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1. General 

Use 

The MCP650 pump is a magnetically driven 
centrifugal pump featuring a 12 V DC motor.  It 
requires no maintenance when used with de-
mineralized water and the appropriate anti-fungal 
additives. We recommend using 5% Swiftech’s 
HydrX

 as an additive. The pump is designed to be 

connected to your computer power supply using the 
standard Molex 4 pin connectors. 
The MCP650 pump is not submersible. 

2. Physical 

installation 

 

Determine the best location for your pump by 
observing how the tubing will be routed to the 
rest of the circuit. Sharp bends in the tubing 
should always be avoided to prevent kinks, which 
will reduce or completely prevent flow of the 
cooling fluid. 

 

In general, we recommend installation of the 
pump at the bottom of the chassis. 

 

The base of the pump features a soft neoprene 
pad coated with strong adhesive material. Once 
an appropriate location for the pump has been 
determined, simply peel-off the pad’s protective 
paper, and press the pump against the chassis 
surface. The surface should be clean, and non 
greasy. Thru-bolts are also provided for 
permanent installation, and require drilling holes 
in the chassis (see permanent installation page 
2). 

3. 

Pump operating precautions: 

 

The MCP650 pump should never be run dry, even 
for a quick test

. You should always prime the pump 

with fluid before you start operating it (see warranty 
note *). 
 

Use of coloring die or fluorescent additives

 

containing particulate fillers will cause excessive wear 
to the pump’s impeller bearing (see warranty note **). 

 

 

Do not utilize small diameter or flow restrictive fittings in the pump inlet line. Minimum line inner diameter is 3/8”.

 

An example would be a 

reservoir with ¼” fittings. This will cause the pump impeller to cavitate, lose prime, stop pumping and damage the pump (see warranty note ***).

 

 
Connecting the pump to the circuit: 

The pump’s inlet and outlet are ½” in outside diameter.  An optional adapter kit 
is available to connect the MCP650 to a circuit using ½” ODx3/8”ID tubing. This 
kit consists in: 

 

1 foot

 

supply of ¾”ODx½”ID tubing and two reducers to make 

the transition to the ½”ODx3/8”ID circuit. 
TIP: when connecting the MCP650 pump to a ½”ODx3/8”ID circuit, always use 
the longest possible ¾”ODx½”ID tube section at the inlet. 

 

 

 

Rouchon Industries, Inc., dbA Swiftech™ – 1703 E. 28

th

 St, signal Hill, CA 90755, USA – T (562) 595-8009 – F (562) 595-8769 – All content Copyright 

Swiftech 2004 – Last edited 7-26-04 – Subject to revision without notice

 

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