Helmer Scientific i.Series
®
Ultra-Low Freezer
Service and Maintenance Manual
360173-A/C
5
2
Installation and Configuration
2.1
Location Requirements
♦
Has a dedicated 15 A grounded circuit with dedicated single point receptacle meeting the electrical requirements listed on the product
specification label.
♦
Is clear of direct sunlight, high temperature sources, and heating and air conditioning vents.
♦
Minimum 8” (203 mm) above, and minimum 4” (102 mm) behind.
♦ Meets limits specified for ambient temperature and relative humidity.
2.2
Compressor Restraints
Note
When removing the compressor restraints from the low-stage compressor, approach
from the left side of the compressor to avoid damage to the copper tubing mounted
to the floor of the refrigeration compartment.
Remove Compressor Restraints
1. Using ½” socket and ½” open-end wrench, remove the hex bolt securing the compressor
restraint under the high-stage compressor. Set hex bolt, washer and hex nut aside for use
in installing rubber compressor foot (Qty.: 1 per compressor).
2. Lift compressor mounting plate slightly and slide restraint out.
3. Remove rubber compressor foot and metal spacer from accessories box.
4. Slide the compressor foot under the compressor mounting plate and align hole in the foot
with opening in the bottom of the freezer and mounting plate.
5. Insert metal spacer in the center of rubber compressor foot.
6. Insert hex bolt through bottom of freezer and up through compressor foot and
mounting plate.
7. Place washer and hex nut over the protruding hex bolt. Hand-thread hex nut.
8. Secure using torque wrench, and tighten to 78.8 in-lbs.
9. Repeat steps 1 – 8 for low-stage compressor.
10. Place rear panel over refrigeration compartment and align holes in panel with threaded
holes in freezer.
11. Hand thread screws and tighten using #2 Phillips screwdriver .
2.3 Placement and Leveling
Notes
• To prevent tipping, ensure door is closed and latched, and casters are unlocked and free of debris before moving freezer.
• The freezer is extremely heavy. Helmer recommends two people work together to move the freezer.
1. Ensure all casters are unlocked and door is closed and latched.
2. Roll freezer into place and lock casters.
3. Adjust leveling feet as necessary to ensure freezer is level.
4. Connect AC power cord to a grounded outlet meeting the electrical requirements.
Level the Unit
1. Set a bubble level on top of freezer cabinet. Orient the level front-to-back.
2. Using a 9/16” open-end wrench, back the jam nut away from the weld nut.
3.
Hand-thread the leveling legs downward until they make contact with the floor.
4.
Using a 5/8” open-end wrench, rotate the leveling legs downward until the front casters touch the floor.
5.
Check the bubble level to ensure the freezer is parallel to the floor (front to back), or angled slightly back from vertical.
6.
Check the leveling legs and rear casters to ensure the freezer contacts the floor at four points. Adjust both leveling legs as
necessary to achieve four contact points.
7. Hand-thread the jam nuts upward until they make contact with the weld nut.
8. Place a 5/8” open-end wrench on the leveling legs to prevent them from rotating while the jam nut is tightened. Using a 9/16”
open-end wrench, snug the jam nuts against the weld nuts.
Compressor restraint
Rubber foot with spacer
Rubber foot installed
Rear panel
