GRINDER 200-300

Grinding submersilble pumps in cast-iron for sewage water, 2 poles, from 1.5kW to 2.2kW,
Max head: 32 m,
Max capacity: 160 L/min

 

Description

The grinder pumps are provided with a cutting system able to chop up paper, little ropes, towels, napkins, leather, objects in plastic, rubber, lattex or other fibrous parts present into the sewage water. The grinding pumps are required when the delivery pipes are so narrow that a solid part could clog the pipe itself or when it is needed a pump for sewage water but with an high head. The pumps series GRINDER 200-300 must always be connected to a control box including a manual reset amperometric protection: this kind of protection is necessary to avoid that the motor can get burnt in case a too hard solid part blocks the cutting system.

 Use

The GRINDER 200-300 are very professional and they are usually installed in hospitals, camping, restaurants and hotels. These models cannot be used to pump water containing stones nor hard solid parts (e.g. pieces of wood or metal) nor straw.

Operation conditions

Max liquid temperature: 50 °C (122 °F)

pH: 6-10

Max density < 1100 kg/m³

Max immersion depth: 30m

 

 

Performance curve:

 

Models                                             Head (m)                                          
4 8 12 16 20 24 28 32
Capacity
GRINDER 200  L/min   136 127 115 100 80 46 0  
m3/h 8,2 7,6 6,9 6,0 4,8 2,8 0  
L/s 2,27 2,12 1,92 1,67 1,33 0,77 0  
GRINDER 300 L/min 156 150 142 130 119 100 71   0  
m3/h 9,4 9,0 8,5 7,8 7,1 6,0 4,3  0 
L/s 2,60 2,50 2,37 2,17 1,98 1,67 1,18  0 

 

 

Technical characteristics:

Outlet 1"1/4 - DN 32 vertical flanged with threaded counterflange
Solid passage ---
Cutting system Composed by a fix cutting ring and a rotating knife
Impeller Back open impeller "vortex" type.
Mechanical seal Double mechanical seal in oil chamber. The lower one in silicum carbide / silicum carbide / NBR, the upper one in allumina / graphite / NBR +  NBR oil seal.
Motor Dry. Insulation class: F.
Motor protection Automatic reset built-it thermal protection (also on the three-phase models). Anyway the pumps must be connected to a fused remote isolator switch at customer's care (see optional electric board) also for single-phase models
Float-switch

The pump model GRINDER 200 (230V/50Hz/1-ph) can be supplied both with and without float-switch, the pumps models GRINDER 200 and GRINDER 300 (400V/50Hz/3-ph) are supplied without float-switch.

Cable

For the single-phase version: 10 meters cable H07RNF 3G1.5 without plug; for the three-phase version: 10 meters cable H07RNF 4G1.5 without plug

Capacitor Start capacitor: 100μF - 250V, running capacitor: 12μF - 450V.
Only for single-phase version
IP 68

 

 

Electric characteristics:

Models Power Nos. poles  R.p.m.   Voltage            Ampere 
GRINDER 200   2.0HP - 1.5kW  2 2850 230V/50Hz/1 10,2 A
400V/50Hz/3 3,5 A
GRINDER 300 3.0 HP - 2.2kW 2 2850 400V/50Hz/3 5,0 A

 

 

Materials:

Cutting system   Stainless steel AISI 440 tempered                                        
Impeller Cast-iron GG 25                                                             
Pump cover Cast-iron GG 25
Motor case Cast-iron GG 25
Pump body Cast-iron GG 25
Pump support Cast-iron GG 25
Motor shaft Stainless steel AISI 403
Packing set NBR

 

 

Weight and dimensions:

Models Voltage Outlet             Dimensions (mm)                Weight 
female threaded A B C D E (kg)
GRINDER 200  230V/50Hz/1  1"1/4 - DN 32 597 285 270 250 680 36
400V/50Hz/3 546 285 270 250 520 33
GRINDER 300 400V/50Hz/3 1"1/4 - DN 32 546 285 270 250 520 35

  

 

Optionals:

Connections Professional straight brass connection 1"1/4 in three pieces
No-return valve Professional ball check valve threaded 1"1/4 in cast-iron
Float-switch 10 or 20 metres cable float-switch to be connected to an electric board
Electric board The models GRINDER 200 and GRINDER 300 (both single-phase and three-phase) must necessarly be connected to an electric board with an amperometric protection (as the models F5-0.5/3-1 for single-phase pumps and F6-0.5/10-3 for three-phase pumps). This kind of protection is necessary for grinder pumps to avoid that the motor can get burnt in case a too hard solid part blocks the cutting system.

 

 

GRINDER 200-300 ENG - REV. 2.0 - 29/08/2017

Comex Srl Via delle Industrie, 42 - 31057 Silea (TV) - ITALY
P.I.: 00345210264 - Cap. Soc.: 50.000€ i.v.