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Installation
5.3.5
Exhaust silencer installation
If the exhaust air connection pipe of the liquefied gas pump is not installed sepa-
rately, the enclosed exhaust air silencer must be installed at the corresponding
port.
5.4
Commissioning
5.4.1
Prerequisites for commissioning
Observe the manual and general drawing of the product.
In addition, the following conditions must be met:
–
The product must be free of damage.
–
The product must be securely attached.
–
The equipment-specific stall pressure has been calculated.
–
The connections must be installed correctly.
–
Connecting cables/pipes must be free from damage.
–
The bleed ports must be unobstructed or connected to leakage lines.
Risk of injury posed by improper installation of the liquefied gas pump!
Improper installation of the liquefied gas pump can lead to accidents resulting in
severe or fatal injuries.
► The stall pressure of the pump, which depends on the system parameters,
must not exceed the maximum permitted operating pressure.
► The stall pressure, which depends on the system parameters, must be calcu-
lated before commissioning.
► Secure system accordingly, if necessary.
Prior to commissioning the pump, the system-specific stall pressure must be cal-
culated. The stall pressure of the pump is calculated for the respective pump type
using the following formula:
Design of the liquefied gas pump
Single-stage, double-acting
Two-stage
Tab. 5-1 Calculation of the stall pressure
Legend:
p
= drive pressure
L
p
= operating pressure
B
p
= primary gas pressure
A
i
= pressure ratio for stage 1
1
i
= pressure ratio for stage 2
2
25
WARNING
Stall pressure
p
= i * p
+ p
B
L
A
p
= i
* p
+ i
/i
* p
B
2
L
2
1
0000000383 - 001 - EN
A
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