Product Manual

Operation – Using the Pump (continued)

4. Pressure

Switch

Operation

The pressure switch reacts to outlet pressure, and interrupts power at the

preset shut-off pressure indicated on the pump label. When outlet pressure

drops below a predetermined limit the switch will close and the pump

operates until the shut-off pressure is achieved. The shut-off pressure is set to

factory calibrated standards.

Note: If the plumbing is restrictive or the flow rate is very low, the

pump may re-pressurize the outlet faster than the fluid is being

released, causing rapid cycling (*ON/OFF within 2 seconds). If the

pump is subjected to rapid cycling during normal operation, or for

infrequent periods, damage may occur. Applications which exhibit

rapid cycling should have restrictions in the outlet minimized.

5. Leaving

unattended

If the pump must be left unattended at any time:

a) Disconnect power to the pump.

b) Relieve system pressure.

6. Discontinue

use if

clogged or

inoperative

If the pump becomes clogged or inoperative during use, discontinue use

immediately.

- DO NOT attempt to service while chemicals are in the pump and power is

connected.

- Return to service area to review instructions for troubleshooting before

attempting to service.

CAUTION

DO NOT operate the pump at pressures which cause the motor to exceed the amperes rating

indicated on the name plate.

Improper adjustment of the pressure switch setting may cause severe overload or premature

failure. Failures due to improper adjustment of the pressure switch setting will not be

covered under the warranty.

Note: A reserve, clean container capable of holding at least the volume of the entire pump system

should be kept for use when the pump system needs to be emptied temporarily for repairs. It is

advisable to purchase a reserve tank suitable for pesticide storage from Northern Tool and

Equipment for use in these circumstances. The container should be properly labeled as to its

contents if it is used.