Pentair SHURFLO 802X Serie Manuel D'installation Et D'utilisation

Industrial Series 802X Pumps
Installation and Operations Manual
pressure switch operation
SHURFLO offers various pump models for different applications. The information outlined by this manual is general and not specific
to all 802X series pumps. Be certain the pump material will be compatible with the fluid being pumped. 802X series pumps are
intended for intermittent or continuous duty when the proper operating criteria is met. If unsure of the chemical compatibility with
a given elastomer or the motor's intended design, please call SHURFLO for assistance.
WARNING "Risk of electrical shock". This pump is supplied with a grounding connector and grounding-type attachment
plug. To reduce the risk of electrical shock, be certain that it is connected only to a properly grounded, grounding-type
receptacle. To prevent electrical shock, disconnect power before initiating any work. In the case of pump failure, the
motor housing and/or the pumped fluid may carry high voltage to components normally considered safe.
CAUTION "Intermittent Duty" is defined as: operated and/or frequently started within a period of time that WOULD NOT cause the
motor to reach its maximum thermal limits. Once the maximum thermal limit is obtained, the motor must be allowed
to return to ambient temperature before resuming operation.
CAUTION DO NOT use to pump flammable liquids. Never operate the pump in an explosive environment. Arcing from the motor
brushes or switch, or excessive heat from an improperly cycled motor, may cause an explosion.
CAUTION DO NOT assume fluid compatibility. If the fluid is improperly matched to the pump's elastomers, a leak may occur.
Pumps used to transfer hazardous or hot chemicals must be in a vented area to guard against the possibility of injury
due to harmful or explosive liquid/vapors. Contact the factory for information regarding hot liquids.
CAUTION DO NOT operate the pump at pressures which cause the motor to exceed the amperes rating indicated on the
nameplate. 802X series pumps are equipped with thermal breakers to interrupt operation due to excessive heat.
Once the temperature of the motor is within proper limits, it will automatically reset and the pump will start operation
without warning. The motor is equipped with an integral non-serviceable fuse. Pumps which have an "open" fuse are
not covered under the limited warranty.
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 (typically 15-20 psi [1-1.4 bar] less than the shut-off pressure), the switch
will close and the pump will operate until the shut-off (high) pressure is achieved. The shut-off pressure is set to factory-calibrated
standards. See the motor label for specific pump specifications.
CAUTION Improper adjustment of the pressure switch may cause severe overload or premature failure. Refer to SHURFLO Service
Bulletin #1031 for the adjustment procedure. Failures due to improper adjustment of the pressure switch will not be
covered under the limited warranty.
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 two 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.
If not feasible, consider a SHURFLO accumulator or a SHURFLO "bypass" model pump.
A bypass pump may be used for applications that normally induce frequent start/stop of the motor, and thereby create a potential
for overheating. Models equipped with an internal bypass are designed to pump at high pressure while at low flow rates. Bypass
models equipped with a switch may operate for several seconds even though the outlet side has been closed off. Contact SHURFLO
for information regarding bypass pumps.
PRESSURE SWITCH OPERATION
BY-PASS OPERATION