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7.2 Periodic checks
Periodic checks are required in addition to daily checks to maintain performance of the unit for long use.
The periodic checks include careful inspection to details, such as cleaning and inspection of inside of the unit.
• The following work must be performed by educated and/or skilled persons.
• Before doing any check, make sure to turn off power at the power box and this unit
unless it is necessary.
• If it is necessary to remove any panel (such aas top panel) of this unit provide fence or
the like around the unit to prevent any person to get close to it.
• Prior to filling or emptying the coolant water, make sure that the water is cooled down.
• Prior to performing maintenance and inspection work, make sure that the water is cooled
down.
IMPORTANT
IMPORTANT
a
Frequency
1 - 4 times a month
Every year or
Every 2000 hours.
Every 2.5 years. or
Every 5000 hours.
a."Frequency" in the table are set with safety in mind. However, shorter frequency is recommended in case
that opera-
Touching any live electrical parts can cause fatal electric shocks or
severe burns.
The coolant becomes very HOT while operating.
Make sure to cool down the water before handling.
When "WATER INLET" or "WATER OUTLET" hose is disconnected,
put the cap provided for each to the port promptly to prevent water leak from the unit.
Use only neutral cleansers to clean plastic parts，otherwise parts of the plastic
may melt or be deformed.
Check points
Around tank: Check for water leakage.
Coolant (in case of using PANA COOLANT):
Replace with a new one.
Interior and Exterior:
Check hoses for deterioration.
Check connections for tightness.
Check screws for tightness.
Cleaning.
Withstand voltage test
Insulation resistance test
Mechanical seal, bearing and pump:
Check pump mechanical shaft seal for leakage.
Check bearings for abnormal rotation.
When the mechanical shaft seal of the pump
leaks liquid or the bearing rotates
abnormally,replace with a new pump.
Cooling fan: Replace with a new one.
Withstand voltage test
Insulation resistance test
12
Note
Open the front panel to check.
/
<Cleaning>
In case of air cleaning, use dry
air only.
Check especially for
deterioration of motor
Contact sales distributor or
Panasonic representatives.
/
Check especially for
deterioration of motor
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