The gas ballast system of the scroll pump is suitable for being connected to a gas external supply. Cou-
plings for the G 1/8" connection from the Pfeiffer Vacuum accessories range are available for this pur-
pose.
Required tools
● Wrench,
WAF 13
● Calibrated torque wrench (tightening factor ≤ 1.6)
1
2
3
4
5
6
Fig. 8:
Connecting gas ballast external supply
1 Sinter filter
4
Gas ballast connection opening
2 Gas ballast valve
5
External gas supply line
3 Example of connecting coupling
6
External gas supply
Connecting gas supply
1. Turn the gas ballast valve to position “0”.
2. Unscrew the sinter filter the from valve housing.
3. Screw a connecting coupling with sealing ring into the G 1/8" filter bore.
– Tightening torque:
2.5 Nm
.
4. Connect an external supply with nitrogen (N
2
) or another dry, inert gas to the coupling.
5. With the gas supply, observe the maximum permissible inlet pressure.
6. Briefly open the gas ballast valve by turning the selector switch to position “1”.
– Letting in inert gas removes any particles from the inlet area of the gas ballast valve.
5.5 Connecting to mains power supply
DANGER
Danger to life from electric shock
Inadequate or incorrect grounding of the unit leads to contact-sensitive voltage on the housing. When
making contact, increased leakage currents will cause a life-threatening electric shock.
► Before the installation, check that the connection leads are voltage-free.
► Conduct the electrical connection in accordance with locally applicable regulations.
► Make sure that the local mains voltage and frequency match rating plate specifications.
► Make sure that the mains cable and extension cable meet the requirements for double isolation
between input voltage and output voltage, in accordance with IEC 61010 and IEC 60950.
► Use only a 3-pin mains cable and extension cable with properly connected protective earthing
(earthed conductor).
► Plug the mains plug into a socket with earthing contact only.
► Always connect the mains cable prior to all other cables, to ensure continuous protective earth-
ing.
Installation
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Summary of Contents for HISCROLL 12
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