13
RAU-SVX01B-E4
Operation
Control System
The control is through the SMM
control module.
Unit operations
- Start up unit pushing button”I” of
the SMM control module. The
compressors will start up if the
discharge air temperature is above
the SMM control module setpoint.
Weekly start up
- Push button”I” of the module to
allow unit operation.
Week end shutdown
- If the unit needs to be shut down
for a short period of time, push
button ”O” of the module.
- If the unit is shut down for a
longer period, see under
”Seasonal shutdown”, below.
- Insure that all safeties are taken to
protect the compressor against
refrigerant migration.
- Do not put the general and
control disconnect switches to
off.
Seasonal shutdown
- Carry out leak test.
- Carry out oil analysis
- Record operating pressures,
temperatures, amperages and
voltage.
- Check operation of machines/
compare conditions of operation
against original commissioning
data.
- Push button”O” of the module.
- Insure that all safeties are taken to
protect the compressor against
refrigerant migration.
- Fill out the visit log sheet and
review with the operator.
- Do not put the general and
control disconnect switches to
off.
Seasonal start-up
- Check operational set points and
performance.
- Calibrate controls.
- Check operation of all safety
devices.
- Inspect contacts & tighten
terminals.
- Megger the motor compressor
windings.
- Record operating pressures,
temperatures, amperages and
voltage.
- Carry out leak test.
- Check configuration of unit control
module.
- Change the oil as required based
upon results of the oil analysis
made during seasonal shutdown
- Check operation of machines/
compare conditions of operation
against original commissioning
data.
- Fill out the visit log sheet and
review with the operator
Summary of Contents for RAU-SVX01B-E4
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