part No. Description Qty.
1 60-000-5 Handle 1
2 14981-001-1 Pipe Plug 1
3 Oil (Purchase locally) .54 gal.
4 19100A012 Bolt, 5/16-18 x 1-1/4" Lg. 4
5.* 14974-008-5 Diaphragm Switch (6-1/2" Range), 115V–10' 1
5.* 14974-009-5 Diaphragm Switch (6-1/2" Range), 115V–20' 1
5.* 14974-010-5 Diaphragm Switch (6-1/2" Range), 230V–20' 1
6.* 5502-005-1 Bracket 1
7.* 30-021-1 Screw, 10-32 x 1/2" Lg. 1
8 19-004-1 Screw, 10-24 x 5/8" Lg. 3
9 14525A010 Seal 1
10.* 19109A070 Jamb Nut 1
11 21-000-2 Foot & Baffle Plate 1
12.* 8498-007-1 Impeller 1
12 16-000-2 Optional Bronze Impeller 1
13 19-002-1 Screw, 10-24 x 3/8" Lg. 5
14 18-002-1 Bottom Plate 1
15 12328-002-2 Volute 1
16 12185-001-1 Reducer Bushing, 2" x 1-1/2" 1
17 77-003-1 O-Ring 1
18 13349-000-1 Motor, 115V 1
18 13592-000-1 Motor, 230V 1
19 56-036-2 MTR HSG 1
20 75-005-1 Cord Nut 1
21 139-014-1 Seal Ring 1
22 14623-010-1 Power Cord, 115V–10' 1
22 14623-020-1 Power Cord, 115V–20' 1
22 14623-220-1 Power Cord, 230V–20' 1
23 4580-001-1 Drivescrew 2
24 13425-069-1 Nameplate 1
25 6000-053-1 Grnd Wire/Terminal Assembly (Grn) 1
26 6000-061-1 Lead Wire/Terminal Assembly (Blk) 2
* AUTOMATIC MODELS
AUTOMATIC
Ref. No. Part No. Description Qty.

8
OSP50AB
Parts List
Ref. No. Part No. Description Qty.
1 60-000-5 Handle 1
2 05022A088 Pipe Plug 1/4" Sckt. Hd. 1
3 Oil .54 gal
4 19100A012 Bolt 5/16 - 18 x 1" Lg. 4
5 00057-044-5 Power Cord Assembly, 115V–20' 1
5 14974-309-5 Diaphragm Switch 1
6 30-021-1 10-32 x 1/2 Screw 1
7 5502-005-1 Switch Bracket 1
8 19-004-1 Screw, 10-24 x 5/8" Lg. 3
9 14525A010 Seal 1
10 19109A070 Jamb Nut 1
11 33-000-2 Foot & Baffle Plate Bz. 1
12 16-000-2 Impeller Bz. 1
13 19-002-1 Screw, 10-24 x 3/8" Lg. 5
160-000-5 Handle 1
205022A088 Pipe Plug 1/4" 1
3Oil Fill .54 gal
419100A012 Bolt 5/16 - 18 x 4
500057-044-5 Power Cord 1
514974-309-5 Diaphragm 1
630-021-1 10-32 x 1/2
75502-005-1 Switch Bracket
819-004-1 Screw, 10-24 x 3
914525A010 Seal 1
1019109A070 Jamb Nut
1133-000-2 Foot & Baffle 1
1216-000-2 Impeller Bz. 1
1319-002-1 Screw, 10-24 x 5
1418-102-1 Bottom Plate 1
1512328-102-2 Volute Bz. 1
1612185-001-1 Reducing
1777-003-1 O-Ring 1
1813349-000-1 Motor, 115V 1
1956-013-2 Housing, Motor 1
2075-007-1 Nut Cord Hex 2
21139-014-1 Seal Ring
2214623-020-1 Cord
234580-001-1 Screw-Drive # 6 2
2413425-069-1 Nameplate, 1
256000-053-1 Green Lead
266000-061-1 Black Lead
14 18-102-1 Bottom Plate Bz. 1
15 12328-102-2 Volute Bz. 1
16 12185-001-1 Reducing Bushing 1
17 77-003-1 O-Ring 1
18 13349-000-1 Motor, 115V 1
19 56-013-2 Housing, Motor 1
20 75-007-1 Nut Cord Hex 2
21 139-014-1 Seal Ring 1
22 14623-020-1 Cord 1
23 4580-001-1 Screw-Drive # 6 5/16 sst 2
24 13425-069-1 Nameplate, 115V 1
25 6000-053-1 Green Lead 1
26 6000-061-1 Black Lead 2
Ref. No. Part No. Description Qty.

9
Pump
Notes
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10
Pump
Notes
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