VACUUBRAND MD 1C VARIO-SP - Manual (Page 21)

page 21 of 87
board raises above 158°F (70°C). At temperatures above
185°F (85°C) the pump switches off. In case of a motor
blockage (after 10 start-up attempts) the pump switches
off.
Note: Only manual reset is possible. Disconnect the pump
from the power source. Identify and eliminate the cause of
failure.
Maintenance and repair
In order to comply with laws (occupational, health and
safety regulations, safety at work law and regulations for
environmental protection) vacuum pumps, components
and measuring instruments can only be returned when
certain procedures (see section „Notes on return to the
factory“, pg. 80) are followed.
Take advantage of our service seminars, which put special
focus on the maintenance and repair of vacuum pumps.
For details and for the online ”Instructions for repair” man-
ual see www.vacuubrand.com.
In normal use, the lifetime of the diaphragms and valves
is typically 15,000 operating hours. Bearings have a typi-
cal durability of 40000 h. Motor capacitors have a typi-
cal durability in the range of 10000 to 40000 h depending
strongly on operation conditions including ambient tem-
perature, humidity or load.
➨
Ensure that the pump cannot be operated acciden-
tally. Never operate the pump if covers or other
parts of the pump are disassembled.
➨
Switch off the pump. Disconnect the electrical
power cord and wait five seconds before starting
maintenance to allow the capacitors to discharge.
➨
Note: The pump may be contaminated with process
chemicals, which have been pumped during operation.
NOTICE