Maintenance - List Of The Recommended Periodic Interventions - AERMEC WRL Series Manual

Reversible / chiller - heat pumps water/water

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Table of Contents

MAINTENANCE - LIST OF THE RECOMMENDED PERIODIC INTERVENTIONS

11.

MAINTENANCE - LIST OF THE RECOMMENDED PERIODIC INTERVENTIONS

DESCRIPTION

Check of any refrigerant leaks (this must be done respecti ng the deadlines recommended

by the current European regulati ons)

Check of the unit power supply voltage

Check of any refrigerant leaks (this must be done respecti ng the deadlines recommended

Check of the compressors' power supply voltage

by the current European regulati ons)

Check of the fan power supply voltage

Check of the unit power supply voltage

Check of the solenoid valves

Check of the compressors' power supply voltage

Functi oning and calibrati on check of the pressure switches, if and where present

Check of the fan power supply voltage

Replacement of the safety valve

Check of the solenoid valves

Check and reading of the pressure/temperature probes

Functi oning and calibrati on check of the pressure switches, if and where present

Check and possible replacement of the dehydrati ng fans

Replacement of the safety valve

Check of compressors contactors

Check and reading of the pressure/temperature probes

Check of fans contactors, where present

Check and possible replacement of the dehydrati ng fans

Exchanger coils cleaning

Check of compressors contactors

Check and cleaning of shell and tube heat exchangers if necessary where present

Check of fans contactors, where present

Check of electric resistances of the heat exchangers

Exchanger coils cleaning

Check and cleaning of shell and tube heat exchangers if necessary where present

Check for rust and corrosion in components, paying parti cular att enti on to under pressure

Check of electric resistances of the heat exchangers

containers. In this case replace them of intervene with speciﬁ c products

Check for rust and corrosion in components, paying parti cular att enti on to under pressure

General cleaning of the unit

containers. In this case replace them of intervene with speciﬁ c products

Bleed the hydraulic circuit and the heat exchangers, the simultaneous presence of air and

water reduces yield and can beneﬁ t the arising of rust

General cleaning of the unit

Bleed the hydraulic circuit and the heat exchangers, the simultaneous presence of air and

water reduces yield and can beneﬁ t the arising of rust

Overheati ng temperature measurement

Subcooling temperature measurement

Exhaust gas temperature measurement

Overheati ng temperature measurement

Fans absorpti on measurement

Subcooling temperature measurement

Compressors absorpti on measurement

Exhaust gas temperature measurement

Fans absorpti on measurement

Compressors absorpti on measurement

Check oil level

Check oil acidity

Check the proper functi oning of the casing resistance

Check oil level

Check oil level sensor, if any

Check oil acidity

Check the proper functi oning of the casing resistance

Check oil level sensor, if any

Pumps absorpti on measurement

Check the pump rotor gasket

Check the ﬂ exible joints

Pumps absorpti on measurement

Check the seal of the shell and tube heat exchanger heads, where present

Check the pump rotor gasket

Check the proper functi oning and calibrati on of the ﬂ ow switch, where present

Check the ﬂ exible joints

Check the proper functi oning of the diﬀ erenti al pressure switch, where present

Check the seal of the shell and tube heat exchanger heads, where present

Check the concentrati on of glycol soluti on, if provided

Check the proper functi oning and calibrati on of the ﬂ ow switch, where present

Cleaning the water ﬁ lter

Check the proper functi oning of the diﬀ erenti al pressure switch, where present

Check the concentrati on of glycol soluti on, if provided

Cleaning the water ﬁ lter

* To replace the glycol, refer to the documentati on provided by the supplier.

The frequency of the operati ons described herein is a guideline one and they may vary depending on how the unit is used and the type of system where it

is installed. However, if the unit is installed in harsh environments, we recommend reducing the ti me of interventi on

The frequency of the operati ons described herein is a guideline one and they may vary depending on how the unit is used and the type of system where it

is installed. However, if the unit is installed in harsh environments, we recommend reducing the ti me of interventi on

1 we do not recommend swabbing as it can ruin the inner lining of the pipes, we recommend using appropriate chemicals

IWRLI2. 1810. 4900577_05

RECOMMENDED PERIODIC MAINTENANCE INTERVENTIONS

GENERAL INTERVENTIONS

INTERVENTIONS TO COOLING CIRCUIT Functioning at full load

COMPRESSOR CHECKS

CHECKS ON HYDRAULIC CIRCUIT

FREQUENCY

3/4

months

FREQUENCY