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INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
This publication contains the installation, operation and maintenance instructions for the following corrosion resistant
FRP fans:
M.K. Plastics catalogs on the above corrosion resistant FRP fans, provides additional information describing the equipment, fan
performance, available accessories, and specifications.
For additional safety information, refer to AMCA publication 410-96, Safety Practices for Users and Installers of Industrial and
Commercial Fans.
For Information on special fan application requirements, contact M.K. Plastic's Corporate office at (514) 871-9999.
Receiving and Inspection
Carefully inspect the fan and accessories for any damage and shortage immediately upon receipt of the fan.
•
Turn the wheel by hand to ensure it turns freely and does not bind.
•
Inspect the dampers (if supplied) for free operation of all moving parts.
•
Record on the Delivery Receipt any visible sign of damage.
Handling
Lift the fan by the base or lifting lugs. Never lift by the shaft, motor or housing. See Fig. 1 – Fan Lifting Lug Details.
FRP Centrifugal & Inline Fans
• CNW
• DHK
• PVK
WARNING
This unit has rotating parts. Safety precautions
should be exercised at all times during installation,
operation, and maintenance.
ALWAYS disconnect power prior to working on fan.
Fig. 1 – Fan Lifting Lug Details
Bulletin 90- 01- NOV2002
• PRVS
• AXCL
1
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Related Manuals for M.K.Plastics CNW
Summary of Contents for M.K.Plastics CNW
- Page 1 Bulletin 90- 01- NOV2002 FRP Centrifugal & Inline Fans INSTALLATION, OPERATION, AND MAINTENANCE MANUAL This publication contains the installation, operation and maintenance instructions for the following corrosion resistant FRP fans: • CNW • PRVS • DHK • AXCL • PVK M.K.
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Page 2: Vibration Isolators
Storage If the fan is stored for any length of time prior to installation, completely coat the bearings with grease or moisture inhibiting oil (refer to Lubricants on page 8). Rotate the wheel several revolutions every three to five days to keep a coating of grease on all internal bearing parts. - Page 3 Floor Mounted Rubber-In-Shear Isolators Mount fan on rail supports (if supplied). Elevate fan to provide room to insert isolators between the fan base and supports and block in position. Position isolators under fan and secure bolts. Remove blocks and allow fan to rest on the isolators. Isolators must be installed on a level surface (leveling should not be required).
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Page 4: Duct Installation
Install the spring hanger as shown in Fig. 4. Only after the fan is in it’s final operating weight should the spring be adjusted. To adjust the spring, turn the nut directly above the spring cup clockwise. This will compress the spring. When supporting the fan, not more than (3) complete turns should be made on the adjusting nut for each hanger at one time. -
Page 5: Pulley Alignment
Belt and Pulley Installation Belt tension is determined by the sound the belts make when the fan is first started. Belts will produce a loud squeal, which dissipates after the fan is operating at full capacity. If the belt tension is too tight or too loose, lost efficiency and possible damage can occur. -
Page 6: Wiring Installation
Wiring Installation All wiring should be in accordance with local ordinances and the National Electrical Code, NFPA 70. Ensure the power supply (voltage, frequency, and current carrying capacity of wires) are in accordance with the motor nameplate. Lock off all power sources before unit is wired to power source. Leave enough slack in the wiring to allow for motor movement when adjusting belt tension. -
Page 7: Final Installation Steps
Typical Damper Motor Schematic For 3 phase, damper motor voltage should be the same between L1 and L2. For single phase application, disregard L3. *Damper motors may be available in 115, 230 and 460 volt models. The damper motor nameplate voltage should be verified prior to connection. **A transformer may be provided in some installations to correct the damper motor voltage to the specified voltage. -
Page 8: Maintenance
Inspection Inspection of the fan should be conducted in the first 30 minutes, 8 hour and 24 hour intervals of satisfactory operation. During the inspections, stop the fan and inspect as per the Conditions Chart. 30 Minute Interval Inspect bolts, setscrews, and motor mounting bolts. Adjust and tighten as necessary. 8 Hour Interval Inspect belt alignment and tension. -
Page 9: Bearing Replacement
Changing Shaft Speed All belt driven fans with motors up to and including 5 hp (184T max.) are equipped with variable pitch motor pulleys. To change the fan speed, perform the following: Loosen setscrews on driver (motor) pulley and remove key, if equipped. Turn the pulley rim to open or close the groove facing. - Page 10 11. The outer ring of the bearing is spherical and swivels in the housing to compensate for misalignment. Secure hold down bolts, but do not fully tighten. 12. Align the setscrews on the bearings and tighten one setscrew on each bearing. 13.
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Page 11: Troubleshooting
Troubleshooting Problem and Potential Cause Low Capacity or Pressure • Incorrect direction of rotation. Make sure the fan rotates in same direction as the arrows on the motor or drive belt assembly. • Poor fan inlet conditions. There should be a straight clear duct at the inlet. •... -
Page 12: Parts List
Parts List Fig. 12 – Inline Fans (typical) Fig. 13 – Centrifugal Fans (typical)
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