- 4 -
Outline of product
3) Check if the product is not damaged and any parts are not lost in
transit. Check that any bolts or nuts are not loosened.
If you find any abnormality, ask us.
2. Principle of operation
IWAKI electromagnetic metering pump the EHN series is a dia-
phragm metering pump which consists of a pump head, driving unit,
and control unit. A diaphragm is directly driven by electromagnet
force.
A reciprocating motion is made by a spring and electromagnetic
force generated by pulse current coming from a control unit. The
reciprocating motion is transferred to a diaphragm through a plunger
and makes volumetric change in a pump chamber. Pumping action is
obtained by volumetric change and by valve action in pump head.
1. Unpacking and inspection
1) Check the model code, dis-
charge capacity, discharge
pressure and voltage etc.
shown on nameplate to
confirm the pump is in your
specification.
2) Check if accessories are
attached.
a. Check valve or back pres-
sure valve : One piece
Control unit
Pump head
Driving unit
Stroke length
adjusting knob
Plunger
Diaphragm
Spring
Model
Set press.
MPa
Connection
Wet-end material
Applied pump
model
CS-1S
0.2
SUS316
Hastelloy C
PTFE
EHN-B11
ּ
21
EHN-C21
ּ
31
CS-1SL
RC1/4
EHN-C36
0.05
