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

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3. Maintenance and troubleshooting
MERMAID E1100-I STD00
Page 19 of 54
3. Maintenance and troubleshooting
Maintenance Schedule
Regular Service
Period as indicated Each
use 1
st
50hr
s
Every
month /
Every
500hrs When
needed Procedure / Remarks
Check pump oil
level

Top up if necessary.
Change pump oil
Recommended
Oil :
ISO VG 220
or SAE 90
Usage :
Approx. 3.5litres
of oil
Renewal of oil:

Turn off High Pressure Cleaner.

Loosen bolt (Hex) at bottom of pump
housing.

Drain oil into a waste oil-tray.

Tighten bolt(Hex)

Add oil through pump inlet on top of the
pump until the red point of the oil control
glass has been reached.
Note:
Do not dispose used oil into drain. Always
pour the used oil into recycle container or
plastic bag with “Waste oil” labeled.
Contact recycles company to collect the
waste oil for proper dispose.
Always let the pump cool before service
Check water-filter
inside the water-
tank

Clean or replace with new filter
Check water inlet
filter

Clean or replace with new filter
Check booster
pump filter

Clean or replace with new filter
Check for air-
bubbles inside
hose, pump

If bubbles found inside hose , tighten the
hose clamps

Loosen screw of booster pump filter to
let out air trapped inside booster pump
filter

Run the machine without depress trigger
for a few minutes to purge out air
bubbles
Check booster
pump pressure
Gauge;
(Range 5-6bar) Booster pump filter is clog or dirty.
Pump needs min. booster pressure of 4-
5bar.

Replace or clean the filter
Cleaning of motor
fan ( to ensure
sufficient airflow )

Clean the motor fan cover.

Clean the motor fan blade.
Do NOT operate the machine with
damaged or fan cover removed!