Satety And Leakage Check; Test Running - Midea MSE18HRN1 Installation Manual

Safety and leakage check
Electrical safety check
Perform the electric safe check after completing installation:
1. Insulated resistance
The insulated resistance must be more than 2M .
2. Grounding work
After finishing grounding work, measure the grounding resistance by visual detection and
grounding resistance tester. Make sure the grounding resistance is less than 4 .
3. Electrical leakage check (performing during test running)
During test operation after finishing installation, the serviceman can use the electroprobe
and multimeter to perform the electrical leakage check. Turn off the unit immediately if
leakage happens. Check and find out the solution ways till the unit operate properly.
Gas leak check
1. Soap water method:
Apply a soap water or a liquid neutral detergent
on the indoor unit connection or outdoor unit
connections by a soft brush to check for leakage
of the connecting points of th piping. If bubbles
come out, the pipes have leakage.
2. Leak detector
Use the leak detector to check for leakage.
CAUTION
A: Lo packed valve B: Hi packed valve
C and D are ends of indoor unit connection.

Test running

1. Check that all tubing and wiring have been properly connected.
2. Check that the gas and liquid side service valves are fully open.
Perform test running after completing gas leak and electrical safety check.
The test running time should last more than 30 minutes.
1. Hold the panel sides and push it upward, then lift the panel up to an angle which
remains fixed. Do not lift the panel any further when it stops with a click sound.
2. Press the manual control button twice until the operating indicator lights up, the unit
will operate on Forced Cool mode.
3. Check if all the functions works well during test running. Especially check whether
the drainage of indoor unit is smooth or not.
4. Press the manual switch button again after finishing the test running. The operating
indicator turns dark and the unit stops operating.
AUTO/ COOL
Manual control
Button
Cover
Outdoor unit
check point
13
TEST RUNNING
Indoor unit
D C
check point
B A
Fig.25