Section 3 Operation; Operation And Use Questions; Placing Water Pump For Use; Pump Output - Generac 7126 Manuel Du Propriétaire

Operation

Section 3 Operation

Operation and Use Questions

If you have any problems operating your water
pump, please call Generac customer service
at 1-888-GENERAC (888-436-3722).

Placing Water Pump for Use

DANGER
Asphyxiation. Running engines produce
carbon monoxide, a colorless, odorless,
poisonous gas. Carbon monoxide, if not
avoided, will result in death or serious injury.
WARNING
Risk of Fire. Hot surfaces could ignite
combustibles, resulting in fire. Fire could
result in death or serious injury.
WARNING
Hot Surfaces. When operating machine, do not
touch hot surfaces. Keep machine away from
combustibles during use. Hot surfaces
could result in severe burns or fire.
It is a violation of California Public Resource
Code, Section 4442, to use or operate the
engine on any forest-covered, brush-covered,
or grass-covered land unless the exhaust
system is equipped with a spark arrestor, as
defined in Section 4442, maintained in
effective working order. Other states or federal
jurisdictions may have similar laws. Place the
pump on a level surface free from any
obstructions or potential hazards. The pump
should be placed close to the water level to
ensure maximum performance.
• Only operate water pump outdoors in a well
ventilated area. Never operate water pump
indoors, or in a confined space. Be aware
of building openings
systems where exhaust may enter during
use.
• Keep at least five (5) ft (152 cm) of
clearance on all sides of water pump
including overhead.
• Verify water pump is placed on level
ground to avoid tipping during operation.
• Submerge strainer.
NOTE: Suspend the strainer if there is any
mud or sand present at the bottom of the
water.
• Place discharge
location to drain water. Verify that the hose
opening is unobstructed.
Owner's Manual for Water Pump
(000103)
(000110)
(000108)
and ventilation
hose in appropriate
Figure 3-1. Five Feet of Minimum
Clearance
CAUTION
Equipment damage. The hose can be damaged if it
comes in contact with the hot engine muffler. Keep
hose away from muffler during operation.

Pump Output

See Figure 3-2. Pump output will be affected
by the type, length, and size of the suction and
discharge hoses. Suction head is the distance
(A) from the water intake to the suction port.
The pumping height, total head, is the
distance (B) from the water intake to the point
of discharge. As total head increases, the
pump output decreases.
capacity is greater than the suction capacity.
Therefore, it is important to keep the suction
head less than the total head. The time
required to draw water from the source to the
pump (self-priming time) can be decreased by
minimizing the suction head.
Figure 3-2. Pump Output

High Altitude Operation

This equipment produces maximum suction lift
at elevations below 1000 ft (305 m). For every
increase of 1000 ft (305 m) above sea level:
• the engine will lose about 3% of its power
• total head will be reduced by about 10 in
(25 cm).
Lower atmospheric pressure results in slower
engine speeds and reduced water flow
through the pump.
001368
(000124)
The discharge
B
A
000687
7