VACUUBRAND MZ 4C - Manual (Page 14)

Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check
carefully the validity of this document with respect to his product. Manual-no.: 997999 / 24/04/2008
page 14 of 28
Shutdown:
Short-term:
Has the pump been exposed to condensate?
☞ Allow the pump to continue to run at atmospheric pressure for a few minutes.
Has the pump been exposed to media which may damage the pump materials or forms
deposits?
☞ Check and clean pump heads if necessary.
Long-term:
➨ Take measures as described in section short-term shutdown.
➨ Separate pump from the apparatus.
➨ Drain catchpots.
➨ Close inlet and outlet port (e. g. with transport caps).
➨ Store the pump in dry conditions.
In case of low boiling solvents when the formation of condensate is unlikely, the use of
gas ballast might be unnecessary.
☞ Operating the pump without gas ballast increases the solvent recovery rates at the
exhaust waste vapour condenser.
In case of condensation:
➨ Check liquid level in both catchpots during operation. Avoid overflowing of the catch-
pots.
☞ Do not overfill the catchpots. Maximum liquid level approx. 80%, to avoid problems
when removing the catchpots.
➨ Check liquid level in both catchpots regularely and drain catchpots in time.
Removing the catchpots:
Catchpot at outlet:
➨ Remove joint clip, remove catchpot and drain condensate.
Catchpot at inlet:
➨ Admit air or inert gas (via inlet of pumping unit) to atmospheric pressure. Remove
joint clip, remove catchpot and drain condensate.
➨ Reassemble drained catchpots.
Important: Comply with regulations when disposing solvents/condensates. Reuse if
possible, purify if contaminated.
Attention: Notes concerning the operation of the exhaust waste vapour condenser
➨ Check hose connections prior to starting operation of the cooling system.
➨ Check coolant hoses regularly during operation.
☞ Ensure that the coolant outlet pipeline is always free and that it cannot get blocked.
☞ Maximum permissible coolant pressure at the exhaust waste vapour condenser:
6 bar (absolute)
☞ Comply with the maximum permissible coolant pressures of additional components
in the coolant circuit (e.g coolant valve).
☞ Avoid overpressure in the coolant circuit (e.g. caused by blocked or squeezed cool-
ant hoses).
☞ Permissible range of coolant temperature at the exhaust waste vapour condenser:
-15°C to +20°C
☞ The gas outlet (hose nozzle 10 mm) must not be blocked. The exhaust pipeline has
always to be free and pressureless to enable an unhindered discharge of gases.
☞ Connect the exhaust to a suitable treatment plant to prevent the discharge of dan-
gerous gases and vapours to the surrounding atmosphere.