Dometic PM Series Montagehandleiding En Gebruiksaanwijzing pagina 7
Magnetische aandrijving centrifugaalpomp
Beschikbare talen
Beschikbare talen
9.1
Priming the pump
The pump is not self priming.
1. Mount the pump below the water line to prime the pump head.
2. Connect the external liquid source to the pump.
3. Open the inlet (suction) and discharge valves completely to allow the pump to fill
with liquid.
9.2
Starting the pump
1. Ensure all valves are open and the pump connections are secure.
NOTE The pump requires positive suction at the pump head to prevent
cavitation.
2. Close the discharge valve.
3. Turn the pump on.
4. Slowly open the discharge valve to adjust the flow rate and pressure. Do not try to
adjust the flow with the suction valve.
9.3
Verifying the motor rotation
A pump running backwards will pump but at a greatly reduced flow and pressure.
1. Run the motor for 1 s ... 2 s and observe the rotation of the motor fan.
2. To find out the correct motor rotation direction, refer to:
• The directional arrow molded into the pump casing
• The rotational sticker at the rear of the pump motor
3. If the motor rotation direction does not match the direction of the pointing arrows,
check the wiring diagram on the pump and resolve any wiring issues.
9.4
Shutting down the pump
1. Turn off the motor.
2. Slowly close the discharge valve.
3. Close the suction valve.
10 Cleaning and maintenance
NOTICE! Safety hazard
Failure to maintain the pump properly could result in unsafe operation.
Flush and drain the pump of all liquids before performing maintenance.
10.1
Recommended maintenance schedule
Maintenance depends upon the nature of the fluid being pumped and the specific
application. The specific maintenance schedule should be determined based on the
examination of the internal components and measurement of wear items.
NOTE Always remove the pump from service before inspection.
Table 1: Recommended maintenance schedule
Fluid type
Clean water, clean seawater, or closed-loop
chiller systems
Water contaminated with solids
Intake water outside of normal operating tem-
peratures. See
Technical data
on page 10
Period
Inspect the pump's impeller and seals every 6
months or after 2000 h of service
Inspect the pump's impeller and seals if the
pump's efficiency is degraded.
10.2
Flushing and draining the pump
1. To remove internal pressure, drain the pump of fluids before performing
maintenance.
2. Shut down the pump properly (see
3. Connect the flushing fluid supply to the inlet valve.
4. Connect the flushing fluid drain to the discharge valve.
5. Open the flushing inlet and discharge valves.
6. Direct the flushing liquid into the system until the pump is clean.
7. Stop flushing the liquid to allow the pump to drain of all fluids.
10.3
Dismantling the pump
Exploded view - P030
Exploded view - P045, P062, P075, P100
Exploded view - P137, P150, P200
① Pump housing
② Housing O-ring
③ Impeller thrust ring
④ Impeller assembly
⑤ Impeller drive assembly
⑥ Impeller bushing
⑦ Impeller sha
⑧ Motor barrier
1. Shut down the pump. Lock out the motor from the power supply.
2. Flush the pump. Then drain all the fluid (see chapter
Pump).
3. For small pumps 2 hp (1.49 kW) or less, place the pump and motor in an upright
position on the fan end of the motor or clamp the foot to a workbench securely.
4. For larger pumps with 3 hp (2.24 kW) or greater, place the pump securely on the
floor with the pump head facing up.
Shutting down the pump
on page 7).
⑨ Motor barrier
⑩ Clamp ring (not included on P200)
⑪ Clamp O-ring
⑫ Motor adapter
⑬ Outer drive magnet
⑭ Motor sha
⑮ Motor
⑯ Foot (not included on P200)
Flushing and Draining the
EN
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