Den-Sin Merlion Plus E500 Guide

www.densin.com
USER GUIDE & SPARE PARTS MANUAL
Electrical Powered
Heavy Duty Cold Water High
HIGH PRESSURE CLEANER
Original Instruction
Merlion Plus
E500

INTRODUCTION
MERLION PLUS - E500 STD04 Page 1 of 50
Disclaimers
Den-Sin reserves the right to change specifications and to improve our products without notice or
obligation.
All Rights Reserved
This document or part of it may not be photocopied, or in any other way reproduced, or translated to other
languages without the prior written consent of DEN-SIN.
Warning
Read this user manual before you start up your Heavy Duty Pressure Washer for the first time.
This Heavy Duty Pressure Washer producing water jet under high-pressure, which is why severe injuries
can occur if the safety precautions are not observed.
Therefore a full understanding of the contents of this instruction manual is required, in order to prevent
injuries to you, objects and persons nearby.
Safety
The following symbols are used in this manual to indicate procedures that if not followed, may results in
personal injuries or damage to equipment.
WARNING
is used to alert the reader of procedures or practice which if not
followed correctly could result in personal injuries.
CAUTION
is used to alert the reader of procedures or practice which if not
followed correctly could result in damage to machine or other equipment.
NOTE
is used to highlight important information that may assist the reader
carrying out the procedure or understanding the text.
EAR PROTECTION
is used to caution of high noise machine level. User
must wear ear plug or ear muffler. High noise level will damage user hearing.
HOT SURFACE
is used to caution user of hot surface that may cause injuries.
Any maintenance work to be done after the surfaces had cool down.
WARNING
CAUTION
NOTE

INTRODUCTION
MERLION PLUS - E500 STD04 Page 2 of 50
INTRODUCTION............................................................................................................................1
1. Getting acquainted with your Heavy Duty Pressure Washer ................................................2
OPERATIONAL INFORMATION .................................................................................................3
MACHINE DIMENSION................................................................................................................5
High Pressure Machine Schematic Diagram....................................................................................6
Marking & Indication.......................................................................................................................7
Machine Highlights ..........................................................................................................................8
HIGH PRESSURE MACHINE LOCKOUT/TAGOUT PROCEDURE .........................................8
2. Safety and protection information..........................................................................................13
General safety.................................................................................................................................13
WARNING.....................................................................................................................................14
Safety devices.................................................................................................................................15
Transporting the machine...............................................................................................................15
Safety PPE......................................................................................................................................17
Operations ......................................................................................................................................18
Application Guidelines...................................................................................................................18
3. Maintenance and troubleshooting ..........................................................................................19
Maintenance Schedule....................................................................................................................19
Troubleshooting..............................................................................................................................21
Pump Service Instructions..............................................................................................................22
Torque Specification ......................................................................................................................24
4. Machine Spare Parts Lists.......................................................................................................25
Motor/Pump Assembly Spare-Parts List........................................................................................26
Water Tank Assembly Spare-Parts List .........................................................................................27
Filter Assembly Spare-Parts List....................................................................................................28
E500 Pump Assembly Spare-Parts List..........................................................................................29
E500 Trigger Gun / lance & hose assembly...................................................................................37
4. Electrical Assembly ..................................................................................................................39
Wiring diagram...............................................................................................................................39
Main Contactor Overload Setting...................................................................................................40
Motor Switch Timer Setting...........................................................................................................40
5.Optional Rotating Nozzle..........................................................................................................44
E500 Bar Rotating Nozzle – Type 3 ..............................................................................................45
Operation & Use of Rotating Nozzle –E500..................................................................................48
Optional sand & slurry blasting kit E500.......................................................................................49
6. Warranty...................................................................................................................................50
Revison History:-
1. Getting acquainted with your Heavy Duty Pressure Washer
Date Revision Rev. No.
03/08/2016 Added start-up issues and troubleshooting guide 01
19/04/2017 Updating 220V components 02
05/06/2017
Pump and Component Changeover and removal of CE declaration
03
25/09/2017
Manual Content U
pdating. Cable and Water Tank P/N update.
04
The information contained in this user guide is subject to change without notice.

Getting Acquainted with your Heavy Duty Pressure Washer
MERLION PLUS - E500 STD04 Page 3 of 50
The DEN-SIN Merlion Plus E500 facilitates cleaning in less time at high performance. The compact
design enables the machines to be agile within tight/ narrow places, and the high performance gives you the
opportunity to solve an array of cleaning tasks. With built in water tank, machine now works even more
efficient and reliable.
All pump parts, fittings and pipes in contact with water are made of non-corrosive materials. Together with
the ceramic pistons, long life seals and stainless steel valves, it ensures long life and high durability.
Applications
These Heavy Duty Pressure Washers are capable of removing any kind of dirt:
•Algae off concrete constructions
•Paint and graffiti off walls
•Dust, dirt, soil & mud off floors
•Oil & grease off engines and other mechanical parts
•Rust, dirt, salt, scale and paint off ship decks
The Heavy Duty Pressure Washer can also be used for tasks such as:
•Surface preparation
•Concrete removal
And with the option of using different accessories, many more jobs can be dealt with:
•Sandblasting
•Drain-cleaning
•Extra-long / short lances for hard to reach places
•Rotating nozzle
This machine is only to be used for the purposes it is designed for. Any other use shall
be considered improper and therefore potentially dangerous. The manufacturer is NOT
to be held responsible for any damages caused by improper use.
Unpacking
Remove the Heavy Duty Pressure Washer and its accessories from the packing material. For transport and
packing reasons some accessories are supplied disassembled. Make sure all components are present:
Standard items:
CAUTION
Trigger Gun
Machine Manual
Nozzle
Machine
High Pressure Hose

Getting Acquainted with your Heavy Duty Pressure Washer
MERLION PLUS - E500 STD04 Page 4 of 50
1.1 OPERATIONAL INFORMATION
High Pressure Machine has IP55 rating. Parking the machine outdoor will not pose any damage to
the machine. Ensure that the ventilation to the motor must not be blocked. During operation, the
machine must not park at an incline angle of 10deg. The machine will become unstable and may
endanger user. When hose is pull up to a high, pressure will drop due to gravity.
This machine is designed to deliver clean water or non-aggressive water. Using any other water
source or sea water will damage the pump unless authorized in writing by Den-Sin.
Prior to beginning work, all equipment must be inspected to ensure that it is in safe working
condition. Inspection shall include verifying the integrity of hoses and connections, tips, lances.
Personal protective equipment must be worn.
Prior to commencing any water blasting work, the area must be barricaded to restrict unauthorized
access.
We recommend to practice to employ 2 operators* blasting method. The role of the 2
nd
operator is
to attend the pump unit keep close watch on the 1
st
operator for tiredness. Therefore, the operators
can take turns to operate the machine.
∗Operators must be trained on how to operate the machine (DENSIN) and the basic blasting
protocol before allow to use the machine.
How to prepare machine for usage
Correct way of holding the trigger gun for blasting due to the recoil force from the
trigger gun.
Understand how to operate the machine correctly.
Basic Maintenance and Troubleshooting.
** Den-Sin Training program is available upon request. Please contact us for more details **
IMPORTANT that user read the manual guide to understand the operation of the
machine before usage.
NOTE