Dual pressure switch for havc
Description
A dual pressure control from Grainger helps to protect commercial
refrigeration and air conditioning systems. Dual pressure controls
combine high-pressure compressor protection with low-pressure
cycling or safety functions. Some models offer a visible pressure
scale and can be adjusted through the range without removing the
cover. Manual reset models are trip-free.
Q830 series dual pressure controls can be not only used in
fluorinated refrigerant, but also in the air
and liquid (allowed liquid temp. -20 to 120°C)
Adjustable range and differential settings.
Renovated SPDT micro-switch ensures the reliable switch function.
Flexible mounting bracket suits various kids of application.
Upper lid is optional (IP44)
Various connections are available on request.
Automatic and manual reset version
The material of bellows is copper and pressure interface is brass.
CE approval
Specification
| Model | Low pressure(bar) | High pressure(bar) | Reset form(bar) | Factory setting(bar) |
| Pressure adjust range | Differential | Pressure adjust range | Differential | Low pressure | High pressure | Low pressure | High pressure |
| OFF | ON | OFF | ON |
| Q830 | -0.5~6 | -0.6~4 | 8~30 | 3~5(fixed) | Auto | Auto | 3 | 2 | 20 | 15 |
| Q830HM | -0.5~6 | -0.6~4 | 8~30 | ≤5 | Auto | Manual | 3 | 2 | 20 | Manual reset |
| Q830HLM | -0.5~6 | ≤1 | 8~30 | ≤5 | Manual | Manual | 3 | Manual | 20 | Manual reset |
Dimensions(mm)
Electric Wiring
Rated Amps(A) Rated Voltage(V) | Power Factory (Cosφ) | 125/250V AC |
| Non-Industry Current | 1 | 12 |
| Industry Current | Full Load | 0.75 | 12 |
| Locked Roter | 0.45 | 72 |
Connection & Installation
Mounting Plate
FAQ
1 Q: What's the delivery time?
A: According to the specification and quantity of your order,
generally 4
days for normal standard products within 10pcs.
2 Q:Are you manufacturer or trading company?
A: We are manufacturer with many years of experience.We have our
own factory.Welcome to visit our factory.
3 Q: Can we use our logo on the products?
A: Yes.We can provide OEM service.
4 Q: Do you have products with ex-proof certificate?
A: Yes,we can offer intrinsic-safety and flame proof certificates.
5 Q: What is the warranty of your products?
A: Normal is 12 months.
6 Q: What's the means of transport?
A: Express such as TNT,Fedex,DHL,UPS, or logistics by indicator.
