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MAINTENANCE
Figure 14: Remove Nozzle
9.
When replacing nozzle and venturi, be sure they are tight
against the shoulder. Use care to not cross thread. If nozzle
is not fully engaged in case, flow will be blocked by venturi
entrance.
10. Remove 4 bolts holding motor to bracket and remove motor.
REPLACING MECHANICAL SEAL
1.
The seal used on all HJ units is 5/8" size.
2.
This seal is made in two parts:
a. Rotating assembly, stainless steel spring, drive ferrule
with rubber ring and carbon seal ring.
b. Stationary ceramic seal ring mounted in synthetic
rubber cup.
3.
Always replace both rotating assembly and stationary
ceramic seal. DO NOT USE OLD STATIONARY SEAT WITH
NEW ROTATING ASSEMBLY SEAL.
4.
Old ceramic ring can be removed form housing by cracking
with a chisel or screwdriver without removing the pump
shaft.
5.
Housing and shaft must be clean and free of sand and dirt
before replacing new seal. Wash parts with clean water.
6.
Place stationary ceramic seal into housing. Press in with
fingers only.
7.
Place rotating assembly unit on shaft, carbon ring toward
ceramic seat, and press into position with fingers.
8.
Dirt on seal faces can cause failure.
All pumping parts of unit can be removed from case without
disturbing well piping or tank piping.
P15004 (12-15-22)
HR MODELS
HOW TO DISMANTLE (HR DEEL WELL)
1.
Disconnect power and drain pressure tank before
dismantling pump.
2.
Disconnect the pressure switch tube, remove the 4 cap
screws and separate the pump case from the seal plate.
3.
Remove the 3 cap screws holding the diffuser to the seal
plate and remove the diffuser. When replacing the diffuser,
use three .010" thick shims equally spaced between the
impeller eye and diffuser opening. This centers the diffuser
and prevents impeller rub (Figure 15).
Figure 15: Remove Diffuser
4.
Remove the impeller by holding the pump shaft with a
screwdriver placed in the slot end of the motor shaft and
rotating the impeller counterclockwise (Figure 16).
Figure 16: Remove Impeller
5.
Remove the rotating assembly of the shaft seal.
6.
The seal plate may now be removed.
7.
The ceramic stationary seal can be driven out using a 3/4"
dowel.
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