BOC Edwards 212-J, Instructions Manual

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J SERIES M ICROV A C J SERIES M ICROV A C
 
V A CU U M PU M P V A CU U M PU M P
PA GE 2 -4
2 .5 2 .5 Cooling Cooling
2.5.1 The Stokes M icrovac pump is w ater cooled and must be connected to a
w ater supply.
2.5.2 The 1/2" w ater inlet connection is located in the pump housing on the drive side
near the bottom. See Figure 7.
2.5.3 Insert a valve in the w ater inlet line and regulate the w ater flow so that the
temperature of the oil in the reservoir is betw een 140 Deg. and 160 Deg. F. (60 - 71
Deg. C) Oil temperature kits are available that automatically control the w ater flow
to maintain the proper oil temperature (Contact Stokes Vacuum for specifications).
If pump is outside and subjected to freezing temperatures, the w ater tank and
circulating pump should be installed w ith anti-freeze in the w ater.
CA U TION : CA U TION : DO NOT START THE PUM P WHEN O DO NOT START THE PUM P WHEN OIL TEM PERATURE IS BELOW 55 IL TEM PERATURE IS BELOW 55 o o F. (13 F. (13 o o C) C)
2.5.4 The 1/2" w ater outlet is located in the pump housing on the opposite side of the
w ater inlet. See Figure 7.
2.5.5 The w ater outlet SHOULD
SHOULD be connected to an open drain to permit the operator to
check the flow and temperature of the outlet w ater periodically. There SHOULD SHOULD
NOT NOT be a valve or back pressure in the drain line. In some cases, cooling w ater
must be discharged to a pressure drain. In such cases, discharge pressure must
not exceed 35 P.S.I.G. and no block valve should be placed in discharge line unless
a 35 lb. relief valve is provided to protect pump from high inlet pressure.
N OTE: N OTE: If condensables are present in gas being pumped and gas ballast is used, throttle If condensables are present in gas being pumped and gas ballast is used, throttle the the
cooling w ater to raise operating temperature to the level for gas ballast (See Sect. 3) cooling w ater to raise operating temperature to the level for gas ballast (See Sect. 3)
2 .6 2 .6 Lubricat ion of Pum p Lubricat ion of Pum p
The successful operation of this pump depends largely on the type of oil used. An initial charge of oil is included
w ith each pump. This standard oil is Stokes V-Lube (Label F) w hich is recommended for general operating
conditions in a relatively clean environment. The oil is a multigrade petroleum oil, fortified for oxidation
FIGU RE 5 A WIRIN G D IA GRA M FIGU RE 5 A WIRIN G D IA GRA M