58
Flowserve US Inc.
SIHI
dry
dry
dry
dry
Standard
Standard
Standard
Standard M Series
Dry Running Vacuum Pump
Issue Date: November 21, 2016 Copyright:
FLOWSERVE SIHI Pumps Rev 1
9.6 Before Starting the SIHIdry
Vacuum Pump
Before switching on the following points need to be verified:
•
All pipelines are connected and the flanges are tight.
•
The measuring and safety devices are connected and adjusted.
•
The connection and the verification of the safety devices and equipment has to be done as
described in the respective operating instructions.
9.6.1
Purge Gas Control Unit [NFPA 496 – Purge Type Z/Y/X]
Switch on the purge gas supply. Check the
correct setting of the pressure reducer (45-90
PSIG) and possible leakages.
The purge gas module starts flushing the motor
compartment and the electronic unit.
Indicator [1] will switch from “red” into “green”
and indicator [2] will flash during the purge time
until is completed successfully.
This process may take several minutes
•
SIHI
dry
H250/400 approx. 5 min
•
SIHI
dry
H630/1000 approx. 10 min
and is indicated with a "green" display light to the
right [1] on the purge gas module.
After successful completion of the flushing
process, the contact [Pressure Switch] in the
purge gas module and the corresponding
component of the safety chain in the supply are
closed.
This status is indicated by the “green” display
light to the left [2] on the purge gas module.
Figure 20: Expo Purge Gas Control Unit
9.7 Initiation SIHIdry
into Operation
Commissioning
1. Note: The parameters set for reliable operation of the SIHIdry, e.g. limit values for temperature and
pressure, must not be modified without consultation with the manufacturer.
2. Inspection of the coolant - Is the filling height in accordance with the value on the data sheet?
3. If used, switch on the supply of compressed air, flushing gas and dry purging gas, check the adjustment
of the pressure reducer in the flushing gas supply line (see data sheet) and pay attention to possible
leakage.
4. Switch on the cooling water supply. Consider the required volumetric capacity of your pump (see data
sheet). Note: If the permitted coolant temperature or the pre-inlet temperature is exceeded you must
increase the flow rate of the cooling medium or reduce its temperature.
[2]
[1]
Summary of Contents for SIHI dry Standard H Series
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