Milton Roy Hartell KT3 Owner's manual

INTRODUCTION
HARTELL condensate pumps are designed to collect and automatically remove the water produced
from an air conditioner evaporative coil and/or a gas-condensing furnace. This pump has been care-
fully engineered to provide long, trouble free service and is of the highest quality workmanship and
materials.
These pumps have been thoroughly inspected and tested, then carefully packaged to insure safe de-
livery and operation. When you receive your pump, examine it carefully to determine that there are
no damaged or broken parts. If damage is detected, notify the firm from where the pump was pur-
chased. They will assist with a repair or replacement.
See the precautions listed below before continuing.
CAUTION: READ ALL INSTRUCTIONS CAREFULLY BEFORE STARTING INSTALLATION
- Pump should only be used with liquids compatible with pump component materials. Do not use to pump flammable or
explosive fluids. Do not use in explosive atmospheres.
- The pump is supplied with a grounding type plug. To reduce the risk of electrical shock be certain that it is connected to
a properly grounded, grounding receptacle.
- In any installation where property damage and/or personal injury might result from an inoperative or leaking pump
due to power outages, discharge line blockage, or any other reason, a back up system(s) (aux. switch) and/or alarm
should be used.
- Do not handle pump with wet hands or when standing on a wet or damp surface, or in water.
- Shut off the electrical power at the fuse box before making any connections. All wiring must comply with local codes.
THREE YEAR LIMITED WARRANTY
HARTELL KT3 and PAB3 condensate pumps are guaranteed to be free from defects in workmanship or materials and
to function satisfactorily, when properly installed, for a period of THREE (3) years from date of installation. HARTELL
will replace, without charge, any HARTELL product found to be defective upon examination at our factory if returned
within the guarantee period, transportation charges prepaid.
This guarantee does not apply if the product has been misapplied or mechanically damaged, HARTELL assumes no
liability for resultant damages of any kind arising out of the use of its products.
Condensate removal pumps from Hartell
KT3
PAB3
INSTALLATION
OPERATION
MAINTENANCE
Phone: [phone]
70 Industrial Drive Fax: [phone]
Ivyland, PA Web: www.hartell.com
18974 Email: [e-mail]
Division of Milton Roy Co.
Hartell Pumps

INSTALLATION
Carefully unpack the pump and select a mounting location on the wall, the case of the air conditioner, or
floor. The pump must be level and the inlet must be below the lowest drain, either coil or furnace. If wall or
case mounting, use the mounting tabs on either side of the reservoir to secure the pump.
PIPING—Run flexible tubing or pipe
from the evaporator and furnace to
the pump. Insert the pipe into the
drain inlet hole. Make sure the pipe
does not interfere with the float.
Cut an angle on the inlet pipe so
that it doesn’t close off against the
bottom of the pump. See Figure 1 –
exploded detail.
Connect 3/8” ID tubing to the
barbed check valve. Extend this
tubing straight up as high as neces-
sary. (Do not extend this tubing
past the head/GPH of the pump
installed). Do not kink the tubing,
as this will block the flow. From this
high point, slope the discharge tub-
ing downward to a point above the
drain, then turn down and extend
to a point below or level with the
bottom of the condensate pump. If
it is not possible to slope the dis-
charge tubing downwards, make an inverted “U” trap directly above the pump at the highest point. (Figure 1)
ELECTRICAL CONNECTIONS—review precautions on previous page
LINE VOLTAGE—Connect power cord to the proper voltage as indicated on the motor nameplate. Connect
only to a source of constant power, not an intermittent source such as a fan or limit control circuit.
LOW VOLTAGE—AUXILIARY SAFETY SWITCH–Connect the leads of auxiliary
safety switch to the thermostat control circuit of the air conditioner/furnace. This
will disrupt the thermostat demand in a high water condition. (Figure 2)
CAUTION –Thermostat demand disruption should not be utilized if cooling or
heating requirements are a necessity. An alarm system should be used with the
auxiliary switch instead.
OPERATION
After proper installation, the operation of the HARTELL condensate pump is automatic. Water is collected in
the reservoir and pumped out when the float raises to a pre-set point. As the water level goes down the float
turns off the motor at another pre-set point. Under most circumstances the pump requires little maintenance
for efficient operation. If a problem occurs, please refer to the maintenance instructions below.
MAINTENANCE
If a problem develops, the following guidelines can help to return the pump to service.
PUMP DOES NOT RUN
- Check to see that the power to the system (air conditioner and/or furnace) is on to allow production of con-
densate.
- Check that the pump is plugged in and the circuit is active (i.e. fuse or breaker not blown).
- Check the level of water in the reservoir; the level must be within 2” of the reservoir top to activate the
Hose Clamp
3/8" ID Tubing
To Floor Drain
or Laundry Tub.
Ceiling and Joists
Grounded
Outlet
Discharge tube should
slope down toward
outlet if possible
Do not kink tube !
Cut tubing at an angle
so that bottom of
reservoir doesn't close it.
Be sure tubing does not
interfere with float.
Figure 1
Condensate
Pump
Yellow
Yellow
Red
White
Green
Yellow
Wire Nut From Thermostat
Furnace / A.C.
Figure 2

switch. (The inlet tube may be blocked and require cleaning if no water is entering the reservoir).
- If there is a proper amount of water in the reservoir, the float may be stuck due to dirt or algae formation.
(Flush the reservoir with warm water and a mild soap or detergent). See note below.
PUMP MOTOR RUNS WITH NO DISCHARGE
- Inspect the discharge tubing for its full length to make sure it is clear; make sure the tubing end is not
plugged.
- Make sure the check valve is not clogged. (If clogged, UNPLUG THE PUMP, remove the fitting and clean
with mild soap or detergent). See not below.
- The discharge port of the impeller chamber may be clogged due to an accumulation of debris. (See instruc-
tions below on how to disassemble unit and clean chamber).
NOTE: In case of extreme algae formation, UNPLUG THE PUMP, and fill the reservoir with a commercially
available algaecide. Follow directions for destroying the algae. After the proper waiting period DUMP the al-
gaecide out of the reservoir. Rinse with water, repeat if necessary. Be careful not to clog the check valve when
starting the pump after this thorough cleaning.
CLEANING
Under most circumstances the pump requires little maintenance for efficient operation. If a problem occurs,
please refer to the maintenance instructions below.
DISASSEMBLY
- UNPLUG THE PUMP; drain the water from the reservoir
- Place the pump upside down; place a screwdriver under the
tab of the baseplate, (put a thumb over the tab to prevent
breakage), and pry the cover up and off. (Figure 3)
- Remove the “O” ring seal and keep it clean. (Figure 3)
- Remove any debris from the impeller chamber and spin the
impeller by hand to insure free movement.
ASSEMBLY
- Clean and lightly lubricate the “O” ring with vegetable oil
- Stretch the “O” ring onto the baseplate (Figure 3)
- Place the tab of the baseplate into the slot of the reservoir base; hold the
tab in place with the thumb and snap the cover into the reservoir with
the heel of the hand; tap the cover with a plastic mallet if required to fully
seat it. (Figure 4)
- Test for leaks; if a leak occurs, re-install cover using a new “O” ring if neces-
sary.
Hold down
tab with thumb
Press plate
into place here
with heel of
other hand
Figure 4
P/N 900951 REVB
Figure 3
Keep these sheets with the pump. They may be valuable if service is needed under the terms of the warranty.
Model # Date of installation:
Installer: Date Code:
Dealer: