Grundfos JP Service Instructions

English (GB)
6
5.3 Replacing the plugs
Fig. 5 Replacing the plugs
1. Remove the two plugs (31) by turning each plug
counterclockwise with a big flat screwdriver.
2. Lubricate the O-ring seats on the pump housing (1). See
section 7.1 Lubricant.
3. Place the new plugs (31) and O-rings (32). Fasten the plugs
(31) by turning the plug clockwise with a big flat screwdriver.
5.4 Dismantling the hydraulic parts
Fig. 6 Hydraulic parts and pump housing
1. Place the pump housing (1) vertically with the inlet facing
upwards.
2. Use a suitable tool which fits inside the inlet and gently press
down on the venturi tube (21) to loosen the hydraulic parts
(20, 21, 21a and 13).
Fig. 7 Removal of hydraulic parts
Fig. 8 How not to remove the diffuser
TM07 3810 0519TM07 3811 0519
31
32
1
32
31
1
21
20
13
21a
TM07 3812 0519
Do not try to remove the diffuser (20) by using
screwdrivers or similar tools, as it might break.
TM07 3813 0519
1
21
20
20

Grundfos JP Specifications

General

Power supply	Electric
Material	Stainless Steel, Cast Iron
Applications	pressure boosting
Pump Type	Self-priming centrifugal pump
Horsepower	1.5 HP
Phase	Single-phase
Inlet Size	1 inch
Outlet Size	1 inch