molbloc-S is a registered trademark of
DH Instruments, Inc.
Document 560064B
040331
DH Instruments, Inc.
4765 East Beautiful Lane
Phoenix AZ 85044-5318
USA
Tel 602.431.9100
Fax 602.431.9559
www.dhinstruments.com
• In order to minimize the back-pressure applied to
the exhaust of the pump, plumbing should be as
short and as large in diameter as is practical, but
no smaller than the pump’s exhaust fitting size.
Inlet plumbing length and diameter should follow
the same guidelines in order to maximize the
efficiency of the vacuum pump. Restrictions in the
inlet plumbing will reduce the pumping speed of
the pump.
• In cyclic operations, such as flow meter calibrations
with molbloc-S, the pump should not be switched
off during cycles. Continue to run the pump with
the gas ballast valve open and the inlet port closed.
Power consumption is minimal when the pump is
operating at its ultimate pressure. Limit starting
the pump to no more than 5 or 6 times per hour.
DIMENSIONAL DATA, MM (IN)
Ø
INLET
NPT
Ø
EXHAUST
NPT
AMAX
WMAX
HMAX
X
Y
3/4 in.
3/4 in.
356
(14.0)
275
(10.8)
255
(10.0)
280
(11.0)
100
(3.9)
TECHNICAL DATA
Pumping Speed
25 cu m/hr, (14.7 cfm)
Average Noise Level
64 dB(A) (free field measurement at 1 m)
Main Voltage
110/115 (± 10 %) Volts AC (60 Hz),
1-Phase Supply
Motor Power
0.75 kW, (1.0 hp)
Nominal Speed
3 600 rpm
Weight w/Oil
27 kg, (59.6 lb)
Oil Capacity
0.5 l, (0.53 qt)
Inlet/Outlet Connection
3/4 in. female NPT
TOP VIEW
SIDE VIEW
Please read and understand the enclosed installation and operation manual, material safety data sheet and all
other enclosed data. Personal injury and/or property damage could result if this equipment is not installed and
operated properly. This system should be assembled and operated only by personnel who have been instructed in proper
safety practices.
