Pre-installation Checklist
1. Confirm you have the right pump
Read the pump nameplate to make sure it is the one you ordered.
CR — Centrifugal pump with standard cast iron and 304 stainless steel construction
CRI or CRX — Centrifugal pump; all parts in contact with water are 304 stainless steel construction
CRN — Centrifugal pump; all parts in contact with water are 316 stainless steel construction
CRT — Centrifugal pump; all parts in contact with water are titanium construction
CRE — Centrifugal pump with a Grundfos MLE VFD motor attached
2. Check the condition of the pump
The shipping carton your pump came in is specially designed around your pump during production to prevent damage. As a
precaution, the pump should remain in the carton until you are ready to install it. Examine the pump for any damage that may have
occurred during shipping. Examine any other parts of the shipment as well for any visible damage.
If the pump is shipped as a complete unit (motor attached to pump end), the position of the coupling (that connects the pump shaft
to the motor shaft) is set at factory specifications. No adjustment is required. If the unit is delivered as a pump end only, follow the
adjustment procedures on pages 10-11.
Pump without Motor (CR(I)(N) 1s, 1, 3, 5, 10, 15, and 20 Only): If you purchased a pump without a motor, the shaft seal has been set by
the factory. Do not loosen the three set screws on the shaft seal when attaching the motor.
Pump without Motor (CR(N) 32, 45, 64 & 90 Only): If you purchased a pump without a motor, you must install the seal. The seal is pro-
tected in its own sub boxing within the pump packaging crate. To protect the shaft and bearings during shipment, a shaft holder pro-
tective device is used. This device must be removed prior to installation of the seal. Read the seal installation instructions which are
included in the pump package.
3. Verify electrical requirements
Verification of the electrical supply should be made to be certain the voltage, phase and frequency match that of the pump motor. The
proper operating voltage and other electrical information can be found on the motor nameplate. These motors are designed to run on
±10% of the nameplate-rated voltage. For dual-voltage motors, the motor should be internally connected to operate on the voltage
closest to the 10% rating, i.e., a 208 voltage motor wired per the 208 volt connection diagram. The wiring connection
diagram can be found on either a plate attached to the motor or on a diagram inside the terminal box cover. If voltage variations are
larger than ±10%, do not operate the pump.
4. Is the application correct for this pump?
Compare the pump's nameplate data or its performance curve with the application in which you plan to install it. Will it perform the
way you want it to perform? Also, make sure the application falls within the following limits:
Type Designed to pump...
CR Hot and chilled water, boiler feed, condensate return, glycols and solar thermal fluids.
CRI/CRN/CRX Deionized, demineralized and distilled water. Brackish water and other liquids unsuitable for
contact with iron or copper alloys. (Consult manufacturer for specific liquid compatibilities.)
CRN-SF High pressure washdown, reverse osmosis, or other high pressure applications.
CRT Salt water, chloride based fluids and fluids approved for titanium.
Operating Conditions
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CR(I)(N) 1s, 3, 5, 10, 15, and 20 -4 to +248°F (-20 to +120°C)
*CR(N) 32, 45, 64, and 90 -22 TO +248°F (-30 TO +120°C)
CR(N)(X)(T) 2, 4, 8, 16 -4 to +248°F (-20 to +120°C)
CRN-SF -4 to +221°F (-15 to +105°C)
with Cool-Top™ up to +356°F (+180°C)
All motors are designed for continuous duty in +104°F (+40°C) ambient air conditions. For higher ambient temperature conditions
consult Grundfos.
* xUBE Shaft Seals are recommended for temperatures above +200°F. Pumps with hybrid shaft seals can only operate up to
+200°F (+90°C). Pumps with xUUE shaft seals can be operated down to -40°F (-40°C) (where “x” is the seal type).
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LCPTL003_CR I&O_Rev0104.qxd 1/26/2004 11:58 AM Page 3
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