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English (US)
8.5 Procedure
1. Clean all grease fittings. If the motor does not have grease
fittings, the bearings are sealed and cannot be greased
externally.
2. If the motor is equipped with a grease outlet plug, remove it.
This will allow the old grease to be displaced by the new
grease.
3. If the motor is stopped, add the recommended amount of
grease. If the motor is to be greased while running, a slightly
greater quantity of grease will have to be added.
4. For motors equipped with a grease outlet plug, let the motor
run for 20 minutes before replacing the plug.
8.6 Dismantling, preparation and assembly of pump
Before dismantling the pump, check that the following is
available:
• A copy of these installation and operating instructions and the
manuals below.
• Correct tools:
– Extra set of O-rings
– Safety equipment (e.g. protective gloves and glasses)
according to the refrigerant and local regulations for service
of refrigeration equipment.
8.7 Spare parts and accessories
Grundfos offers an extensive parts list for each CR pump model.
A parts list typically covers the following items:
• a diagram of pump parts which we recommend to have on
hand for future maintenance
• a list of prepacked service kits covering the pump components
most likely to be exposed to wear over time
• complete chamber stacks needed to replace the rotating
assembly of each model.
These parts lists are available separately from the Grundfos
literature warehouse or as a set with extensive service
instructions in the Grundfos CR Service Manuals.
Fig. 13
Prepacked chamber stack kits
Fig. 14
Prepacked flange kits
Grundfos offers an extensive list of spare parts for CR pumps. For
a current list of these parts, see Grundfos All Product Spare
Parts/Service Kits Price List, part number L-SK-SL-002.
8.8 Contaminated products
The product will be classified as contaminated if it has been used
for a liquid which is injurious to health or toxic.
If you request Grundfos to service the product, contact Grundfos
with details about the liquid before returning the product for
service. Otherwise, Grundfos can refuse to accept the product for
service.
Any application for service must include details about the liquid.
Clean the product in the best possible way before you return it.
Costs of returning the product are to be paid by the customer.
CAUTION
To avoid damage to motor bearings, grease must be
kept free of dirt. For an extremely dirty environment,
contact Grundfos, the motor manufacturer or an
authorized service center for additional information.
Mixing dissimilar grease is not recommended.
If new grease does not appear at the shaft hole or
grease outlet plug, the outlet passage may be
blocked. At the next service interval, the bearings
must be repacked.
Add grease slowly taking approximately one minute
until new grease appears at the shaft hole in the end
plate or grease outlet plug.
Never add more than 1-1/2 times the amount of
grease shown in the lubrication schedule.
L-SM-DR-103
CRN-H 1s, 1, 3 / 5 Dismantling / Reassembly
L-SM-DR-102
CRN-H 10, 15 / 20 Dismantling / Reassembly
96752461
CRN MAGdrive Service Instructions
TM
05
92
72
36
13
T
M
04
39
16
16
09
WARNING
Minor or moderate personal injury
Flush the pump thoroughly with clean water and
rinse the pump parts in water after dismantling.
Summary of Contents for CRN-H MAGdrive
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