There is no substitute for quality, if you use cheap, unbranded detergent and rinse aid, be prepared for problems such as staining, streaks and water spots on glasses or dishes. Most cheap chemicals are just watered down to make them, erm, cheap. Do not skimp on chemicals and avoid Cash and Carry own-brands.
Ware washers need water heated to around 50c for wash water (the water you can see in the tank when the door is open) and around 85c for rinse water. Much below those temperatures means you run the risk of having poor wash results or not killing the bacteria that lives on dirty dishes and glasses.
Missing wash and rinse jets cause major problems for the following reasons: As well as directing pressurised hot water onto your wash ware, they are also the driving force behind rotating wash and rinse arms within the cabinet. A bit like an airliner - lose a jet engine, lose loads of power. Ensure they are all in place, clear of debris and fitted properly.
Ever wondered what those funny shaped bits of plastic that get regularly blocked-up with debris are for? Always try keeping filters clean because water gets sucked through them at high speed, and if they are blocked, water pressure is affected, and you end up with poor results. Again.
Every time your ware washer finishes a shift, pull the drain plug out, empty the cabinet, and LEAVE THE DOOR OPEN until you use the machine again. This prevents the warm, moist atmosphere in the cabinet getting covered in algae, mould, and smelly bacterial deposits. Let it breathe.
Most cabinet ware washers have square baskets of circa 350mm, 400mm or 500mm. Manufacturers specify how many glasses or plates will fit their particular machines, so make sure you buy the model that fits your operational needs.
Ware washers heat up a lot of water. Most utilise a 240v mains power supply. The lower the amperage the machine is, the longer it will take to heat water. So, when the machine is busy, sometimes it may only have a couple of minutes between washes to recover. Is a cheap 13amp machine enough for your business?
A gravity drain machine means when you pull out the drain plug, the water in the cabinet will drain away of its own accord. If the drain in your premises is above the level of the machine waste however, water isn't going to drain up hill, so you'll need either a stand to raise the level of the waste outlet, or an internal drain pump.
Wash cycle times are important. Make sure Glasswashers and Dishwashers have a dual timer fitted. Between 2 and 4 minutes is fine for both, but you'll also need a long-wash or continuous cycle on a Dishwasher.
Ware washers need 2 chemicals to do their job properly: detergent and rinse aid. That means that unless you have a wall-mounted, external chemical injection system, your machine will need 2 on-board chemical pumps. Check to make sure that they are included as standard.
If you buy online, be prepared to get your credit card out if your machine goes wrong. Online suppliers make a big thing of warranties, but once you've parted with your money beware, because many insist on an up-front payment when you claim. Some may think this is a rip-off, and in most cases, they'd be right.