Den-Sin MERMAID E1100-I, User Manual & Spare Parts Manual

Page: 7 / 55

1. Getting acquainted with your Water Blaster
MERMAID E1100-I STD00
Page 6 of 54
High Pressure Machine Schematic Diagram Mermaid E800
Symbol Description Symbol Description
F1 Filter 1- Incoming PG1 Pressure Gauge Low Pressure
FV Float Valve SV Safety Valve
LS Level Sensor MP Main Pump
BP Booster Pump PG2 Pressure Gauge High Pressure
F2 Filter 2 TG 1 Trigger Gun (Dump Type)
Remarks:

SV : - SV(Safety Valve) is set at factory about 20~30Bar more than PG 2(Pressure
Gauge)

TG 1: - TG(Trigger Gun –Dump) is normally open, pressurize when trigger is pressed.
SV- Safety Valve Operation
Safety valve is a system to protect the machine from over pressure. Over pressure occurs
when nozzle size is wrong or the nozzle is chocked. Another possible cause is the unloader
setting is wrongly set. When machine is over pressurized, the safety valve will start to open
and excess water is dumped. The setting of the safety valve system is factory set, do not try
to reset them.
MP
F
Water
IN
B
P
F
80L
Water Tank
FV
LS
PG 1
F 1
F 2
SV
PG 2
TG 1
Signal Out
BP
L.P Dump
CAUTION
Machine is manufactured with factory preset settings for its Unloader and
Safety valves. Please do not try to change these setting. Adjusting the setting
will affect the machine performance or machine become unstable. A trained
personal is required to change the settings if necessary.