19
e Simplex Day Tank has been designed to require
minimum maintenance. All components have been
chosen for a long, reliable life. e Day Tank is
constantly lubricated by the diesel fuel it transfers.
Inspect this tank at least once every year for dam-age,
leakage, or rust on both inside and outside the tank.
Promptly repair or replace any signicantly dam-
aged or deteriorated Day Tank. Two basic intervals
of maintenance are required: each year and aer the
rst 3 years.
1. Water and sediment should be drained from the
tank each year. If normal engine/generator testing
does not consume one tank full of fuel each year
the tank should be drained and relled with fresh
fuel.
2. Remove the inspection port from the Day Tank.
Examine the interior of the Day Tank. e port
is shown in the dimensional drawing. Using an
inspection lamp examine all internal Day Tank
components. With tank drained test sending unit
operation. Install a new inspection port gasket
and replace the inspection port cover.
3. Press the Test Fill pushbutton and observe pump
and motor performance.
4. Inspect pump/motor alignment and wear. Inspect
the pump for leaks.
5. Re-tighten hose clamps at pump/hose connec-
tions. Re-tighten the pump bracket, motor brack-
et, and pump/motor coupler hardware.
6. Inspect all plumbing connections for leaks. Test
all options and fuel level alarms for proper opera-
tion.
7. Re-tighten all electrical connections.
Aer three years of normal use re-oil the Day Tank
motor with 10 drops of 5W30 or 10W oil. Do not over
oil the motor.
5 MAINTENANCE
eaCH year
after tHe fIrSt
tHree yearS
Repairs or alterations
of this day tank without
written approval from
Simplex may void the
warranty and incur liability
for anyone making such
repairs or alterations.
Alterations may result in
severe personal injury
or death due to electrical
shock, re or explosion.
If you have any questions
regarding Day Tank main-
tenance, call Simplex
service at (800) 637-8603
(24 hrs.).
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