Danner 20370 User manual

PUMP SHOWN SEATED
INSIDE POOL MAIN DRAIN
MAX FLOW
RATE
5373 GPH - SEE TABLES 1 & 2
MAX HD HT 32 FEET - SEE TABLES 1 & 2
MIN WATER
DRAW
2 INCHES DEEP
VOLT/FREQ. 120 VOLT / 60Hz
WATTS 593
AMPS 4.9
FITTINGS
INCLUDED ELBOW, COUPLING and
1 ½” BARBED
Specifications:
Model # 20370 Utility Pump
This versatile pump is designed primarily for use in draining in-ground pools for
the purposes of maintenance and liner re-placements. The slotted “basket-type”
base measures less than 5 ½” in diameter. This dimension in conjunction with
the (4) cored reliefs @ 90 degrees apart, allows it to fit inside the drain and seat
itself several inches below the top surface of the main drain flange, thereby
draining ALL the water in the pool. It can also be used in Irrigation, Pond and
any other general watering or de-watering application.
WARNING : POOLS ARE DANGEROUS TO SMALL CHILDREN. NEVER LEAVE
CHILDREN UNSUPERVISED NEAR A POOL.
Operating Precautions:
PROBLEM POSSIBLE CAUSE SOLUTION
Pump stops
running
OR
Severe decrease in
flow rate
occurs.
Faulty Power Source
Check all power sources and
connections, GFCI and Circuit
Breakers.
Test pump in a second outlet
or power source.
Internal Thermal Pro-
tection Device has
Tripped
Unplug and allow the pump to
cool down.
Check inlet for debris and re-
move before re-starting.
Slotted Base or Intake is
clogged with debris
Disconnnect power and clean
out debris from around Base or
Impeller Intake Inlet.
Motor runs but does
not pump any
water.
Pump Intake is above
water level Shut off Pump so as not to
overheat and discontinue use
until water level has risen OR
relocate pump to deeper water.
Pump is cavitating due to
water level getting too low
Air Lock is occurring in-
side pump chamber
Disconnect power from the
pump. Turn pump upside down
in the water to release any
trapped air pockets within the
chamber and then return pump
to upright position. Reconnect
power and test.
TROUBLESHOOTING
POOL MAIN
DRAIN
Pump does not start
after replacing the
Rotor / Impeller Ass’y
The 6mm Screws (item 7)
which fasten the volute to
the housing have been
overtightened.
Remove base, loosen flange
nuts, back off screws 1/4 turn.
Re-tighten flange nuts and re-
attach base.
Note: A threadlocker should be
applied to all machine screws.
LIMITED WARRANTY
1. DO NOT RUN PUMP DRY.
2. DO NOT OPERATE PUMP WITHOUT AN
AUTOMATIC FLOAT SWITCH.
•DO NOT USE IN HIGHLY ABRASIVE ENVIRONMENTS OR IN WATER WITH LARGE ,
UNDISSOLVED SOLIDS.
•NEVER USE PUMP IN ANY LIQUID OTHER THAN WATER.
General Maintenance:
•ALWAYS RINSE AND FLUSH PUMP THOUROUGHLY AFTER USE IN SALT WATER AND
ANY TYPE OF ACID WASH PROCEDURES.
E.G.Danner Mfg.,Inc. will repair or replace any unit found to be defective within
one year of original purchase. Cutting or altering cord, removing or defacing
product labels, running pump dry or without the use of an automatic float switch
voids any warranty consideration. For warranty repair, return only the part that is
defective to our factory. Please include a dated proof of purchase and $20.00 for
postage and handling. Damages or injuries resulting from negligence, shipping,
handling, improper installation, maintenance or misuse of the product are not
covered by the warranty. This warranty gives you specific legal rights. You may
have other rights which vary from state to state. To validate this warranty keep
your proof of purchase. (Copy of your sales receipt.).
1 year limited warranty does not cover externally attached components.
(i.e., slotted base, mounting plate, elbow , fitting, automatic float switch)
Pump makes"squealing"
sound when plugged in
Ceramic bearings
are running dry
REMOVE POWER IMMEDIATELY
Verify Slotted Base is submerged
ZG588 Rev E 01/20

Table 2
Horizontal Flow
FLOW
RATE
(GPH)
HEAD
HEIGHT
(FEET)
5373 0
5142 5
4390 10
3790 15
3000 20
2250 25
0 32
FEATURES:
Construcon – urable ABS esin.
to 5400 gph. ( measured at zero head height)
Performance – Pumps up to 4400 gallons per hour at 10 feet of
Bearings – Heavy Walled Ceramic
Impeller- High Flow Rate Vortex type for Silent
– Water being pumped cools the motor during discharge.
Serviceability – Pump Intake, Impeller/Rotor Ass’y and Base can easily be removed
for service or replacement.
Warranty - One Year Limited.
SPECIFICATIONS:
Motor –
Power Cord – -Pronged grounded type plug.
Minimum Water Depth – 2 inches
Service and Maintenance
In the event your pump requires disassembly due to a clogged intake, a jammed Impeller
or if a Rotor/Impeller replacement service is required, see the following steps below.
REMEMBER: ALWAYS DISCONNECT PUMP FROM POWER SOURCE BEFORE SERVICING !
1. Remove the four self tapping screws (item 1) which hold the slotted base (item 2) onto the
Interface Plate (item 4).
2. Remove the four flange nuts (item 3) using a 10mm socket, box or open end wrench.
3. Remove the Interface Plate (item 4) from the Pump.
4. Remove the four 6mm threaded screws (item 7) from the pump head.
5. Remove the volute (item 6).
6. Remove the Impeller / Rotor assembly and gasket (item 12)
7. Replace parts back in reverse order. Be sure to apply a removable threadlocker to retain
item 3 nuts to item 7 screws.
FLOW
RATE
(GPH)
HEAD
HEIGHT
(FEET)
5142 0
4615 5
4000 10
3050 15
2571 20
2000 25
0 32
Table 1
FLOW RATE TABLES
Replacement parts
No. Description Part No.
12 ROTOR 21100
11 BARB FITTING ZL340
10 COUPLING ZL341
9 ELBOW ELBOW
2,4 SLOTTED BASE
& PLATE ASS'Y 20370BASE
ELECTRICAL PRECAUTIONS
Always use a properly grounded outlet. Do not immerse the plug in water. DO NOT
REACH INTO THE WATER TO REMOVE THE PLUG. TURN OFF CIRCUIT FIRST. A “Drip
Loop” in the cord should be used. A “Drip Loop” is a loop in the cord below the lev-
el of the receptacle or plug that prevents any water from travelling along the cord
Circuit Interrupter (GFCI) be installed in every branch supplying the equipment. Your
dealer can provide GFCI units. NEVER REMOVE THE GROUND PIN FROM THE PLUG.
WARNING—Risk of electric shock. This pump is supplied with a grounding conductor
and grounding–
that it is connected only to a properly grounded, grounding-type receptacle.
WARNING: FOR YOUR PROTECTION, ALWAYS UNPLUG THE UNIT FROM ITS POWER
SOURCE BEFORE INSTALLING OR SERVICING. DO NOT REACH FOR, REMOVE OR
DISASSEMBLE UNIT BEFORE DISCONNECTING POWER TO IT.