• PDM Type: Primary
• Unit of Measure: EA
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Terra’s Power Distribution Modules (PDMs) dramatically simplify connection of fan/filter modules (FFUs) and ceiling lights, while providing low-voltage power for one or more Control Panels
Each PDM accommodates up to 5 lights and 5 FFUs and must be wired to a dedicated 35A fused 120V circuit or a 30A fused 240V circuit. Select among four PDM types (see configuration chart below):
Ensuring the safety of your employees, customers, and products is essential. Terra's UL-listed PDM's and air filtering systems are manufactured to the highest standards to reduce the risk of damage, injuries, and electrical hazards such as electric shock and fires. UL (Underwriters Laboratories) is recognized around the world as the leader in product safety testing and certification. The UL listing helps meet municipal and other permitting requirements that may be required before a cleanroom can be approved for operation. It ensures safety and integrity of high voltage cleanroom electrical system, as evaluated by independent third-party UL.
If there’s chance that you may require additional FFUs to accommodate cleaner conditions, leave each PDM below its maximum FFU capacity. FFUs and lights can be added at any time, with no need for an electrician or hard-wiring, as long as the maximum of five of either module per PDM is not exceeded.
Terra cleanrooms are designed to meet a specified ISO cleanliness rating when a cleanroom is in use: with operations in progress, process machinery humming, and personnel in motion. So why pay to maintain that level of FFU performance when a production shift ends and people, the greatest source of contamination, leave the room?
With a greatly reduced contaminant load, a cleanroom at rest maintains its target ISO cleanliness standard with much less airflow, fewer air changes—and decreased power consumption. Terra’s Night Service Switch provides this cleanliness at a nominal cost, giving you immediate cost savings.
Simply select the “Night Service” Switch when you turn off the lights and go home. A separate operation circuit drops all Fan/Filter Units (FFUs) into low-energy operation mode, shaving 25% of energy costs off your power bill while maintaining uninterrupted cleanroom performance at your specified cleanliness level. With Terra's Night Service Switch, operators can save up to 7,000 kilowatt-hours per year with a return on investment in slightly over a year.*
A complete system includes fan/filter units and Terra's standard Power Distribution Modules (order separately), in addition to the units specified below. The Night Service Switch includes electronic configuration of each FFU controlled by this system. The Control Panel includes switch settings and indicator lights for Normal Mode and Night Service Mode, as well as a tamper-resistant master FFU Off switch.
| Operating Setting: | High Speed** | Medium Speed** | Night Service |
|---|---|---|---|
| Airflow: cfm (m^3/hr) | 808 (1373) | 717 (1218) | 654 (1111) |
| Air Speed: ft/m (m/s) | 115 (0.58) | 102 (0.51) | 93 (0.47) |
| Run Amps (Watts): | 4.3 (512) | 3.5 (416) | 3.3 (393W)* |
*25% savings over operation on high speed
**Based off of an average-sized cleanroom with 10 FFUs, active cleanroom usage of 8 hours per day, and the U.S. Energy Information Administration's given average retail price of electricity at 10.72 cents per kilowatt-hour.
On a tight schedule? Choose FasTrak 24/7 Priority Service to help meet your critical schedule for Terra-manufactured products, either before or after your order is placed.*
Call for pricing. FasTrak service fees cover costs of additional services only, without additional profit.
* Terra's FasTrak services limited guarantee: to ship on the ESD or date specified OR to refund up to 100% of FasTrak charges. This guarantee covers no direct, special, consequential or other damages and is strictly limited to up to 100% of the amount paid for FasTrak service. When a specified ship date is missed due to factors outside Terra's control (vendor performance, deliveries by shipping companies, etc.) and random factors such as accidents, the credit of up to 100% of the FasTrak 24/7 may not apply. FasTrak service requested after order placement will be quoted and accepted based on available time remaining before required ship date.
