Pump Maintenance; Draining The Pump - red lion RBSS-75FC El Manual Del Propietario

MAINTENANCE

Pump Maintenance

Pump Maintenance

Draining the Pump

Drain the system if it will be subjected to temperatures below 32 °F (0 °C) or if maintenance is to be per-
formed.
1. Disconnect power from the system.
2. Turn off the main water supply.
3. Open a nearby faucet to release the water pressure in the system. Once all water and pressure is
released, turn off the faucet. At this point, in a municipally supplied water system, Valves 2 and 3 can be
closed, and Valve 1 can be opened. This will allow water to flow through the building while the system is
being serviced.
4. Using a 14mm socket wrench, remove the drain plug and priming plug from the pump.
5. When all water has drained, re-install the plugs.
6. The pump and control system can now be disconnected at the unions.
Risk of damage to plumbing by freezing and damage to property by flooding.
• Draining the pump will not necessarily drain all other parts of the piping system. All piping exposed to freezing
weather should also be drained.
Replacing Seals, Impellers, or Volutes
Risk of damage to pump or other property.
• Only qualified persons should perform maintenance on electrical or mechanical devices.
• Care must be taken not to damage the motor fan or cover.
• Do not use petroleum-based cleaners or lubricants.
• Care must be taken not to contaminate the ceramic seal face.
Disassembly
Refer to "Replacement Parts" on page 11
1. Ensure the pump is disconnected from electrical power and drained.
2. Using a 5 mm hex key, remove the 6 screws and washers (1), remove the 3-piece flange (2) and remove
the casing (4).
3. Remove the o-ring (6) located on top of the volute cover (7). You will notice that the volutes are not on
tight, this is normal.
4. Using a #1 cross-head screwdriver, remove the 4 screws (19) around the motor cover (18). Remove the
motor cover. The fan blade (22) will be exposed.
5. Place a slotted screwdriver in the slot near the center of the fan blade (22) and hold this firmly in place
to prevent the shaft from turning. At the same time, use a 13 mm socket wrench to turn the acorn nut
(5) at the front of the pump and remove the acorn nut and washer. NOTE: you may want to have a sec-
ond person help you with this task.
6. Slide off the volute cover (7).
7. Gently pry off both volutes and impellers from the shaft, taking care to prevent damage to the volute or
volute base.
8. Remove the o-ring (12) from the volute base (13).
9. Inspect all parts and replace any that are worn or damaged. Refer to
8
for parts references (1, etc.).
"Replacement Parts" on page 11.