REMKO RT 080, Руководство оператора, Страница: 16 / 40

Lines with a Bypass
If an Automatic Air Release Valve has been installed, the valve will automatically open
to allow the pump to prime, and automatically close after priming is complete (see
INSTALLATION for Air Release Valve operation.
Lines without a Bypass
Open all valves in the discharge line and start the power source. Priming is indicated by
a positive reading on the discharge pressure gauge or by a quieter operation. The
pump may not prime immediately because the suction line must first fill with liquid. If the
pump fails to prime within five minutes, stop it and check the suction line for leaks.
After the pump has been primed, partially close the discharge line throttling valve in
order to fill the line slowly and guard against excessive shock pressure which could
damage pipe ends, gaskets, sprinkler heads, and any other fixtures connected to the
line. When the discharge line is completely filled, adjust the throttling valve to the
required flow rate.
15
10. OPERATION
9. STARTING
Consult the operations manual furnished with the power source.
Rotation
The correct direction of pump rotation is counterclockwise when facing the impeller.
The pump could be damaged and performance adversely affected by incorrect
rotation. If pump performance is not within the specified limits (see the curve on page
20), check the direction of power source rotation before further troubleshooting (figure 9).
If an electric motor is used to drive the pump, remove V-belts, couplings, or otherwise
disconnect the pump from the motor before checking motor rotation. Operate the motor
independently while observing the direction of the motor shaft, or cooling fan.
If rotation is incorrect on a three-phase motor, have a qualified electrician interchange
any of the phase wires to change direction. If rotation is incorrect on a single-phase
motor, consult the literature supplied with the motor for specific instructions.
Do not operate the pump against a closed discharge throttling valve
for long periods of time. If operated against a closed discharge
throttling valve, pump components will deteriorate, and the liquid
could come to a boil, build pressure, and cause the pump casing to
rupture or explode.
WARNING!
Leakage
No leakage should be visible at pump mating surfaces, or at pump connections or
fittings. Keep all line connections and fittings tight to maintain maximum pump
efficiency.