Do you run your reefer when in a dock?

Coronado Kid

Cactus Patch
You pull for magnum they run reefers and they use . Lot of 387 and pay up ti .50 a mile
 

DubbleD

Color Commentator
Open the doors and all you are doing is sucking I. Warm air from the gap under the doors.

Why do you think you defrost so dang much sitting on the docks. All you are doing ng is icing up the evaporator causing it to go into defrost mode.
Doesn't matter.

The receiver can refuse a load half way through Unloading.
 

DubbleD

Color Commentator
All of you need to understand one thing....

You drive the truck. Period. End of story.

You're not paid to think past.... Do This.... Until.... you are told.... Don't do this.
 

8978

** Commie Express **
Supporter
Many of you know I've been around the world on a cruise ship many many times and have seen every exotic port. They ALL have a main street trying to sell you everything. It's HOT. I mean HOT HOT HOT. All the stores are pretty much the same. The front door is like sliding doors that when opened are about 15 feet wide. They leave them open all the time and the inside of the store is like a perfect 68 degrees. I have no idea how the cold stays inside but it does.

I remember being in Papua New Guinea. It was so hot I had trouble breathing. I made my way back to the ship by going from one store to the next.
 

Duck

My other car is a POS too
Supporter
Many of you know I've been around the world on a cruise ship many many times and have seen every exotic port. They ALL have a main street trying to sell you everything. It's HOT. I mean HOT HOT HOT. All the stores are pretty much the same. The front door is like sliding doors that when opened are about 15 feet wide. They leave them open all the time and the inside of the store is like a perfect 68 degrees. I have no idea how the cold stays inside but it does.

I remember being in Papua New Guinea. It was so hot I had trouble breathing. I made my way back to the ship by going from one store to the next.
They may have their doors open but I'm sure their air conditioning isn't ducted so it blows straight outside.
 

Kiwi303

Not a fruit
Air Curtains...


A air con outlet above the door pointing down the whole width of the door. You literally walk through a curtain of air.
 

Mike

Well-Known Member
Staff member
No reefer company that I pulled for, ever, wanted the units left on when unloading unless requested verbally or in writing by the customer.
 

Giggles

I only look innocent
if they have a ryan in there you are gonna show hot product... not to mention, what if you are in say phoenix and its 110* outside? you are at a dock where they unload you on the dry side (which it does happen) then they take it to the cold side...??? we never shut the reefer off unless specifically requested by the customer.
 

ironpony

Professional Pot-Stirrer
Supporter
The air chute across the ceiling carries the cold air to the rear, then it flows across the freight & gets sucked back into the unit down near the floor in front.

When in a dock, the refrigerated air is blown straight into the warehouse. Most loading areas are kept at temps in the 30's or 40's so if your set point is below that, you are using your reefer fuel to cool their warehouse while drawing in their warmer air across the freight in the trailer.
I always turn the reefer off in the dock unless they specifically request that I keep it running.

Dang right... the reefer air inlet is at the bottom front of the trailer, so leaving it running just pulls warm air into the trailer from the gap at the dock. The trailer is insulated and the load is already cold soaked, so its not going to warm up in any kind of hurry... leaving it off isn't the problem. Dragging all that warm air into the bottom of the trailer will do some damage to a load though; it'll melt the bottom layer of an ice cream load on a hot day.

I never give customers free refrigeration...
Its my fuel, and it ain't free.

Prime had those door switches on some of their trailers. The fuses had a bad habit of blowing at the absolute worst times and the unit wouldn't run at all. They ended up jumping the connections on most of them and bypassing the switches altogether.
They're past that now. The switches can be bypassed in software when necessary.
 

Injun

Rabid Squaw
Staff member
Supporter
I run multizone trailers with several drops on each load. It's a PITA enough to pull the few dairy pallets off the tail, move a few out of the way, raise the bulkhead doors, remove a few frozen pallets, close the frozen section back up, reload the dairy pallets that had to be moved and then shut the roll door.

The units run the entire time. There are three sections, the rear two have reefer units on the ceiling and do not pull air across the floor. They recirculate the air that's in that particular compartment.

Settings used are 32, -20, 32. Rear section might be 45 or so when I button it up, but by the time I've gotten my paperwork done and returned to the truck (five minutes), the temp in the rear section is around 38 and falling quickly.

Different application and different setup. Plus, that's how WalMart wants it done. Their trailer, their freight, their fuel, their stores and their DC. They can have what they want.

When I ran truckload OTR reefer freight, the trailer was precooled and shut off at the shipper. Trailer was off at the receiver. If either of them complained, I'd hand them the door switch explanation and tell them if they're concerned with their freight melting, maybe they need to get it off my trailer.
 

Duck

My other car is a POS too
Supporter
Trailer was off at the receiver. If either of them complained, I'd hand them the door switch explanation and tell them if they're concerned with their freight melting, maybe they need to get it off my trailer.
I've given them the "we don't provide free refrigeration for your warehouse" explanation before.

The dock personnel usually are low IQ types who don't understand that running the unit with the doors open actually WARMS the freight.

But guaranteed, someone in the bean counter office who knows how much it costs to refrigerate a big ass warehouse in the middle of summer, knows the real reason for telling the drivers to keep their units running while backed into the docks.
 

Rigjockey

In Gord we trust!
Supporter
My only reefer experience was with containers.
They sit in the hot sun all day, Doors closed. I picked one up and when they set it on the chassis I started the reefer ( or genset that powers the reefer)
They sent me to pick up ice cream. When I got there, There was 5 or 6 of our drivers sitting there in the parking lot.
I checked in and the guy says, Oh you need to go park over there with the rest of them until the reefer reaches temp.
I said it is at temp. He says well we will see about that. He came out, Looked and said holy ****! back in that dock.

****ing honestly? It never occurred to these other drivers to start the reefer before getting there?
Containers are paid by the can. Sitting in the parking lot is not helping with the can count.
 

GroceryHauler

Well-Known Member
I run the three-zone trailers. If there's a bulkhead up in the back I'll leave the reefer running. If there isn't, I shut off each zone as they unload. Once a bulkhead comes down, that zone is turned off and if they don't want the freight to thaw they can move faster.

I do have a couple of places where I like the people on the dock and I'll run the reefer for them so they can get a break from the hot warehouse.

When I first started pulling a reefer, I picked up a load of barbecue sauce in Garland, TX. The loader came out and turned my reefer on while he was loading it. I didn't think twice about it since a lot of places set our reefers when they load us. Turns out he just wanted to cool off while he was loading the trailer and I ended up freezing an entire load of barbecue sauce bringing it back to Illinois. Whoopsie.
 

Rigjockey

In Gord we trust!
Supporter
Opposite! i was delivering way up north in Canada. Cold as a Mother ****er. Can you leave the heater on says the girl at WalMart? No can do!
Walmart your employer only pays to heat the freight, Not you! i suggest you work fast!
 

Fredl

Well-Known Member
I switch them off. Except i know he will stay there during shift change.
We drop the Trailer on the Bay,so its then on the Shunter who is on Radio-Contact with Warehouse
 
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