DROPSA 3414 Series, Operation And Maintenance Manual

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1. INTRODUCTION
This operation and maintenance manual refers to the Hydraulically controlled pump - Series 3414... and contains important
information for the health and safety protection of the personnel who use this equipment.
The most recent version can be obtained by requesting it from the Sales Technical Office or online at
http://www.dropsa.com .
This manual must be read carefully and kept so that it is always available to the operators who want to consult it.
2. GENERAL DESCRIPTION
The Hydraulically controlled pump - Series 34 14… , of sturdy construction and highly reliable, is made up of a galvanized steel
body, piston in hardened and lapped steel and a hydraulic control cylinder in which a piston slides with anti-oil rubber gasket.
The control requires a 4-way solenoid valve (line - cylinder - discharge) for dual action pumps. The solenoid valve can also be
used 3 ways (plugging one of the outlets) for single acting pumps. The solenoid valve is supplied on request by Dropsa Spa.
It can also come with an electrical contact for the minimum level check.
The pump can be supplied without reservoir for applications on special reservoirs or reservoirs owned by the customer. Fitted
with plate with holes for lubricant entry with G½ UNI-ISO 228/1 threading.
3. PRODUCT IDENTIFICATION
A yellow is located on the front part of the pump that indicates the product code and the basic characteristics.
4. TECHNICAL CHARACTERISTICS
GENERAL TECHNICAL CHARACTERISTICS
CHARACTERISTIC U.M. VALUE
Operating temperature °C - [°F] -5 ÷ +80 - [+23 ÷ +176]
Storage temperature °C - [°F] -20 ÷ +50 - [-4 ÷ +122]
Operating relative humidity % 90
Flow rate
cm³/stroke
[cu.in./stroke]
0.5 ÷ 2
[0.17 ÷ 0.31]
Filling filter Type Metallic
Sound pressure level dB(A) <70
Lubricant outlet Thread Rp ¼ UNI-ISO – 7/1
Control oil inlet Thread G ¼ UNI ISO – 228/1
Control oil viscosity cSt - [SUS] 15 ÷ 100 - [77.31 ÷ 462.6]
Version WITH RESERVOIR for GREASE
Reservoir capacity kg - [lb] 2 ÷ 5 - [4.4 ÷ 11.2]
Lubricant grade NLGI 1 ÷ 2
Reservoir filling Thread G ½ UNI ISO – 228/1
Version WITHOUT RESERVOIR for OIL
Lubricant oil viscosity cSt - [SUS] 15 ÷ 2000 - [77.31 ÷ 9256]
Lubricant inlet Thread G ½ UNI ISO – 228/1
SINGLE ACTING versions
Compression ratio R 4.8:1
Control oil pressure bar - [psi] 30 ÷ 60 - [441 ÷ 882]
DUAL ACTING versions
Compression ratio R 1:1
Control oil pressure bar - [psi] 30 ÷ 150 - [441 ÷ 2205]
ATTENTION: Do not power the machine with pressure different than what is indicated on the label.