Parker Zander WVM 1080, Operating Manual

Page: 31 / 56

EN | Operating manual Start-up
WVM 40 -1450 31
Vessel pressure gauge
On both vessels, pressure gauges are fi tted which show the operating overpressure. The
operating overpressure indicates the operating phase of the relevant vessel:
◊ During adsorption the pressure gauge should indicate the nominal operating overpressure.
◊ During regeneration the indication of the pressure gauge on the regenerating vessel
— must drop from the operating gauge pressure to < 0.5 bar gauge pressure during the
expansion phase,
— must indicate a vacuum of 50 – 100 mbar during the drying phase.
◊ During the pressure build-up phase the indication on the pressure gauge should again rise
to operating overpressure level (both vessel gauges indicate the same operating pressure).
Commissioning of the dryer
Risk of injury from escaping hot regeneration gas!
Hot humid air might escape from the the regeneration gas outlet at the vacuum
pump. Therefore, keep clear of the blow-off outlet during operation of the unit.
Risk of injury from crushing!
During the switching from adsorption to regeneration, there is a risk of injury
from crushing at the universal shaft and the drives. During switching, stay clear
of these components!
Risk of injury from hot surfaces!
During operation, certain surfaces of the dryer are heated to temperatures of
over 120 °C. At insulated dryers, screw connections might protrude from the
insulation. Do not touch hot surfaces. Allow surfaces to cool before you carry
out any work at the dryer.
Risk of injury from suddenly escaping gas!
While the unit is under pressure, never remove any components or otherwise
interfere with the dryer! Suddenly escaping gases can lead to serious injury!
Prior to any work, release all pressure from the unit.
◊ Operate the dryer only within the permitted limits. Operation of the dryer under conditions
for which it is not designed may lead to malfunctions.
◊ On no account should the factory settings of the control programme and the frequency
converter be altered without consulting the manufacturer.
◊ The higher the capacity of the dryer, the more noise it produces during operation. The oper-
ator must therefore provide suitable protective equipment (e.g. earmuffs).
◊ Depending on the size of the dryer, the compressed air network and the respective legal
requirements in your country, it may be necessary to perform initialisation according to the
directive for pressure equipment.
◊ Check the dryer for visible damage and faults at regular intervals. Immediately report
changes, also those regarding operational behaviour, to the institution or person in charge.
In the event of an emergency or if safety-relevant malfunctions are observed, immediately
switch off the dryer. The dryer may only be restarted after the malfunction has been eliminat-
ed.