Sears 390.306062 owner manual PU M P I Nstallation, Operation, Battery Requirements

TABLE I Performance Chart/Sears Diehard Size 24M or 27M

VERTICAL PUMPING DISTANCE

			8	FEET
Battery	Size	--	27M	24M
Gallons	Per	Minute	18.0	18.0
Hours	Available		9.6	8.3
Total Gallons		Pumped	7,212	6,055

BATTERY REQUIREMENTS

I AkWARNING IHazardous electrical current. Can cause se-

vere burns and start a fire if battery terminals are short cir-

cuited. Install battery in box. To prevent accidental shorting across battery terminals, strap cover securely on battery box.

Do not leave battery uncovered. Do not allow children to ;-playaround sump pump installation.

Your Backup Sump Pump depends on the battery used with

it for power. The better the battery, the better the perfor- mance of the pump. We recommend use of a SEARS DieHard

Size 27M or 24M Deep-Cycle Marine battery. This battery will perform well for many hours and stands up well to long periods of little or no use.

In an emergency a SEARS DieHard Size 27M or 24M standard

automobile battery may be used. However, an automotive battery may require charging after only 1 to 2 hours of con-

tinuous use, and the repeated charging cycles may cause early plate failure in the battery.

Use ordy a new, fully charged battery that will fit in the bat-

tery-box.(maximumsize 12-5/8"long, 7" wide and 9-3/8" high including terminals).

PU M P I NSTALLATION

and OPERATION

NOTICE: We recommend a trial fitting of all components

before gluing anything. This will allow you to check pump

mounting height, float switch clearance, etc., while adjust- ments can still be easily made.

1 .Mark side of sump six inches down from top.

2.Fill sump until primary sump pump starts; normal high water level should not be above mark made in step 1. If it is higher, backup float switch may not swing far enough

for proper operation. To lower high water level, adjust

switch on primary sump pump. See primary pump

10	FEET	12	FEET
27M	24M	27M	24M
14.5	14.5	11.5	11.5
9.9	8.3	6.8	5.7
5,557	4,939	3,727	3,189

How through this check valve must be away from the

main sump pump; don't install it backwards! This

check valve will prevent recirculation into the sump

during battery-powered pump operation.

5. Cut rigid discharge pipe from primary sump pump to length. Use PVC piping. Tee supplied is 1-1/2" slip fit; if necessary use 1-1/4"bushings supplied.

NOTICE: Use any tee that fits sump pump discharge line; the adapter that is supplied (Key No. 10, Page 7) will fit

any galvanized or plastic 1-1/4"tee. Do not glue the tee until all parts have been trial fitted.

6.Thread adapter into tee (Figure 2B). When installed, molded-in 'up' should be on top.

7.Install backup pump check valve in adapter. Tab on

backup pump check valve fits into notchat top of adapter.

8.For trial assembly, slip pump into backup pump check

valve to check pump mounting height and to make sure

that there is no interference with float switch operation on either pump; be sure floats will not rub on side of

sump, catch between pump and sump wall, interfere with each other, etc.

9.Remove pump from adapter; remove tee.

lO.Using PVC glue, permanently reinstall tee in primary sump pump discharge pipe.

Grounded

Electrical

Outlet

owner's manual.

3.Drain sump. Measure down 11 inches from top of sump; mark this point on side of sump. Install tee with center of threaded inlet at least this far below top of sump to allow sufficient room for float switch to swing (see Figure 2A).

4.Make sure that installation will not interfere with primary

sump pump operation as follows:

A.Backup pump installation must not interfere with pri- mary sump pump float switch swing.

B.Normal high water level must never be high enough to start backup sump pump.

C.Install a check valve (SEARS Stock No. 2789) in the

main sump pump discharge pipe between the pump and the backup mounting tee (see Figures 2A and 2B).

6" Min.	t
(152mm)	11" Min.
	(279mm)

13801194

Figure ZA - Standard Installation