1
1. Principles of operation
There are two diaphragms fixed to the center rod, one at each end. When compressed air is supplied to air
chamber b (right side, see Fig.1.1), the center rod moves to the right, the material in material chamber B is
pushed out, and at the same time material is sucked into material chamber A.
When the center rod is moved full-stroke to the right, the air switch valve is switched, compressed air is
sent to air chamber a (left side, see Fig.1.2), and the center rod moves to the left. The material in material
chamber A is pushed out, and at the same time material is sucked into material chamber B.
Through repetition of this operation, material is repeatedly taken in and discharged out.
2. Maintenance and Tools
2.1 Maintenance
Pump maintenance is recommended after each of the following periods.
Estimated inspection timing (Based on water at room temperature)
Type of diaphragm
Operation hours (h)
Type of diaphragm
Operation hours (h)
CR 1100
PTFE 200
NBR 1100 TPEE 1600
EPDM 1100 TPO 1600
FKM 250
* In critical operations where preventive measures need to be taken, it is recommended to inspect
diaphragms after every three months of operation.
2.2 General tools
· Socket wrenches
13mm, 17mm, 19mm
· Hexagonal box wrenches
6mm
· Small crowbars
2 (B
□
C, B
□
N, B
□
E, B
□
V)
· Open-end wrenches
19mm, 24mm
· Plastic hammer · Phillips head screw driver · Ajustable angle wrenches · Needle Nose Pliers
2.3 Special tools
· PP wrench (sold separately) · Sleeve remover (sold separately)
Purpose: Removing the center disk Purpose: For removing sleeve
2.4 Misc.
· Assembly oil
Turbine oil none addition class 1(equivalent ISO VG32 grade)
· Nuts M16
X
1.5
· Thread locker
· Grease
Urea grease grade (NLGI) No. 2